M2V56S20ATP View Datasheet(PDF) - Mitsumi

Part Name

Description

Manufacturer

M2V56S20ATP

256M Synchronous DRAM

Mitsumi 

SDRAM (Rev.1.01)

Single Data Rate

MITSUBISHI LSIs

M2V56S20/ 30/ 40 ATP -5, -6, -7

Jul '01

256M Synchronous DRAM

FUNCTION TRUTH TABLE (continued)

Current State /CS

WRITE

H

L

L

L

L

L

/RAS /CAS /WE

Address

X

X

XX

H

H

HX

H

H

LX

H

L

H BA, CA, A10

H

L

L BA, CA, A10

L

H

H BA, RA

Command

Action

DESEL NOP (Continue Burst to END)

NOP

NOP (Continue Burst to END)

TBST

Terminate Burst

Terminate Burst, Latch CA,

READ / READA Begin Read, Determine Auto-

Precharge*3

WRITE /

WRITEA

ACT

Terminate Burst, Latch CA,

Begin Write, Determine Auto-

Precharge*3

Bank Active / ILLEGAL*2

L

L

H

L BA, A10

L

L

L

HX

PRE / PREA Terminate Burst, Precharge

REFA

ILLEGAL

Op-Code,

L

L

L

L Mode-Add

MRS

ILLEGAL

READ with

H

X

X

XX

DESEL NOP (Continue Burst to END)

AUTO

L

H

H

HX

PRECHARGE L

H

H

LX

NOP

TBST

NOP (Continue Burst to END)

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

L

L

H

L BA, A10

ACT

Bank Active / ILLEGAL*2

PRE / PREA ILLEGAL*2

L

L

L

HX

Op-Code,

L

L

L

L

Mode-Add

REFA

MRS

ILLEGAL

ILLEGAL

WRITE with H

X

X

XX

AUTO

L

H

H

HX

PRECHARGE L

H

H

LX

DESEL

NOP

TBST

NOP (Continue Burst to END)

NOP (Continue Burst to END)

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

PRE / PREA ILLEGAL*2

L

L

L

HX

REFA

ILLEGAL

L

L

L

L Op-Code,

Mode-Add

MRS

ILLEGAL

MITSUBISHI ELECTRIC

8

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