UPD4564841, UPD4564441 Datasheet - NEC

UPD4564841 64M-bit Synchronous DRAM

The µPD4564441, 4564841, 4564163 are high-speed 67,108,864-bit synchronous dynamic random-access memories, organized as 4,194,304 × 4 × 4, 2,097,152 × 8 × 4, 1,048,576 ×16 × 4 (word × bit × bank), respectively. The synchronous DRAMs achieved high-speed data transfer using the pipeline architecture. .

UPD4564841 Features

* Fully Synchronous Dynamic RAM, with all signals referenced to a positive clock edge

* Pulsed interface

* Possible to assert random column address in every cycle

* Quad internal banks controlled by A12 and A13 (Bank Select)

* Byte control (×16) by LDQM and UD

UPD4564841, UPD4564441 Datasheet