MC-45V8AB641KFA-A75中文资料瑞萨数据手册PDF规格书

描述 Description

The MC-45V8AB641 is a 8,388,608 words by 64 bits VirtualChannel synchronous dynamic RAM module on which 4 pieces of 128M VirtualChannel SDRAM : µPD45125161 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.

特性 Features

• 8,388,608 words by 64 bits organization

• Clock frequency and access time from CLK

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

• Dual internal banks controlled by BA0 (Bank Select)

• Programmable wrap sequence (sequential / interleave)

• Programmable burst length (1, 2, 4, 8 and 16)

• Read latency (2)

• Prefetch read latency (4)

• Auto precharge and without auto precharge

• Auto refresh and self refresh

• Single 3.3 V ± 0.3 V power supply

• Interface: LVTTL

• Refresh cycle: 4K cycles/64 ms

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

• Unbuffered type

• Serial PD