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Part: MSM27C452CZ
Category:
Memory
-> ROM
Description: 512k X 8 / 256k X 16 Page Mode OTP ROM
Company: Oki Semiconductor
Datasheet: Download MSM27C452CZ datasheet File size : 181 kB
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Datasheet text preview:
¡ Semiconductor
MSM27C452CZ
262,144-Word x 16-Bit or 524,288-Word x 8-Bit 8-Word x 16-Bit or 16-Word x 8-Bit Page Mode One Time PROM
DESCRIPTION
1A
The MSM27C452CZ is a 4Mbit electrically Programmable Read-Only Memory with page mode. Its configuration can be electrically switched between 262,144 word x 16bit and 524,288 word x 8bit. The MSM27C452CZ operates on a single +5V power supply and is TTL compatible. The MSM27C4 52CZ provides Page mode which can greatly reduce the read access time. Since the MSM27C452 CZ operates asynchronously , external clocks are not required , making this device easy-to-use. The MSM27C452CZ 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 40-pin DIP , 40-pin SOP or 44-pin TSOP packages.
FEATURES
· 262,144 word x 16bit / 524,288 word x 8bit electrically switchable configuration · Single +5V power supply · Access time 80ns Page mode access time 50ns · Input / Output TTL compatible · Three-state output · Packages 40-pin plastic DIP (DIP40-P-600-2.54) 40-pin plastic SOP (SOP40-P-525-1.27-K) 44-pin plastic TSOP (TSOP II 44-P-400-0.80-K)
1
MSM27C452CZ
PIN CONFIGURATION (TOP VIEW)
NC 1 NC 2 A17 1 A7 2 A6 3 A5 4 A4 5 A3 6 A2 7 A1 8 A0 9 CE 10 VSS 11 OE 12 D0 13 D8 14 D1 15 D9 16 D2 17 D10 18 D3 19 D11 20 40 A8 39 A9 38 A10 37 A11 36 A12 35 A13 34 A14 33 A15 32 A16 31 BYTE/Vpp 30 VSS 29 D15/A-1 28 D7 27 D14 26 D6 25 D13 24 D5 23 D12 22 D4 21 VCC 40-pin DIP A17 1 A7 2 A6 3 A5 4 A4 5 A3 6 A2 7 A1 8 A0 9 CE 10 VSS 11 OE 12 D0 13 D8 14 D1 15 D9 16 D2 17 D10 18 D3 19 D11 20 40 A8 39 A9 38 A10 37 A11 36 A12 35 A13 34 A14 33 A15 32 A16 31 BYTE/Vpp 30 VSS 29 D15/A-1 28 D7 27 D14 26 D6 25 D13 24 D5 23 D12 22 D4 21 VCC A17 3 A7 4 A6 5 A5 6 A4 7 A3 8 A2 9 A1 10 A0 11 CE 12 VSS 13 OE 14 D0 15 D8 16 D1 17 D9 18 D2 19 D10 20 D3 21 D11 22
44 NC 43 NC 42 A8 41 A9 40 A10 39 A11 38 A12 37 A13 36 A14 35 A15 34 A16 33 BYTE/Vpp 32 VSS 31 D15/A-1 30 D7 29 D14 28 D6 27 D13 26 D5 25 D12 24 D4 23 VCC 44-pin TSOP
40-pin SOP
PIN NAMES D15/A-1 A0 - A17 D0 - D14 CE OE VCC VSS BYTE/VPP NC Address input Data output Chip enable Output enable
FUNCTIONS Data output / Address input
Power supply voltage GND Mode switch / Program power supply voltage Non connection
2
MSM27C452CZ
BLOCK DIAGRAM
A-1
X8/X16 Switch
CE
OE
BYTE/VPP
CE
OE
PGM
Column Decoder
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17
Row Decoder
Memory Matrix
Address Buffer
262,144X16-Bit or 524,288X8-Bit
Multiplexer & Page Data Latch
Output Buffer
D0 D1
D2 D3
D4 D5
D6 D7
D8
D10 D9
D12
D14 D15
D11
D13
In 8-bit output mode, these pins are three-stated and pin D15 functions as the A-1 address pin.
FUNCTION TABLE
MODE READ (16-Bit) READ (8-Bit) OUTPUT DISABLE STAND-BY PROGRAM PROGRAM INHIBIT PROGRAM VERIFY * : Don't Care 3 CE L L L H L H H OE BYTE/VPP L L H * H H L 11.5V 6.25V H L H L H L 4.5V to 5.5V DOUT VCC D0 - D7 D8 - D14 DOUT Hi-Z Hi-Z * Hi-Z * DIN Hi-Z DOUT D15/A-1 L/H
Others parts begin by ms
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