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Semiconductor
MR27V3255D
1,048,576-Double Word x 32-Bit or 2,097,152-Word x 16-Bit 8-Double Word x 32-Bit or 16-Word x 16-Bit Page Mode One Time PROM
DESCRIPTION
1A
The MR27V3255D is a 32Mbit electrically Programmable Read-Only Memory with page mode. Its configuration can be electrically switched between 1,048,576 double word x 32bit and 2,097,152 word x 16bit. The MR27V3255D operates on a single +3.3V power supply and is TTL compatible. The MR27V3255D provides Page mode which can greatly reduce the read access time. Since the MR27V3255D operates asynchronously , external clocks are not required , making this device easyto-use. The MR27V3255D is suitable as large-capacity fixed memory for microcomputers and data terminals. It is manufactured using a CMOS double silicon gate technology and is offered in 70-pin SSOP or 70-pin TSOP packages.
FEATURES
* 1,048,576 double word x 32bit / 2,097,152 word x 16bit electrically switchable configuration * Single +3.3V power supply * Access time 80ns Page mode access time 25ns * Input / Output TTL compatible * Three-state output * Packages 70-pin plastic SSOP (SSOP70-P-500-0.80-K) (Product name : MR27V3255DMB) 70-pin plastic TSOP (TSOP II 70-P-400-0.65-K) (Product name : MR27V3255DTA)
November 1999
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MR27V3255D
PIN CONFIGURATION (TOP VIEW)
A0 1 A1 2 A2 3 A3 4 A4 5 A5 6 VCC 7 D0 8 D16 9 D1 10 D17 11 VSS 12 VCC 13 D2 14 D18 15 D3 16 D19 17 D4 18 D20 19 D5 20 D21 21 VSS 22 VCC 23 D6 24 D22 25 D7 26 D23 27 VSS 28 A6 29 A7 30 A8 31 A9 32 A10 33 A11 34 A12 35
70 VPP 69 NC 68 NC 67 WORD 66 OE 65 CE 64 VSS 63 D31/A-1 62 D15 61 D30 60 D14 59 VSS 58 VCC 57 D29 56 D13 55 D28 54 D12 53 D27 52 D11 51 D26 50 D10 49 VSS 48 VCC 47 D25 46 D9 45 D24 44 D8 43 VCC 42 A19 41 A18 40 A17 39 A16 38 A15 37 A14 36 A13 PIN NAMES D31/A-1 A0 - A19 D0 - D30 CE OE VCC VSS WORD VPP NC FUNCTIONS Data output / Address input Address input Data output Chip enable Output enable Power supply voltage GND Mode switch Program power supply voltage Non connection
70-pin SSOP , TSOP (II)
2/10
MR27V3255D
BLOCK DIAGRAM
A-1
X16/X32 Switch
CE
OE
WORD
CE
OE
PGM
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19
Row Decoder
Memory Matrix
Address Buffer
1,048,576X32-Bit or 2,097,152X16-Bit
Column Decoder
Multiplexer & Page Data Latch
Output Buffer
D0 D1
D2 D3
D4 D5
D6 D7
D8 D9
D30
D10 D11
D12 D13
D14 D15
In 16-bit output mode, these pins are three-stated and pin D31 functions as the A-1 address pin.
D16 D17
D18 D19
D20 D21
D22 D23
D24 D25
D26 D27
D28 D29
D31
FUNCTION TABLE
MODE READ (32-Bit) READ (16-Bit) OUTPUT DISABLE STAND-BY PROGRAM PROGRAM INHIBIT PROGRAM VERIFY CE L L L H L H H OE L L H * H H L L 9.75V 4.0V DOUT WORD H L H L H L DIN * 3.3V DOUT VPP VCC D0 - D15 D16 - D30 DOUT Hi-Z Hi-Z * Hi-Z Hi-Z Hi-Z Hi-Z L/H * L/H D31/A-1 L/H
* : Don't Care (H or L or Open) 3/10
MR27V3255D
ABSOLUTE MAXIMUM RATINGS
Parameter Operating temperature under bias Storage temperature Input voltage Output voltage Power supply voltage Program power supply voltage Power dissipation per package Symbol Topr Tstg VI VO VCC VPP PD relative to VSS Condition Value 0 to 70 -55 to 125 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 -0.5 to 5 -0.5 to 11.5 1.0 Unit
C C
V V V V W
RECOMMENDED OPERATING CONDITIONS FOR READ
(Ta=0 to 70C) Parameter VCC power supply voltage VPP power supply voltage Input "H" level Input "L" level Voltage is relative to Vss * : Vcc+1.5V (Max.) when pulse width of overshoot is less than 10nS. ** : -1.5V (Min.) when pulse width of undershoot is less than 10nS. Symbol VCC VPP VIH VIL VCC=3.0V-3.6V Condition Min. 3.0 -0.5 2.2 -0.5** Typ. Max. 3.6 VCC+0.5 VCC+0.5* 0.6 Unit V V V V
4/10
MR27V3255D
ELECTRICAL CHARACTERISTICS (Read operation)
DC Characteristics (VCC=3.3V0.3V, Ta=0 to 70C) Parameter Input leakage current Output leakage current VCC power supply current (Standby) VCC power supply current (Read) VPP power supply current Input "H" level Input "L" level Output "H" level Output "L" level Voltage is relative to Vss * : Vcc+1.5V (Max.) when pulse width of overshoot is less than 10nS. ** : -1.5V (Min.) when pulse width of undershoot is less than 10nS. AC Characteristics (VCC=3.3V0.3V, Ta=0 to 70C) Parameter Address access cycle time Address access time Page access cycle time Page access time CE access time OE access time Output disable time Output hold time Symbol TC TACC TPC TPAC TCE TOE TCHZ TOHZ TOH Condition CE=OE=VIL OE=VIL CE=VIL OE=VIL CE=VIL CE=OE=VIL Min. 80 25 0 0 0 Max. 80 25 80 25 25 20 Unit ns ns ns ns ns ns ns ns ns Symbol ILI ILO ICS1 ICS2 ICCA IPP VIH VIL VOH VOL tc=80ns VPP=VCC IOH=-400A IOL=2.1mA Condition VI=0 to Vcc VO=0 to Vcc CE=VCC CE=VIH CE=VIL , OE=VIH Min. 2.2 -0.5** 2.4 Typ. Max. 10 10 50 1 100 10 VCC+0.5* 0.6 0.4 Unit A A A mA mA A V V V V
Measurement conditions Input signal level Input timing reference level Output load Output timing reference level
0V/3V 0.8V/2.0V 100pF 0.8V/2.0V 2.08V
800ohms Output 100pF
5/10
MR27V3255D
TIMING CHART NORMAL MODE READ CYCLE
tC ADDRESS tCE CE tOH
tOE OE tACC DOUT Hi-Z
tCHZ
tOHZ Valid Data Hi-Z
PAGE MODE READ CYCLE tC A3 - A19 tPC A0 - A2 (X32 mode) A-1 - A2 (X16 mode) tCE CE tCHZ tOE OE tACC DOUT Hi-Z Hi-Z tPAC tPAC tOHZ tOH tPC
6/10
MR27V3255D
ELECTRICAL CHARACTERISTICS (Programming operation)
DC Characteristics (Ta=25C5C) Parameter Input leakage current VPP power supply current (Program) VCC power supply current Input "H" level Input "L" level Output "H" level Output "L" level Program voltage VCC power supply voltage Voltage is relative to Vss Symbol ILI IPP2 ICC VIH VIL VOH VOL VPP VCC Condition VI=VCC+0.5V CE=VIL IOH=-400A IOL=2.1mA Min. 3.0 -0.5 2.4 9.5 3.9 Typ. 9.75 4.0 Max. 10 50 80 VCC+0.5 0.8 0.45 10.0 4.1 Unit A mA mA V V V V V V
AC Characteristics (Vcc=4.0V0.1V,Vpp=9.75V0.25V,Ta=25C5C) Parameter Address set-up time OE set-up time Data set-up time Address hold time Data hold time Output float delay from OE VPP voltage set-up time Program pulse width Data valid from OE Address hold from OE high Symbol TAS TOES TDS TAH TDH TOHZ TVS TPW TOE TAHO Condition Min. 100 2 100 2 100 0 2 9 0 Typ. 10 Max. 100 11 100 Unit ns s ns s ns ns s s ns ns
Pin Check Function Pin Check Function is to check contact between each device-pin and each socket-lead with EPROM programmer. Setting up address as the following condition call the preprogrammed codes on device outputs. (Vcc=3.3V0.3V,CE=OE=VIL,WORD=VIL,Ta=25C5C)
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9 PA10 PA11 PA12 PA13 PA14 PA15 PA16 PA17 PA18 PA19 PA20
A-1 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 VH* 1 0 VH* 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1
DATA
0 AAAA 5555 FFFF
Other conditions
* :VH=8V0.25V 7/10
MR27V3255D
Consecutive Programming Waveforms
A-1 - A19 tAS tPW CE tAH
High
OE tDS D0 - D15 tVS VPP tDH
Din
Din
Consecutive Program Verify Waveforms
A-1 - A19
High
CE tACC OE tOE D0 - D15 tOHZ tAHO
Dout 9.75V
Dout
VPP
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MR27V3255D
Program and Program Verify Cycle Waveforms
A-1 - A19 tAS tPW CE tOES OE tOHZ D0 - D15 tDS tDH tOE tOHZ tAHO
Din 9.75V
Dout
VPP
PIN Capacitance (VCC=3.3V, Ta=25C, f=1MHz) Parameter Input Output Symbol CIN COUT Condition VI=0V VO=0V Min. Typ. Max. 8 10 Unit pF
9/10
MR27V3255D
Programming / Verify Flow Chart Programming Verify Start Start NO Pin Check NO Bad insertion Pin Check OK Address = First location VCC=3.0V VPP=3.0V NG OK Address = First location Bad insertion
VCC=4.0V
VPP=9.75V
Verify (One Byte) PASS VCC=3.6V VPP=3.6V
Program 10s
NO Increment Address Last Address ? YES Address = First location Verify (One Byte) PASS Device Passed X=0 Device Failed NG
NG Verify (One Byte) PASS NO Increment Address Last Address ? YES VCC=3.0V VPP=3.0V YES X=2? NO Program 10s X=X+1
NG Verify (One Byte) PASS Device Passed Device Failed 10/10

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