MSM514256C Datasheet PDF - Oki Electric Industry

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.