MB81F643242C-60FN View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB81F643242C-60FN

MEMORY CMOS 4 × 512 K × 32 BIT SYNCHRONOUS DYNAMIC RAM

Fujitsu 

MB81F643242C-60/-70/-10 Advanced Info (AE0.1E)

OPERATION COMMAND TABLE (Applicable to single bank)

Current

State

CS RAS CAS WE

Addr

Command

Function

Notes

Idle

HXXX

X

DESL

NOP

L HHH

X

NOP

NOP

L HH L

X

BST

NOP

L H L H BA, CA, AP READ/READA Illegal

*2

L H L L BA, CA, AP WRIT/WRITA Illegal

*2

L LHH

BA, RA

ACTV

Bank Active after tRCD

L LHL

BA, AP

PRE/PALL NOP

L L LH

X

REF/SELF Auto-refresh or Self-refresh

*3, *6

LLLL

MODE

MRS

Mode Register Set

(Idle after tRSC)

*3, *7

Bank Active H X X X

X

DESL

NOP

L HHH

X

NOP

NOP

L HH L

X

BST

NOP

L H L H BA, CA, AP READ/READA Begin Read; Determine AP

L H L L BA, CA, AP WRIT/WRITA Begin Write; Determine AP

L LHH

BA, RA

ACTV

Illegal

*2

L LHL

BA, AP

PRE/PALL Precharge; Determine Precharge Type

L L LH

X

REF/SELF Illegal

LLLL

MODE

MRS

Illegal

(Continued)

8

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