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

FUNCTION TRUTH TABLE (continued)

Current State /CS /RAS /CAS /WE Address

PRE –

H

X

X

XX

CHARGING L

H

H

HX

Command

DESEL

NOP

Action

NOP (Idle after tRP)

NOP (Idle after tRP)

L

H

H

LX

TBST

ILLEGAL*2

L

H

L

X BA, CA, A10 READ / WRITE ILLEGAL*2

L

L

H

H BA, RA

ACT

ILLEGAL*2

L

L

L

L

L

L

H

L BA, A10

L

HX

Op-Code,

L

L

Mode-Add

PRE / PREA

REFA

NOP*4 (Idle after tRP)

ILLEGAL

MRS

ILLEGAL

ROW

H

X

X

XX

ACTIVATING L

H

H

HX

DESEL

NOP

NOP (Row Active after tRCD)

NOP (Row Active after tRCD)

L

H

H

LX

TBST

ILLEGAL*2

L

H

L

X BA, CA, A10 READ / WRITE ILLEGAL*2

L

L

H

H BA, RA

ACT

ILLEGAL*2

L

L

H

L BA, A10

PRE / PREA ILLEGAL*2

L

L

L

HX

Op-Code,

L

L

L

L

Mode-Add

WRITE RE- H

X

X

XX

COVERING L

H

H

HX

REFA

MRS

DESEL

NOP

ILLEGAL

ILLEGAL

NOP

NOP

L

H

H

LX

TBST

ILLEGAL*2

L

H

L

X BA, CA, A10 READ / WRITE ILLEGAL*2

L

L

H

H BA, RA

ACT

ILLEGAL*2

L

L

L

L

L

L

H

L BA, A10

L

HX

Op-Code,

L

L

Mode-Add

PRE / PREA

REFA

ILLEGAL*2

ILLEGAL

MRS

ILLEGAL

MITSUBISHI ELECTRIC

11

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