PD45128163G5-A10LI-9JF 데이터 시트보기 (PDF) - Elpida Memory, Inc

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PD45128163G5-A10LI-9JF

128M-bit Synchronous DRAM 4-bank, LVTTL WTR (Wide Temperature Range)

Elpida Memory, Inc 

µPD45128441-I, 45128841-I, 45128163-I

4. Truth Table

4.1 Command Truth Table

Function

Device deselect

No operation

Burst stop

Read

Read with auto precharge

Write

Write with auto precharge

Bank activate

Precharge select bank

Precharge all banks

Mode register set

Symbol

DESL

NOP

BST

READ

READA

WRIT

WRITA

ACT

PRE

PALL

MRS

CKE

n–1

n

H

×

H

×

H

×

H

×

H

×

H

×

H

×

H

×

H

×

H

×

H

×

/CS /RAS /CAS /WE BA1,

BA0

H

×

×

×

×

L

H

H

H

×

L

H

H

L

×

L

H

L

H

V

L

H

L

H

V

L

H

L

L

V

L

H

L

L

V

L

L

H

H

V

L

L

H

L

V

L

L

H

L

×

L

L

L

L

L

Remark H = High level, L = Low level, × = High or Low level (Don't care), V = Valid data input

A10 A11,

A9 - A0

×

×

×

×

×

×

L

V

H

V

L

V

H

V

V

V

L

×

H

×

L

V

4.2 DQM Truth Table

Function

Data write / output enable

Data mask / output disable

Upper byte write enable / output enable

Lower byte write enable / output enable

Upper byte write inhibit / output disable

Lower byte write inhibit / output disable

Symbol

ENB

MASK

ENBU

ENBL

MASKU

MASKL

CKE

n–1

n

H

×

H

×

H

×

H

×

H

×

H

×

DQM

U

L

L

H

L

×

×

L

H

×

×

H

Remark H = High level, L = Low level, × = High or Low level (Don't care)

4.3 CKE Truth Table

Current state

Activating

Any

Clock suspend

Idle

Idle

Self refresh

Idle

Power down

Function

Symbol

Clock suspend mode entry

Clock suspend mode

Clock suspend mode exit

CBR (auto) refresh command

Self refresh entry

Self refresh exit

REF

SELF

Power down entry

Power down exit

CKE

n–1

n

H

L

L

L

L

H

H

H

H

L

L

H

L

H

H

L

L

H

L

H

/CS /RAS /CAS /WE Address

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

L

L

L

H

×

L

L

L

H

×

L

H

H

H

×

H

×

×

×

×

×

×

×

×

×

H

×

×

×

×

L

H

H

H

×

Remark H = High level, L = Low level, × = High or Low level (Don't care)

Preliminary Data Sheet E0233N10

15

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