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MH64S72QJA-7

4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM

MITSUBISHI ELECTRIC  

MITSUBISHI LSIs

MH64S72QJA -7,-8

4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM

FUNCTION TRUTH TABLE(continued)

Current State

WRIT E

READ with

AUTO

PRECHARGE

WRITE with

AUTO

PRECHARGE

/S /RAS /CAS /WE Address

H

X

X

XX

L

H

H

HX

Command

DESEL

NOP

Action

NOP(Continue Burst to END)

NOP(Continue Burst to END)

L

H

H

L BA

TBST

Terminate Burst

Terminate Burst,Latch CA,

L

H

L

H BA,CA,A10 READ/READA Begin Read,Determine Auto-

Precharge*3

Terminate Burst,Latch CA,

L

H

L

L BA,CA,A10

WRITE/

Begin Write,Determine Auto-

WRITEA Precharge*3

L

L

H

H BA,RA

ACT

Bank Active/ILLEGAL*2

L

L

H

L BA,A10

PRE/PREA Terminate Burst,Precharge

L

L

L

HX

Op-Code,

L

L

L

L Mode-Add

REFA

MRS

ILLEGAL

ILLEGAL

H

X

X

XX

DESEL NOP(Continue Burst to END)

L

H

H

HX

NOP

NOP(Continue Burst to END)

L

H

H

L BA

TBST

ILLEGAL

L

H

L

H BA,CA,A10 READ/READA ILLEGAL

WRITE/

L

H

L

L BA,CA,A10

ILLEGAL

WRITEA

L

L

H

H BA,RA

ACT

Bank Active/ILLEGAL*2

L

L

H

L BA,A10

L

L

L

HX

PRE/PREA ILLEGAL*2

REFA

ILLEGAL

L

L

L

L Op-Code,

Mode-Add

MRS

ILLEGAL

H

X

X

XX

L

H

H

HX

DESEL

NOP

NOP(Continue Burst to END)

NOP(Continue Burst to END)

L

H

H

L BA

TBST

ILLEGAL

L

H

L

H BA,CA,A10 READ/READA ILLEGAL

L

H

L

L BA,CA,A10

WRITE/ ILLEGAL

WRITEA

L

L

H

H BA,RA

ACT

Bank Active/ILLEGAL*2

L

L

H

L BA,A10

PRE/PREA ILLEGAL*2

L

L

L

HX

REFA

ILLEGAL

L

L

L

L Op-Code,

Mode-Add

MRS

ILLEGAL

MIT-DS-0332-0.0

MITSUBISHI

ELECTRIC

16/Jun./1999

10

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