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¡ Semiconductor

MSM514256C/CL

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

¡ Semiconductor

MSM514256C/CL

262,144-Word

¥ 4-Bit DYNAMIC RAM : FAST PAGE MODE TYPE

MSM514256C/CL-50

50 ns

100 ns

120 ns

446 mW

385 mW

5.5 mW/

Family

Access Time (Max.)

Cycle Time

(Min.)

Standby (Max.)

Power Dissipation

MSM514256C/CL-60

60 ns

26 ns

30 ns

14 ns

15 ns

MSM514256C/CL-45

45 ns

90 ns

468 mW

24 ns

14 ns

Operating (Max.)

1.1 mW (L-version)

130 ns

330 mW

MSM514256C/CL-70

70 ns

35 ns

20 ns

14 ns

15 ns

14 ns

20 ns

E2G0010-17-41

This version: Jan. 1998

Previous version: May 1997