MC-458CA721XSA-A80中文资料美光科技数据手册PDF规格书

Description

The MC-458CA721ESA, MC-458CA721PSA and 458CA721XSA are 8,388,608 words by 72 bits synchronous dynamic RAM module (Small Outline DIMM) on which 5 pieces of 128M SDRAM: µPD45128163 are assembled.

These modules provide 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

• 8,388,608 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, 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

• Single 3.3V ± 0.3V power supply

• LVTTL compatible

• 4,096 refresh cycles/64 ms

• Burst termination by Burst Stop command and Precharge command

• 144-pin small outline dual in-line memory module (Pin pitch = 0.8 mm)

• Unbuffered type

• Serial PD