MSM514256C Ver la hoja de datos (PDF) - Oki Electric Industry

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MSM514256C

262,144-Word x 4-Bit DYNAMIC RAM : FAST PAGE MODE TYPE

Oki Electric Industry 

E2G0010-17-41

¡ ¡ SemicondSucetormiconductor

MSM514256C/CL

This veMrsSioMn5: 1J4a2n5. 61C99/8CL

Previous version: May 1997

262,144-Word ¥ 4-Bit DYNAMIC RAM : FAST PAGE MODE TYPE

DESCRIPTION

The MSM514256C/CL is a 262,144-word ¥ 4-bit dynamic RAM fabricated in Oki's silicon-gate CMOS

technology. The MSM514256C/CL achieves high integration, high-speed operation, and low-power

consumption because Oki manufactures the device in a quadruple-layer polysilicon/single-layer

metal CMOS process. The MSM514256C/CL is available in a 20-pin plastic DIP, 26/20-pin plastic

SOJ, or 20-pin plastic ZIP. The MSM514256CL (the low-power version) is specially designed for

lower-power applications.

FEATURES

• 262,144-word ¥ 4-bit configuration

• Single 5 V power supply, ±10% tolerance

• Input : TTL compatible, low input capacitance

• Output : TTL compatible, 3-state

• Refresh : 512 cycles/8 ms, 512 cycles/64 ms (L-version)

• Fast page mode, read modify write capability

• CAS before RAS refresh, hidden refresh, RAS-only refresh capability

• Package options:

20-pin 300 mil plastic DIP

(DIP20-P-300-2.54-W1) (Product : MSM514256C/CL-xxRS)

26/20-pin 300 mil plastic SOJ (SOJ26/20-P-300-1.27) (Product : MSM514256C/CL-xxJS)

20-pin 400 mil plastic ZIP

(ZIP20-P-400-1.27) (Product : MSM514256C/CL-xxZS)

xx indicates speed rank.

PRODUCT FAMILY

Family

MSM514256C/CL-45

MSM514256C/CL-50

MSM514256C/CL-60

MSM514256C/CL-70

Access Time (Max.) Cycle Time

Power Dissipation

tRAC tAA tCAC tOEA

(Min.)

Operating (Max.) Standby (Max.)

45 ns 24 ns 14 ns 14 ns 90 ns

468 mW

50 ns 26 ns 14 ns 14 ns 100 ns

446 mW

5.5 mW/

60 ns 30 ns 15 ns 15 ns 120 ns

385 mW

1.1 mW (L-version)

70 ns 35 ns 20 ns 20 ns 130 ns

330 mW

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