MT42C4256 Datasheet 256k X 4 Vram

Manufacturer: Micross

Overview: VRAM SMJ44C251B MT42C4256 256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM AVAILABLE AS MILITARY SPECIFICATIONS • SMD 5962-89497 •.

Datasheet Details

Class B High-Reliability Processing.
DRAM: 262144 Words × 4 Bits SAM: 512 Words × 4 Bits.
Single 5-V Power Supply (±10% Tolerance).
Dual Port Accessibility.
Simultaneous and Asynchronous Access From the DRAM and SAM Ports.
Bidirectional-Data-Transfer Function Between the DRAM and the Serial-Data Register.
4 × 4 Block-Write Feature for Fast Area Fill Operations; As Many as Four Memory Address Locations Written per Cycle From an On-Chip.

Brand Logo	Part Number	Description	Manufacturer
	MT42C4256	256K X 4 VRAM 256K x 4 DRAM	Austin Semiconductor

Part Number	Description
MT4C4001J	1 MEG x 4 DRAM