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

AUTO REFRESH

Single cycle of auto-refresh is initiated with a REFA (/CS= /RAS= /CAS= L, /WE= /CKE= H)

command. The refresh address is generated internally. 8192 REFA cycles within 64ms refresh 256Mbit

memory cells. The auto-refresh is performed on 4 banks concurrently. Before performing an auto-

refresh, all banks must be in idle state. Auto-refresh to auto-refresh interval is minimum tRFC. Any

command must not be issued before tRFC from the REFA command.

CLK

/CS

/RAS

/CAS

/WE

CKE

A0-12

BA0-1

Auto-Refresh

NOP or DESELECT

minimum tRFC

Auto Refresh on All Banks

Auto Refresh on All Banks

MITSUBISHI ELECTRIC

27

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