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)

(Continued)

Current

State

CS RAS CAS WE

Addr

Command

Function

Notes

Read

HXXX

X

DESL

NOP (Continue Burst to End → Bank

Active)

L HHH

X

NOP

NOP (Continue Burst to End → Bank

Active)

L HH L

X

BST

Burst Stop → Bank Active

L

H

L

H

BA, CA, AP

READ/READA

Terminate Burst, New Read;

Determine AP

L

H

L

L

BA, CA, AP

WRIT/WRITA

Terminate Burst, Start Write;

Determine AP

*4

L LHH

BA, RA

ACTV

Illegal

*2

L LHL

BA, AP

PRE/PALL

Terminate Burst, Precharge → Idle;

Determine Precharge Type

L L LH

X

REF/SELF Illegal

LLLL

MODE

MRS

Illegal

Write

HXXX

X

DESL

NOP (Continue Burst to End →

Bank Active)

L HHH

X

NOP

NOP (Continue Burst to End →

Bank Active)

L HH L

X

BST

Burst Stop → Bank Active

L

H

L

H

BA, CA, AP

READ/READA

Terminate Burst, Start Read;

Determine AP

*4

L

H

L

L

BA, CA, AP

WRIT/WRITA

Terminate Burst, New Write;

Determine AP

L LHH

BA, RA

ACTV

Illegal

*2

L LHL

BA, AP

PRE/PALL

Terminate Burst, Precharge;

Determine Precharge Type

L L LH

X

REF/SELF Illegal

LLLL

MODE

MRS

Illegal

(Continued)

9

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