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Part: MSM27C3255CZ
Category:
Memory
-> ROM
Description: 2M X 16 / 1M X 32 Page Mode OTP ROM
Company: Oki Semiconductor
Datasheet: Download MSM27C3255CZ datasheet File size : 181 kB
Request For quote: Find where to buy MSM27C3255CZ
Datasheet text preview:
¡ Semiconductor
MSM27C3255CZ
1,048,576-Double Word x 32-Bit or 2,097,152-Word x 16-Bit 4-Double Word x 32-Bit or 8-Word x 16-Bit Page Mode One Time PROM
DESCRIPTION
1A
The MSM27C3255CZ 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 MSM27C3255CZ operates on a single +5V power supply and is TTL compatible. The MSM27C3255CZ provides Page mode which can greatly reduce the read access time. Since the MSM27C3255CZ operates asynchronously , external clocks are not required , making this device easy-to-use. The MSM27C3255CZ 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 package.
FEATURES
· 1,048,576 double word x 32bit / 2,097,152 word x 16bit electrically switchable configuration · Single +5V power supply · Access time 100ns Page mode access time 30ns · Input / Output TTL compatible · Three-state output · Packages 70-pin plastic SSOP (SSOP70-P-500-0.80-K)
1
MSM27C3255CZ
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
2
MSM27C3255CZ
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 * : Don't Care 3 CE L L L H L H H OE L L H * H H L L 11.5V 6.25V DOUT WORD H L H L H L DIN * 4.5V to 5.5V 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
Others parts begin by ms
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