M2S56D20TP-75 View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

Manufacturer

M2S56D20TP-75

256M Double Data Rate Synchronous DRAM

MITSUBISHI ELECTRIC  

DDR SDRAM (Rev.0.0)

Sep.'99 Preliminary

MITSUBISHI LSIs

M2S56D20/ 30 TP

256M Double Data Rate Synchronous DRAM

FUNCTION TRUTH TABLE (continued)

Current State /CS /RAS /CAS /WE Address

PRE -

H X X XX

CHARGING L

H

H

HX

L H H L BA

L H L X BA, CA, A10

L

L

H H BA, RA

L

L

H

L BA, A10

L

L

L

HX

Op-Code,

L

L

L

L

Mode-Add

ROW

H X X XX

ACTIVATING L

H

H

HX

L H H L BA

L H L X BA, CA, A10

L

L

H H BA, RA

L

L

H

L BA, A10

L

L

L

HX

Op-Code,

L

L

L

L

Mode-Add

WRITE RE- H X X X X

COVERING L H H H X

L H H L BA

L H L X BA, CA, A10

L

L

H H BA, RA

L

L

H

L BA, A10

L

L

L

HX

Op-Code,

L

L

L

L

Mode-Add

Command

Action

DESEL NOP (Idle after tRP)

NOP

NOP (Idle after tRP)

TERM

ILLEGAL

READ / WRITE ILLEGAL

ACT

ILLEGAL

PRE / PREA NOP (Idle after tRP)

REFA

ILLEGAL

MRS

ILLEGAL

Notes

2

2

2

4

DESEL NOP (Row Active after tRCD)

NOP

NOP (Row Active after tRCD)

TERM

ILLEGAL

2

READ / WRITE ILLEGAL

2

ACT

ILLEGAL

2

PRE / PREA ILLEGAL

2

REFA

ILLEGAL

MRS

ILLEGAL

DESEL NOP

NOP

NOP

TERM

ILLEGAL

2

READ / WRITE ILLEGAL

2

ACT

ILLEGAL

2

PRE / PREA ILLEGAL

2

REFA

ILLEGAL

MRS

ILLEGAL

MITSUBISHI

ELECTRIC

9

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