the 64-bit v r 4121 tm (pd30121) microprocessor is a member of necs v r series tm devices created for windows ? ce embedded consumer applications. designed around the mips ? risc architecture developed by mips technologies, the v r 4121 offers excellent power consumption and performance in a highly integrated, low-cost system on a chip. this microprocessor is the second nec device to use the ultra-low-power-consuming v r 4120 tm cpu core based on advanced 0.25-micron technology. the v r 4120 cpu has an optimized five-stage pipeline, 16-kb instruction cache, 8-kb data cache, multiply-accumulate (mac) unit, and memory management unit that enable high performance in a compact, low-cost chip. integrated peripherals include a power management unit, direct memory access unit, interrupt control unit, timers, real-time clock, 16550-compatible serial interface, irda ? interface, keyboard interface, touch-panel interface, host signal processing unit (software modem), and a/d and d/a converters. the v r 4121 is compatible with mips iii instruction set architecture (isa) and mips16 application-specific extension (ase). the mips16 ase compatibility enables the v r 4121 to incorporate 16-bit-long instructions with conventional 32-bit-long instructions, resulting in compact code size, a smaller memory requirement, and lower system cost. the v r 4121 provides an easy choice for v r 4111 tm customers in terms of upgrade, since the v r 4121 and v r 4111 are fully pin compatible. the v r 4121 microprocessors high speed, compact size, and low power consumption make it ideal for use in a battery-driven, portable handheld systems. v r 4121 64-bit mips risc microprocessor block diagram 97yl-0256c (10/98) v r 4121 touch panel lcd controller pc card rom/ flash sdram/ edo dram phase locked loop osc osc v r 4120 cpu (131, 168 mhz) 16k instruction cache 8k data cache bus control unit real-time clock deadman's switch unit direct memory access unit host signal processing unit power mgmnt unit interrupt control unit cache memory unit software modem codec daa audio interface unit general-purpose i/o unit keyboard interface touch-panel interface 16550 serial interface fast infrared controller fast infrared driver rs232c driver led interface d/a converter a/d converter mic for windows ce
fea tures ordering informa tion v r 4120 cpu core mips iii isa-compliant mips 16 ase-compliant for compact code density (40% denser code than mips32) five-stage pipeline r unning up to 168 mhz single-cycle 32-bit mac instr uction for digital signal pr ocessing operations memor y management unit 32-bit physical addr ess range of 4 gb with 40-bit vir tual addr ess space 32 double-entr y tlbs suppor ting 1~256 kb page sizes up to 64 mb of sdram/edo/fast-page dram and 64 mb of srom/flash memor y/mask rom up to 66-mhz operation cache memor y unit 16-kb dir ect-mapped instr uction cache 8-kb dir ect-mapped data cache w rite-back cache for r educing stor e operations bus control unit 32-bit and 16-bit addr essing dynamic bus sizing; subset of isa bus power management unit with four power-sa ving modes full speed standby suspend hiber nate clock genera tor unit built-in ppl for fr equency multiplication exter nal bus fr equency of 16/33 mhz serial interf ace unit 16550-compatible rs-232c compliant up to 115 kbps separate debugging serial por t other peripherals real-time clock with four built-in timers inter r upt contr ol unit with inter nal and exter nal inter r upts dma addr ess unit and dma contr ol unit with five dif fer ent channels general-purpose i/o unit with 49 general-purpose i/o pins 96-key keyboar d and touch-panel inter face 10-bit a/d conver ter for touch-pannel and audio input fast ir unit: 0.5 to 4 mbps irda 1.1 standar d communication audio inter face unit and 10-bit d/a conver ter for audio output host signal pr ocessing unit with glueless inter face to telecom codec for softwar e modem implementation ac/dc specifica tions 131 and 168 mhz maximum fr equency 2.5- and 3.3-volt operation 131 mhz at 300-mw typical power consumption (tar get specification) 168 mhz at 385-mw typical power consumption (tar get specification) p ackage compact size: 16 x 16 x 1.3 mm 224-pin fpbga v r 4102 tm and v r 4111 pin compatibility p ar t number p ackage maximum opera ting frequency pd30121s1-131-3c 224-pin fpbga 131 mhz pd30121s1-168-3c 224-pin fpbga 168 mhz
example handheld pc applica tion with v rc 4171a 97yl-0257c (10/98) codec rs232 driver v r 4121 32-bit v rc 4171a pc card lcd panel 16-bit touch panel software modem pc connect port control 96-key scan keyboard ir led sdram rom video ram daa lcd control pc card control fast infrared controller serial interface real-time clock w/ timers key scanner gpio touch panel control a/d converter clock generator bus control host signal processing v r 4120 168 mhz power management dma control d/a conv. interrupt control audio interface codec i/f mic v r 4102, v r 4111, and v r 4121 comp arison v r 4102 v r 4111 v r 4121 cpu v r 4100 v r 4110 v r 4120 max. pipeline clock 54 mhz 90 mhz 168 mhz cache size instr uction: 4kb/data: 1kb instr uction: 16kb/data: 8kb instr uction: 16kb/data: 8kb per for mance 60 dhr ystone mips 115 dhr ystone mips 224 dhr ystone mips instr uction set mips iii mips iii, 16 mips iii, 16 mac instr uction 16-bit 16-bit 32-bit operating v oltage 3.3 v 2.5 v (cor e); 3.3 v (i/o) 2.5 v (cor e); 3.3 v (i/o) integrated peripherals same same same memor y inter face 32 mb dram 64 mb dram 64 mb dram (sdram) 32 mb rom 64 mb rom 64 mb rom power consumption 250 mw 200 mw 385 mw package 216-pin lqfp 224-pin fpbga 224-pin fpbga 224-pin fpbga pr ocess t echnology 0.35-micr on uc1 pr ocess 0.25-micr on uc2 pr ocess 0.25-micr on ur2 pr ocess
? 1998 nec electr onics inc. nec, v r series, v r 4100, v r 4110, v r 4111, v r 4121, v r 4102, and v rc 4171 ar e either trademarks or r egister ed trademarks of nec corporation in the united states and/or other countries. mips is a r egister ed trademark of mips t echnologies inc. i r da is a r egister ed trademark of infrar ed data association. w indows and w indows ce ar e either trademarks or r egister ed trademarks of micr osoft corporation in the united states and/or other countries. all other trademarks ar e the pr oper ty of their r espective owners. no par t of this document may be copied or r epr oduced in any for m or by any means without the prior written consent of nec electr onics inc. (necel). the infor mation in this document is subject to change without notice. all devices sold by necel are covered by the provisions appearing in necel terms and conditions of sales onl y , including the limit a tion of liability , w arranty , and p a tent provisions. necel makes no war ranty , expr ess, statutor y , implied, or by description, r egar ding infor mation set for th her ein or r egar d - ing the fr eedom of the described devices fr om patent infringement. necel assumes no r esponsibility for any er r ors that may appear in this document. necel makes no commitments to update or to keep cur r ent infor mation contained in this document. the devices listed in this document ar e not suitable for use in applications such as, but not limited to, air craft contr ol systems, aer ospace equipment, submarine cables, nuclear r eactor contr ol systems, and life-suppor t systems. standar d quality grade devices ar e r ecommended for computers, of fice equipment, communication equipment, test and measur ement equipment, machine tools, industrial r obots, audio and visual equip - ment, and other consumer pr oducts. for automotive and transpor tation equipment, traf fic contr ol systems, and anti-disaster and anti-crime systems, it is r ecommended that the customer contact the r esponsible necel sales - person to deter mine the r eliability r equir ements for any such application and any cost adder . necel does not r ecommend or appr ove use of any of its pr oducts in life-suppor t devices or systems or in any application wher e fail - ur e could r esult in injur y or death. if customers wish to use necel devices in applications not intended by necel, customers must contact the r esponsible necel salespeople to deter mine necel s willingness to suppor t a given application. document # u13652eu1v0pb00 for literatur e, call 1-800-366-9782 7 a.m. to 6 p.m. pacific time or fax your r equest to 1-800-729-9288 or visit our w eb site at www .nec.com
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