DESCRIPTION

The MSM514256C/CL is a 262,144-word x 4-bit dynamic RAM fabricated in Okis 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 x 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.