M2V56S20AKT-5 View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

Manufacturer

M2V56S20AKT-5

256M Synchronous DRAM

MITSUBISHI ELECTRIC  

SDRAM (Rev.1.31)

Single Data Rate

Apr. '02

MITSUBISHI LSIs

M2V56S20/ 30/ 40 ATP

M2V56S20/ 30/ 40 AKT

256M Synchronous DRAM

DQM CONTROL

DQMU/L is a dual functional signal defined as the data mask for writes and the output disable for

reads. During writes, DQMU/L masks input data word by word. DQMU/L to Data In latency is 0.

During reads, DQMU/L forces output to Hi-Z word by word. DQMU/L to output Hi-Z latency is 2.

CLK

Command

DQMU/L

DQ

DQM Function

Write

Read

D0

D2 D3

masked by DQMU/L=H

Q0 Q1

Q3

disabled by DQMU/L=H

MITSUBISHI ELECTRIC

30

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