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e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 e t r o n t e c h n o l o g y , i n c . 1 f , n o . 1 , p r o s p e r i t y r d . 1 , s c i e n c e - b a s e d i n d u s t r i a l p a r k , h s i n c h u , t a i w a n , r . o . c . t e l : ( 8 8 6 ) - 3 - 5 7 8 2 3 4 5 f a x : ( 8 8 6 ) - 3 - 5 7 7 9 0 0 1 e t r o n t e c h n o l o g y , i n c . r e s e r v e s t h e r i g h t t o m a k e c h a n g e s t o i t s p r o d u c t s a n d s p e c i f i c a t i o n s a p r i l 1 9 9 7 w i t h o u t n o t i c e . 2 5 6 k x 1 6 h i g h s p e e d e d o d r a m p r e l i m i n a r y f e a t u r e s f a s t a c c e s s t i m e : 3 0 / 3 5 / 4 0 / 4 5 n s f a s t e d o p a g e c y c l e t i m e : 1 3 . 3 / 1 5 / 1 6 / 1 8 n s e d o p a g e m o d e o p e r a t i o n s i n g l e + 5 v ? 1 0 % p o w e r s u p p l y l o w p o w e r d i s s i p a t i o n i n d i v i d u a l b y t e c o n t r o l v i a d u a l cas i n p u t s t h r e e r e f r e s h m o d e s 5 1 2 - c y c l e r e f r e s h i n 8 m s ( 9 r o w s a n d 9 c o l u m n s ) t t l c o m p a t i b l e 4 0 - p i n , 4 0 0 - m i l p l a s t i c s o j p a c k a g e , o r 4 0 / 4 4 - p i n , 4 0 0 - m i l p l a s t i c t s o p - i i p a c k a g e . o r d e r i n g i n f o r m a t i o n p a r t n u m b e r s p e e d p a c k a g e e m 6 1 4 1 6 3 a - 3 0 3 0 n s s o j e m 6 1 4 1 6 3 t s - 3 0 3 0 n s t s o p - i i e m 6 1 4 1 6 3 a - 3 5 3 5 n s s o j e m 6 1 4 1 6 3 t s - 3 5 3 5 n s t s o p - i i e m 6 1 4 1 6 3 a - 4 0 4 0 n s s o j e m 6 1 4 1 6 3 t s - 4 0 4 0 n s t s o p - i i e m 6 1 4 1 6 3 a - 4 5 4 5 n s s o j e m 6 1 4 1 6 3 t s - 4 5 4 5 n s t s o p - i i k e y s p e c i f i c a t i o n s s p e e d t r a c t c a c t a a t o e a t r c t p c - 3 0 3 0 n s 9 n s 1 6 n s 9 n s 5 3 n s 1 3 . 3 n s - 3 5 3 5 n s 1 0 n s 1 8 n s 9 n s 6 0 n s 1 5 n s - 4 0 4 0 n s 1 1 n s 2 0 n s 1 0 n s 6 6 n s 1 6 n s - 4 5 4 5 n s 1 2 n s 2 2 n s 1 0 n s 7 5 n s 1 8 n s o v e r v i e w p i n a s s i g n m e n t ( t o p v i e w ) 4 0 - p i n s o j 4 0 / 4 4 - p i n t s o p - i i vcc i / o 0 i / o 1 i / o 2 i / o 3 vcc i / o 4 i / o 5 i / o 6 i / o 7 n c n c w e ras n c a 0 a 1 a 2 a 3 vcc v s s i / o 1 5 i / o 1 4 i / o 1 3 i / o 1 2 v s s i / o 1 1 i / o 1 0 i / o 9 i / o 8 n c lc as ucas o e a 8 a 7 a 6 a 5 a 4 v s s 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 4 0 3 9 3 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 2 4 2 3 2 2 2 1 vcc i / o 0 i / o 1 i / o 2 i / o 3 vcc i / o 4 i / o 5 i / o 6 i / o 7 n c n c w e ras n c a 0 a 1 a 2 a 3 vcc v s s i / o 1 5 i / o 1 4 i / o 1 3 i / o 1 2 v s s i / o 1 1 i / o 1 0 i / o 9 i / o 8 n c lc as ucas o e a 8 a 7 a 6 a 5 a 4 v s s 1 2 3 4 5 6 7 8 9 1 0 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 3 6 3 5 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 2 4 2 3 p i n n a m e s a 0 - a 8 a d d r e s s i n p u t s ras r o w a d d r e s s s t r o b e ucas c o l u m n a d d r e s s s t r o b e ( u p p e r b y t e c o n t r o l ) lcas c o l u m n a d d r e s s s t r o b e ( l o w e r b y t e c o n t r o l ) we w r i t e e n a b l e oe o u t p u t e n a b l e i / o 0 - i / o 1 5 d a t a i n p u t / o u t p u t v c c + 5 v p o w e r s u p p l y v s s g r o u n d n c n o c o n n e c t i o n t h e e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 i s a h i g h s p e e d e d o ( e x t e n d e d d a t a o u t p u t ) d r a m o r g a n i z e d i n 2 6 2 , 1 4 4 w o r d s b y 1 6 b i t s . i t s u p p o r t s e d o p a g e m o d e a n d 1 6 - b i t d a t a w i d t h f o r h i g h d a t a b a n d w i d t h a p p l i c a t i o n s . t h e e d o p a g e m o d e i s a n a c c e l e r a t e d a c c e s s t h a t p r o v i d e s a s h o r t e r p a g e c y c l e a n d a f a s t e r d a t a a c c e s s t i m e t h a n t h e t r a d i t i o n a l f a s t p a g e m o d e . c o m p a r e d w i t h f a s t p a g e m o d e d r a m , t h e e d o d r a m d a t a o u t p u t w i l l b e h e l d v a l i d a f t e r cas g o e s h i g h , a s l o n g a s ras a n d oe a r e h e l d l o w a n d we i s h e l d h i g h . t h i s f e a t u r e a l l o w s cas p r e c h a r g e t i m e t o o c c u r w i t h o u t t h e o u t p u t d a t a g o i n g i n v a l i d . t h e r e f o r e , t h e e d o cas t i m i n g c a n b e c o n d e n s e d t o c a r r y m o r e d a t a o u t i n a g i v e n p e r i o d . t h e e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 f u l l y u t i l i z e s t h e e d o p a g e m o d e a d v a n t a g e s . i t a l l o w s 5 1 2 r a n d o m a c c e s s w i t h i n a p a g e w i t h a f a s t c y c l e t i m e a s s h o r t a s 1 3 . 3 / 1 5 / 1 6 / 1 8 n s . t h e e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 i s i d e a l l y s u i t a b l e f o r h i g h p e r f o r m a n c e g r a p h i c s f r a m e b u f f e r s , c d - r o m s , d i s k d r i v e r s , s e t t o p b o x e s , a n d d s p a p p l i c a t i o n s .
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 2 a p r i l 1 9 9 7 b l o c k d i a g r a m clock ge nerator circuit lower data-in buf fer lower data-out buf fer upper data-in buf fer upper data-out buf fer memo ry cell sense amplifier & i/o control column decoder ra s lcas uc as we a 0 a 1 a 2 a 3 a 4 a 5 a 6 a 7 a 8 row & column addr ess bu ffer row decoder a0 - a8 a 0 a 8 vcc (5 v) x 3 vss (0 v) x 3 do0 do1 do7 do8 do9 do15 o e ou tp ut enable in pu t lower data in pu t s/ ou t pu ts uppe r data in pu t s/ ou t pu ts lower upper . .. .. .. .. . . .. .. .. .. . . .. .. .. .. . . .. .. .. .. . . .. .. .. .. . . .. .. .. .. .
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 3 a p r i l 1 9 9 7 a b s o l u t e m a x i m u m r a t i n g s p a r a m e t e r s y m b o l v a l u e u n i t v o l t a g e o n a n y p i n r e l a t i v e t o v s s v t - 0 . 5 t o + 7 . 0 v s u p p l y v o l t a g e r e l a t i v e t o v s s v c c - 0 . 5 t o + 7 . 0 v s h o r t c i r c u i t o u t p u t c u r r e n t i o u t 5 0 m a p o w e r d i s s i p a t i o n p t 1 . 0 w o p e r a t i n g t e m p e r a t u r e t o p t 0 t o + 7 0 c s t o r a g e t e m p e r a t u r e t s t g - 5 5 t o + 1 2 5 c c a p a c i t a n c e ( t a = 2 5 c ; v c c = 5 v ? 1 0 % ; f = 1 m h z ) p a r a m e t e r s y m b o l t y p . m a x . u n i t n o t e i n p u t c a p a c i t a n c e ( a 0 - a 8 ) c i 1 ?e 5 p f 1 i n p u t c a p a c i t a n c e ( ras , ucas , lcas , we , oe ) c i 2 ?e 5 p f 1 o u t p u t c a p a c i t a n c e ( i / o 0 - i / o 1 5 ) c i / o ?e 7 p f 1 n o t e s : 1 . c a p a c i t a n c e i s s a m p l e d a n d n o t 1 0 0 % t e s t e d . t r u t h t a b l e a d d r e s s e s f u n c t i o n ras lcas ucas we oe t r t c d q s n o t e s s t a n d b y h h ? x h ? x x x x x h i g h - z r e a d : w o r d l l l h l r o w c o l d a t a - o u t r e a d : l o w e r b y t e l l h h l r o w c o l l o w e r b y t e , d a t a - o u t u p p e r b y t e , h i g h - z r e a d : u p p e r b y t e l h l h l r o w c o l l o w e r b y t e , h i g h - z u p p e r b y t e , d a t a - o u t w r i t e : w o r d ( e a r l y w r i t e ) l l l l x r o w c o l d a t a - i n w r i t e : l o w e r b y t e ( e a r l y ) l l h l x r o w c o l l o w e r b y t e , d a t a - i n u p p e r b y t e , h i g h - z w r i t e : u p p e r b y t e ( e a r l y ) l h l l x r o w c o l l o w e r b y t e , h i g h - z u p p e r b y t e , d a t a - i n r e a d w r i t e l l l h ? l l ? h r o w c o l d a t a - o u t , d a t a - i n 1 , 2 e d o - p a g e - 1 s t c y c l e l h ? l h ? l h l r o w c o l d a t a - o u t 2 m o d e r e a d 2 n d c y c l e l h ? l h ? l h l n / a c o l d a t a - o u t 2 e d o - p a g e - 1 s t c y c l e l h ? l h ? l l x r o w c o l d a t a - i n 1 m o d e w r i t e 2 n d c y c l e l h ? l h ? l l x n / a c o l d a t a - i n 1 e d o - 1 s t c y c l e l h ? l h ? l h ? l l ? h r o w c o l d a t a - o u t , d a t a - i n 1 , 2 p a g e - m o d e r e a d - w r i t e 2 n d c y c l e l h ? l h ? l h ? l l ? h n / a c o l d a t a - o u t , d a t a - i n 1 , 2 h i d d e n r e a d l ? h ? l l l h l r o w c o l d a t a - o u t 2 r e f r e s h w r i t e l ? h ? l l l l x r o w c o l d a t a - i n 1 , 3 r a s # o n l y r e f r e s h l h h x x r o w n / a h i g h - z c b r r e f r e s h h ? l l l x x x x h i g h - z 4 n o t e s : 1 . t h e s e w r i t e c y c l e s m a y a l s o b e b y t e w r i t e c y c l e s ( e i t h e r lcas o r ucas a c t i v e ) . 2 . t h e s e r e a d c y c l e s m a y a l s o b e b y t e r e a d c y c l e s ( e i t h e r lcas o r ucas a c t i v e ) . 3 . e a r l y w r i t e o n l y .
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 4 a p r i l 1 9 9 7 4 . a t l e a s t o n e o f t h e t w o cas s i g n a l s m u s t b e a c t i v e ( lcas o r ucas ) .
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 5 a p r i l 1 9 9 7 r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s p a r a m e t e r s y m b o l m i n t y p m a x u n i t n o t e s s u p p l y v o l t a g e v s s 0 0 0 v 2 v c c 4 . 5 5 . 0 5 . 5 v 1 , 2 i n p u t h i g h v o l t a g e v i h 2 . 4 ?e v c c + 0 . 3 v 1 i n p u t l o w v o l t a g e v i l - 0 . 5 ?e 0 . 8 v 1 , 3 n o t e s : 1 . a l l v o l t a g e r e f e r e n c e d t o v s s . 2 . t h e s u p p l y v o l t a g e w i t h a l l v c c p i n s m u s t b e t h e s a m e l e v e l . t h e s u p p l y v o l t a g e w i t h a l l v s s p i n s m u s t b e t h e s a m e l e v e l . 3 . v i l ( m i n . ) = - 1 . 2 v f o r p u l s e w i d t h ?? 3 0 n s . d c c h a r a c t e r i s t i c s t a = 0 t o + 7 0 c ; v c c = + 5 v 1 0 % , v s s = 0 v e m 6 1 4 1 6 3 a p a r a m e t e r s y m b o l t e s t c o n d i t i o n s - 3 0 / 3 5 / 4 0 / 4 5 u n i t n o t e s m i n m a x o p e r a t i n g c u r r e n t i c c 1 ras c y c l i n g lcas , ucas c y c l i n g t r c = m i n . ?e 2 8 0 / 2 5 0 / 2 2 5 / 2 0 0 m a 1 , 2 s t a n d b y c u r r e n t i c c 2 ras , lcas , ucas = v i h d o u t = h i g h - z ?e 2 m a ras , lcas , ucas , oe = v c c - 0 . 2 v d o u t = h i g h - z ?e 1 m a ras - o n l y r e f r e s h c u r r e n t i c c 3 ras c y c l i n g , cas = v i h t r c = m i n . ?e 2 8 0 / 2 5 0 / 2 2 5 / 2 0 0 m a 2 s t a n d b y c u r r e n t i c c 5 r a s = v i h lcas , ucas = v i l d o u t = e n a b l e ?e 5 m a 1 cas - b e f o r e - ras r e f r e s h c u r r e n t i c c 6 t r c = m i n . ras , cas c y c l i n g ?e 2 8 0 / 2 5 0 / 2 2 5 / 2 0 0 m a f a s t p a g e m o d e c u r r e n t i c c 7 t p c = m i n . ?e 2 8 0 / 2 5 0 / 2 2 5 / 2 0 0 m a 1 , 3 i n p u t l e a k a g e c u r r e n t i l i 0 v ?? v i n ?? v c c - 1 0 1 0 m a o u t p u t l e a k a g e c u r r e n t i l o 0 v ?? v o u t ?? v c c d o u t = d i s a b l e - 1 0 1 0 m a o u t p u t h i g h v o l t a g e v o h i o h = - 2 . 5 m a 2 . 4 v o u t p u t l o w v o l t a g e v o l i o l = + 2 . 1 m a 0 . 4 v n o t e s : 1 . i c c d e p e n d s o n o u t p u t l o a d c o n d i t i o n w h e n t h e d e v i c e i s s e l e c t e d . i c c - m a x i s s p e c i f i e d a t t h e o u t p u t o p e n c o n d i t i o n . 2 . a d d r e s s c a n b e c h a n g e d o n c e o r l e s s w h i l e ras = v i l . 3 . a d d r e s s c a n b e c h a n g e d o n c e o r l e s s w h i l e lcas a n d ucas = v i l . 4 . a l l t h e v c c p i n s s h a l l b e s u p p l i e d w i t h t h e s a m e v o l t a g e . a n d a l l t h e v s s p i n s s h a l l b e s u p p l i e d w i t h t h e s a m e v o l t a g e .
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 6 a p r i l 1 9 9 7 a c c h a r a c t e r i s t i c s ( 2 , 3 , 4 , 5 ) ( t a = 0 t o + 7 0 c ; v c c = 5 v ? 1 0 % , v s s = 0 v ) t e s t c o n d i t i o n s i n p u t r i s e a n d f a l l t i m e s : 2 n s o u t p u t l o a d : 1 t t l l o a d s a n d 5 0 p f a c t e s t c o n d i t i o n , i n p u t p u l s e l e v e l s 0 v t o 3 v o u t p u t t i m i n g r e f e r e n c e l e v e l s : v o h = 2 . 0 v v o l = 0 . 8 v r e a d , w r i t e , r e a d - m o d i f y - w r i t e a n d r e f r e s h c y c l e s ( c o m m o n p a r a m e t e r s ) e m 6 1 4 1 6 3 a p a r a m e t e r s y m b o l - 3 0 / 3 5 / 4 0 / 4 5 u n i t n o t e s m i n m a x r a n d o m r e a d o r w r i t e c y c l e t i m e t r c 5 3 / 6 0 / 6 6 / 7 5 ?e n s 1 ras p r e c h a r g e t i m e t r p 1 9 / 2 1 / 2 2 / 2 6 ?e n s ras p u l s e w i d t h t r a s 3 0 / 3 5 / 4 0 / 4 5 1 0 0 , 0 0 0 n s 6 u/lcas p u l s e w i d t h t c a s 5 / 6 / 7 / 8 1 0 0 , 0 0 0 n s 7 r o w a d d r e s s s e t u p t i m e t a s r 0 ?e n s r o w a d d r e s s h o l d t i m e t r a h 6 / 6 / 6 / 7 ?e n s c o l u m n a d d r e s s s e t u p t i m e t a s c 0 ?e n s 8 c o l u m n a d d r e s s h o l d t i m e t c a h 5 / 6 / 6 / 7 ?e n s 8 ras t o u/lcas d e l a y t i m e t r c d 1 0 / 1 1 / 1 2 / 1 3 2 1 / 2 5 / 2 9 / 3 3 n s 9 ras t o c o l u m n a d d r e s s d e l a y t i m e t r a d 8 / 9 / 1 0 / 1 1 1 5 / 1 7 / 1 8 / 2 0 n s 1 0 c o l u m n a d d r e s s t o ras l e a d t i m e t r a l 1 6 / 1 8 / 2 0 / 2 2 ?e n s ras h o l d t i m e t r s h 6 / 7 / 7 / 8 ?e n s u/lcas h o l d t i m e t c s h 3 0 / 3 5 / 4 0 / 4 5 ?e n s c o l u m n a d d r e s s h o l d t i m e f r o m ras t a r 2 2 / 2 5 / 3 0 / 3 5 ?e n s w r i t e c o m m a n d t i m e f r o m ras t w c r 2 2 / 2 5 / 3 0 / 3 5 ?e n s d a t a - i n h o l d t i m e f r o m ras t d h r 2 2 / 2 5 / 3 0 / 3 5 ?e n s u/lcas t o ras p r e c h a r g e t i m e t c r p 5 / 5 / 5 / 5 ?e n s 1 1 oe t o d a t a - i n d e l a y t i m e t o e d 7 / 7 / 8 / 8 ?e n s t r a n s i t i o n t i m e ( r i s e a n d f a l l ) t t 1 5 0 n s 1 2 r e f r e s h p e r i o d t r e f ?e 8 m s cas t o o u t p u t i n l o w - z t c l z 0 n s
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 7 a p r i l 1 9 9 7 r e a d c y c l e e m 6 1 4 1 6 3 a p a r a m e t e r s y m b o l - 3 0 / 3 5 / 4 0 / 4 5 u n i t n o t e s m i n m a x a c c e s s t i m e f r o m ras t r a c ?e 3 0 / 3 5 / 4 0 / 4 5 n s 1 3 a c c e s s t i m e f r o m u/lcas t c a c ?e 9 / 1 0 / 1 1 / 1 2 n s 1 4 , 1 5 , 1 6 a c c e s s t i m e f r o m c o l u m n a d d r e s s t a a ?e 1 6 / 1 8 / 2 0 / 2 2 n s 1 5 , 1 7 a c c e s s t i m e f r o m oe t o e a ?e 9 / 9 / 1 0 / 1 0 n s r e a d c o m m a n d s e t u p t i m e t r c s 0 ?e n s 8 r e a d c o m m a n d h o l d t i m e t o u/lcas t r c h 0 ?e n s 1 1 , 1 8 r e a d c o m m a n d h o l d t i m e t o ras t r r h 0 ?e n s 1 8 o u t p u t b u f f e r t u r n - o f f t i m e t o f f 0 6 / 7 / 8 / 8 n s 1 9 o u t p u t b u f f e r t u r n - o f f oe t o e z 0 6 / 7 / 8 / 8 n s 1 9 w r i t e c y c l e w r i t e c o m m a n d s e t u p t i m e t w c s 0 ?e n s 8 , 2 0 w r i t e c o m m a n d h o l d t i m e t w c h 5 / 6 / 6 / 6 ?e n s 8 w r i t e c o m m a n d p u l s e w i d t h t w p 5 / 6 / 6 / 6 ?e n s w r i t e c o m m a n d t o ras l e a d t i m e t r w l 1 0 ?e n s w r i t e c o m m a n d t o u/lcas l e a d t i m e t c w l 5 / 5 / 6 / 6 ?e n s 2 1 d a t a - i n s e t u p t i m e t d s 0 ?e n s 2 2 d a t a - i n h o l d t i m e t d h 5 / 6 / 6 / 7 ?e n s 2 2 oe h o l d t i m e f r o m we t o e h 5 / 6 / 6 / 6 ?e n s r e a d - m o d i f y - w r i t e c y c l e e m 6 1 4 1 6 3 a p a r a m e t e r s y m b o l - 3 0 / 3 5 / 4 0 / 4 5 u n i t n o t e s m i n m a x r e a d - m o d i f y - w r i t e c y c l e t i m e t r w c 7 3 / 8 3 / 9 0 / 1 0 0 ?e n s 1 ras t o we d e l a y t i m e t r w d 4 1 / 4 9 / 5 4 / 6 0 ?e n s 2 0 u/lcas t o we d e l a y t i m e t c w d 2 0 / 2 4 / 2 5 / 2 7 ?e n s 2 0 c o l u m n a d d r e s s t o we d e l a y t i m e t a w d 3 3 / 4 0 / 4 4 / 4 9 ?e n s 2 0 r e f r e s h c y c l e u/lcas s e t u p t i m e ( cas - b e f o r e - ras r e f r e s h c y c l e ) t c s r 6 / 7 / 8 / 9 ?e n s 8 u/lcas h o l d t i m e ( cas - b e f o r e - ras r e f r e s h c y c l e ) t c h r 7 / 8 / 9 / 1 0 ?e n s 1 1 ras p r e c h a r g e t o u/lcas h o l d t i m e t r p c 5 ?e n s 8 u/lcas p r e c h a r g e t i m e i n n o r m a l m o d e t c p n 5 / 5 / 5 / 6 ?e n s 2 3
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 8 a p r i l 1 9 9 7 e d o p a g e m o d e c y c l e e m 6 1 4 1 6 3 a p a r a m e t e r s y m b o l - 3 0 / 3 5 / 4 0 / 4 5 u n i t n o t e s m i n m a x e d o p a g e m o d e c y c l e t i m e t p c 1 3 . 3 / 1 5 / 1 6 / 1 8 ?e n s 2 5 e d o p a g e m o d e u/lcas p r e c h a r g e t i m e t c p 5 / 5 / 5 / 6 ?e n s 2 3 e d o p a g e m o d e ras p u l s e w i d t h t r a s p 3 0 / 3 5 / 4 0 / 4 5 1 0 0 , 0 0 0 n s 2 4 a c c e s s t i m e f r o m u/lcas p r e c h a r g e t c p a ?e 1 8 / 2 1 / 2 3 / 2 5 n s 1 1 , 1 5 ras h o l d t i m e f r o m u/lcas p r e c h a r g e t c p r h 1 3 / 1 4 / 1 5 / 1 6 ?e n s e d o p a g e m o d e r e a d - m o d i f y - w r i t e c y c l e u/lcas p r e c h a r g e t o we d e l a y t i m e t c p w 2 7 / 3 1 / 3 6 / 4 1 ?e n s 1 1 e d o p a g e m o d e r e a d - m o d i f y - w r i t e c y c l e t i m e t p r w c 3 5 / 4 0 / 4 5 / 5 0 ?e n s oe l o w t o cas h i g h s e t u p t i m e t o e s 5 ?e n s oe h i g h h o l d t i m e f r o m cas h i g h t o e h c 6 ?e n s oe h i g h p u l s e w i d t h t o e p 6 ?e n s oe s e t u p p r i o r t o ras d u r i n g h i d d e n r e f r e s h c y c l e t o r d 0 ?e n s d a t a o u t p u t h o l d a f t e r cas l o w t c o h 3 / 3 / 3 / 5 ?e n s o u t p u t d i s a b l e d e l a y f r o m we t w h z 0 1 3 n s we p u l s e w i d t h f o r o u t p u t d i s a b l e w h e n cas h i g h t w p z 6 ?e n s c o u n t e r t e s t c y c l e u/lcas p r e c h a r g e t i m e i n c o u n t e r t e s t c y c l e t c p t 3 0 ?e n s 2 3
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 9 a p r i l 1 9 9 7 n o t e s : 1 . a s s u m e t t = 2 n s . 2 . a n i n i t i a l p a u s e o f 1 0 0 u s i s r e q u i r e d a f t e r p o w e r u p f o l l o w e d b y a m i n i m u m o f e i g h t i n i t i a l i z a t i o n c y c l e s ( ras - o n l y r e f r e s h c y c l e o r cas - b e o f r e - ras r e f r e s h c y c l e ) . i f t h e i n t e r n a l r e f r e s h c o u n t e r i s u s e d , a m i n i m u m o f e i g h t cas - b e f o r e - ras r e f r e s h c y c l e s a r e r e q u i r e d . 3 . i n d e l a y e d w r i t e o r r e a d - m o d i f y - w r i t e c y c l e s , oe m u s t d i s a b l e o u t p u t b u f f e r p r i o r t o a p p l y i n g d a t a t o t h e d e v i c e . 4 . w h e n b o t h lcas a n d ucas g o l o w a t t h e s a m e t i m e , a l l 1 6 - b i t s d a t a a r e w r i t t e n i n t o t h e d e v i c e . lcas a n d ucas c a n n o t b e s t r a g g e r e d w i t h i n t h e s a m e w r i t e / r e a d c y c l e s . 5 . a l l t h e v c c a n d a l l t h e v s s p i n s s h a l l b e s u p p l i e d w i t h t h e s a m e v o l t a g e s . 6 . t r a s ( m i n ) = t r w d ( m i n ) + t r w l ( m i n ) + t t i n r e a d - m o d i f y - w r i t e c y c l e . 7 . t c a s ( m i n ) = t c w d ( m i n ) + t c w l ( m i n ) + t t i n r e a d - m o d i f y - w r i t e c y c l e . 8 . t a s c , t c a h , t r c s , t c s r , t w c s , t w c h , a n d t r p c a r e d e t e r m i n e d b y t h e e a r l i e r f a l l i n g e d g e o f ucas o r lcas . 9 . o p e r a t i o n w i t h t h e t r c d ( m a x ) l i m i t i n s u r e s t h a t t r a c ( m a x ) c a n b e m e t . t r c d ( m a x ) i s s p e c i f i e d a s a r e f e r e n c e p o i n t o n l y : i f t r c d i s g r e a t e r t h a n t h e s p e c i f i e d t r c d ( m a x ) l i m i t , t h e n a c c e s s t i m e i s c o n t r o l l e d e x c l u s i v e l y b y t c a c . 1 0 . o p e r a t i o n w i t h t h e t r a d ( m a x ) l i m i t i n s u r e s t h a t t r a c ( m a x ) c a n b e m e t . t r a d ( m a x ) i s s p e c i f i e d a s a r e f e r e n c e p o i n t o n l y : i f t r a d i s g r e a t e r t h a n t h e s p e c i f i e d t r a d ( m a x ) l i m i t , t h e n a c c e s s t i m e i s c o n t r o l l e d e x c l u s i v e l y b y t a a . 1 1 . t c r p , t c h r , t r c h , t c p a a n d t c p w a r e d e t e r m i n e d b y t h e l a t e r r i s i n g e d g e o f ucas o r lcas . 1 2 . v i h ( m i n ) a n d v i l ( m a x ) a r e r e f e r e n c e l e v e l s f o r m e a s u r i n g t i m i n g o f i n p u t s i g n a l s . a l s o , t r a n s i t i o n t i m e s a r e m e a s u r e d b e t w e e n v i h a n d v i l . 1 3 . a s s u m e s t h a t t r c d ?? t r c d ( m a x ) a n d t r a d ?? t r a d ( m a x ) . i f t r c d o r t r a d i s g r e a t e r t h a n t h e m a x i m u m r e c o m m e n d e d v a l u e s h o w n i n t h i s t a b l e , t r a c e x c e e d s t h e v a l u e s h o w n . 1 4 . a s s u m e s t h a t t r c d ?? t r c d ( m a x ) a n d t r a d ?? t r a d ( m a x ) . 1 5 . a c c e s s t i m e i s d e t e r m i n e d b y t h e l o n g e r o f t a a o r t c a c o r t c p a . 1 6 . t c a c i s g u a r a n t e e d f o r o n e t t l a n d 5 0 p f l o a d . 1 7 . a s s u m e s t h a t t r c d ?? t r c d ( m a x ) a n d t r a d ?? t r a d ( m a x ) . 1 8 . e i t h e r t r c h o r t r r h m u s t b e s a t i s f i e d f o r a r e a d c y c l e . 1 9 . t o f f ( m a x ) a n d t o e z ( m a x ) d e f i n e t h e t i m e a t w h i c h t h e o u t p u t a c h i e v e s t h e o p e n c i r c u i t c o n d i t i o n a n d i s n o t r e f e r e n c e d t o o u t p u t v o l t a g e l e v e l s . t h e t o f f i s d e t e r m i n e d b y t h e l a t e r r i s i n g e d g e o f ras o r cas . 2 0 . t w c s , t r w d , t c w d , a n d t a w d a r e n o t r e s t r i c t i v e o p e r a t i n g p a r a m e t e r s . t h e y a r e i n c l u d e d i n t h e d a t a s h e e t a s e l e c t r i c a l c h a r a c t e r i s t i c s o n l y ; i f t w c s ? t w c s ( m i n ) , t h e c y c l e i s a n e a r l y w r i t e c y c l e a n d t h e d a t a o u t p i n w i l l r e m a i n o p e n c i r c u i t ( h i g h i m p e d a n c e ) t h r o u g h o u t t h e e n t i r e c y c l e ; i f t r w d ? t r w d ( m i n ) , t c w d ? t c w d ( m i n ) , t a w d ? t a w d ( m i n ) a n d t c p w ? t c p w ( m i n ) , t h e c y c l e i s a r e a d - m o d i f y - w r i t e a n d t h e d a t a o u t p u t w i l l c o n t a i n d a t a r e a d f r o m t h e s e l e c t e d c e l l ; i f n e i t h e r o f t h e a b o v e s e t s o f c o n d i t i o n s i s s a t i s f i e d , t h e c o n d i t i o n o f t h e d a t a o u t ( a t a c c e s s t i m e ) i s i n d e t e r m i n a t e . 2 1 . t c w l s h a l l b e s a t i s f i e d b y b o t h ucas , lcas . 2 2 . t h e s e p a r a m e t e r s a r e r e f e r e n c e d t o ucas o r lcas l e a d i n g e d g e i n a n e a r l y w r i t e c y c l e a n d t o we e d g e i n a d e l a y e d w r i t e o r a r e a d - m o d i f y - w r i t e c y c l e . 2 3 . t c p n , t c p , a n d t c p t a r e d e t e r m i n e d b y t h e t i m e t h a t b o t h ucas a n d lcas a r e h i g h . 2 4 . t r a s p d e f i n e s ras p u l s e w i d t h i n f a s t p a g e m o d e c y c l e s . 2 5 . a s s u m e t t = 2 n s .
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 0 a p r i l 1 9 9 7 rp t csh t crp t rcd t rsh t cas t t t rad t ral t asr t rah t cah t asc t rcs t rch t rrh t cdd t odd t t open oea t oez t aa t rac t off t d out timing waveforms ? read cycle rc t ras t ras ucas we dzc t d in dzo out d oe column row address cac t lcas
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 1 a p r i l 1 9 9 7 rp t csh t crp t rcd t rsh t cas t t t asr t rah t cah t asc t dh t ? early write cycle wcs t wch t rc t ras t ras ucas we ds t d in out d d in row column address open lcas
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 2 a p r i l 1 9 9 7 rcd t ? read-modify-write cycle rad t cwd t cac t aa t oez t rwc t ras t t t address ras ucas we d in out d oe rp t crp t cas t asr t rah t cah t asc t ds t dh t wp t rcs t cwl t rwl t d in dzc t odd t dzo t oeh t rac t awd t rwd t out dout row column open oea t lcas
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 3 a p r i l 1 9 9 7 rp t csh t rcd t rsh t cas t t t ? delayed write cycle rc t ras t crp t ras ucas asr t rah t cah t asc t we ds t dh t d in out d rcs t cwl t rwl t wp t dzc t d in odd t dzo t oeh t oe oez t address row column invalid dout open lcas
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 4 a p r i l 1 9 9 7 t rrh t asc t asr t rah t t cah t cah t ral t cah t cas t cp t cas t cp t pc t cas t rcd t csh t rp t cprh t rasp t ? edo page mode read cycle t cac t aa ou t valid d n rcs t rcs t rcs t rch t rch t rch t rad t rsh t crp t t t oez t off t t rac oed t oed t address ras we d in oe out d column n column 1 row asc asc open open open t oea t aa t off t oez t oea t cac t aa t cpa t off t oez t oea t cac dout 1 dout 2 dout n column 2 ucas lcas oehc t oep t t oes t coh
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 5 a p r i l 1 9 9 7 ? edo p age mo de ear ly wr ite cy cle din 1 din 2 din n column 1 column 2 column n row asc t asr t rah t asc t cah t cah t cah t t asc rsh t cas t cp t cas t cp t pc t cas t rcd t csh t crp t t t rp t rasp t wcs t wcs t wcs t wch t wch t wch t ds t ds t ds t dh t dh t dh t address ras ucas we d i n d o u t op en lcas
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 6 a p r i l 1 9 9 7 dout n oez t t oea t t t din 2 oez t dout 1 cprh t rp t rah t rcd t crp t rad t asr t rwl t ds t wp t ds t dh t ds t dh t din 1 din n t address rac t dout 2 oez t t cac aa t oeh t t oea cpa t d ou t rasp t prwc t cp t cp t cas t cas t cas t cah t cah t cah t asc t asc t asc t rcs t rcs t rcs t cwl t cwl t cwl t wp t wp t dh t oed t oeh t ras we d in oe aa t cac t cpw t awd t cwd t cpw t awd t cwd t cwd t awd t rwd t column n column 2 column 1 oed row cpa t ? edo p age mode read -modify-write cycle din n open open open oed t cac t aa oea t t oeh ucas lcas
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 7 a p r i l 1 9 9 7 csh t rcd t cas t t t rad t asr t rah t cah t asc t rcs t rch t rrh t whz t odd t t open oea t oez t aa t rac t d out read cycle with we controlled disable ras ucas we dzc t d in dzo out d oe column row address cac t lcas clz t
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 8 a p r i l 1 9 9 7 csh t rcd t cas t t t rad t asr t rah t cah t asc t rcs t rch t open oea t aa t rac t d out ? edo-page-mode read-early-write cycle ras ucas lcas we d in out d oe column row address cac t clz t cas t cp t column cah t as c t wcs t wch t ds t dh t d in whz t
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 1 9 a p r i l 1 9 9 7 t ras t rp t rpc t asr t rah t ras t rc t rc t rp t ras t rp t rp t cpn t csr t chr t cpn t rpc t csr t chr t crp t off address ? ras - onl y re fre sh c ycle t rc t crp t crp t t t off out d address ucas ras t t t rpc out d ucas ras row op en op en ? cas -bef ore -ra s r efr esh cyc le lc as lc as
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 2 0 a p r i l 1 9 9 7 t rsh t chr t crp t asr t rah t asc t cah t ral t rrh t rch t cdd t odd t oez t off t oea t aa t rac t cac valid d out ? hi dden r efresh cycle address ras ucas d i n o e t t t rc t rc t rc t rp t ras t ras t rp t ras t rp t rcd t rad t rcs t dzc t dzo d out row c o l u m n d o u t op en (r ea d) (r ef re sh ) (r ef re sh ) t cas w e lc as
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 2 1 a p r i l 1 9 9 7 open rp t ras t rp t rpc t t t csr t chr t cpt t rsh t crp t cas t cpn t asc t cah t wcs t wch t dzc t dh t ds t cdd t off t column din ? cas before ras refresh counter check cycle (write) ras ucas address we din oe dout lcas
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 2 2 a p r i l 1 9 9 7 o u t l i n e d r a w i n g 4 0 - p i n s o j e d y a2 a1 a l q e1 c b b1 s seating plane d 1 40 21 20 e he s y m b o l d i m e n s i o n i n i n c h d i m e n s i o n i n m m m i n n u m m a x m i n n u m m a x a ?e ?e 0 . 1 4 4 ?e ?e 3 . 6 6 a 1 0 . 0 2 5 ?e ?e 0 . 6 4 ?e ?e a 2 0 . 1 0 5 0 . 1 1 0 0 . 1 1 5 2 . 6 7 2 . 7 9 2 . 9 2 b 1 0 . 0 2 6 0 . 0 2 8 0 . 0 3 2 0 . 6 6 0 . 7 1 0 . 8 1 b 0 . 0 1 6 0 . 0 1 8 0 . 0 2 2 0 . 4 1 0 . 4 6 0 . 5 6 c 0 . 0 0 8 0 . 0 1 0 0 . 0 1 4 0 . 2 0 0 . 2 5 0 . 3 6 d ?e 1 . 0 2 5 1 . 0 3 5 ?e 2 6 . 0 4 2 6 . 2 9 e 0 . 3 9 5 0 . 4 0 0 0 . 4 0 5 1 0 . 0 3 1 0 . 1 6 1 0 . 2 9 e 0 . 0 4 4 0 . 0 5 0 0 . 0 5 6 1 . 1 2 1 . 2 1 . 4 2 e 1 0 . 3 4 8 0 . 3 6 8 0 . 3 8 8 8 . 8 4 9 . 3 5 9 . 8 6 h e 0 . 4 3 0 0 . 4 4 0 0 . 4 5 0 1 0 . 9 2 1 1 . 1 8 1 1 . 4 3 l 0 . 0 8 8 0 . 0 9 8 0 . 1 0 8 2 . 2 4 2 . 4 9 2 . 7 4 s ?e ?e 0 . 0 5 0 ?e ?e 1 . 2 7 y ?e ?e 0 . 0 0 4 ?e ?e 0 . 1 0 q 0 x ?e 1 0 x 0 x ?e 1 0 x n o t e s : 1 . d i m e n s i o n d m a x & s i n c l u d e m o l d f l a s h o r t i e b a r b u r r s . 2 . d i m e n s i o n b 1 d o e s n o t i n c l u d e d a m b a r p r o t r u s i o n / i n t r u s i o n . 3 . d i m e n s i o n d & e i n c l u d e m o l d m i s m a t c h a n d a r e d e t e r m i n e d a t t h e m o l d p a r t i n g l i n e . 4 . c o n t r o l l i n g d i m e n s i o n : i n c h 5 . g e n e r a l a p p e a r a n c e s p e c . s h o u l d b e b a s e d o n f i n a l v i s u a l i n s p e c t i o n s p e c .
e t r o n t e c h e m 6 1 4 1 6 3 a - 3 0 / 3 5 / 4 0 / 4 5 p r e l i m i n a r y 2 3 a p r i l 1 9 9 7 4 0 / 4 4 - p i n t s o p - i i y + + 4 4 1 d e h e 0. 2 54 q l l 1 s b e a 1 a 2 a l l 1 c s y m b o l d i m e n s i o n i n i n c h d i m e n s i o n i n m m m i n n u m m a x m i n n u m m a x a ?e ?e 0 . 0 4 7 ?e ?e 1 . 2 0 a 1 0 . 0 0 2 ?e ?e 0 . 0 5 ?e ?e a 2 0 . 0 3 7 0 . 0 3 9 0 . 0 4 1 0 . 9 5 1 . 0 0 1 . 0 5 b 0 . 0 1 0 0 . 0 1 4 0 . 0 1 8 0 . 2 5 0 . 3 5 0 . 4 5 c ?e 0 . 0 0 6 ?e ?e 0 . 1 5 ?e d 0 . 7 2 1 0 . 7 2 5 0 . 7 2 9 1 8 . 3 1 1 8 . 4 1 1 8 . 5 1 e 0 . 3 9 6 0 . 4 0 0 0 . 4 0 4 1 0 . 0 6 1 0 . 1 6 1 0 . 2 6 e ?e 0 . 0 3 1 ?e ?e 0 . 8 0 ?e h e 0 . 4 5 5 0 . 4 6 3 0 . 4 7 1 1 1 . 5 6 1 1 . 7 6 1 1 . 9 6 l 0 . 0 1 6 0 . 0 2 0 0 . 0 2 4 0 . 4 0 0 . 5 0 0 . 6 0 l 1 ?e 0 . 0 3 1 ?e ?e 0 . 8 0 ?e s ?e ?e 0 . 0 3 6 ?e ?e 0 . 9 3 y ?e ?e 0 . 0 0 4 ?e ?e 0 . 1 0 q 0 x ?e 5 x 0 x ?e 5 x n o t e s : 1 . d i m e n s i o n d & e d o n o t i n c l u d e i n t e r i e a d f l a s h . 2 . d i m e n s i o n b d o e s n o t i n c l u d e d a m b a r p r o t r u s i o n / i n t r u s i o n . 3 . d i m e n s i o n s i n c l u d e s e n d f l a s h . 4 . c o n t r o l l i n g d i m e n s i o n : m m

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