Description

The MC-4564EC727 is a 67,108,864 words by 72 bits synchronous dynamic RAM module on which 36 pieces of 128 M SDRAM: μPD45128441 are assembled.

This module provides high density and large quantities of memory in a small space without utilizing the surface mounting technology on the printed circuit board.

Decoupling capacitors are mounted on power supply line for noise reduction.

Features

? 67,108,864 words by 72 bits organization (ECC type)

? Clock frequency and access time from CLK

? 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 BA0 and BA1 (Bank Select)

? Programmable burst-length (1, 2, 4, 8 and Full Page)

? Programmable wrap sequence (Sequential / Interleave)

? Programmable /CAS latency (2, 3)

? Automatic precharge and controlled precharge

? CBR (Auto) refresh and self refresh

? All DQs have 10 ? ± 10 of series resistor

? Single 3.3 V ±0.3 V power supply

? LVTTL compatible

? 4,096 refresh cycles/64 ms

? Burst termination by Burst Stop command and Precharge command

? 168-pin dual in-line memory module (Pin pitch = 1.27 mm)

? Registered type

? Serial PD

? Stacked monolithic technology