EDL1216CASA-10-E 查看數據表（PDF） - Elpida Memory, Inc

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EDL1216CASA-10-E

128M bits Mobile RAM

Elpida Memory, Inc 

EDL1216CASA

Truth Table

Command Truth Table

CKE

A11,

Function

Symbol n – 1 n

/CS /RAS /CAS /WE BA1 BA0 A10 A9 - A0

Device deselect

DESL

H

×

H

×

×

×

×

×

×

×

No operation

NOP

H

×

L

H

H

H

×

×

×

×

Burst stop

BST

H

H

L

H

H

L

×

×

×

×

Read

READ

H

×

L

H

L

H

V

V

L

V

Read with auto precharge

READA H

×

L

H

L

H

V

V

H

V

Write

WRIT

H

×

L

H

L

L

V

V

L

V

Write with auto precharge

WRITA H

×

L

H

L

L

V

V

H

V

Bank activate

ACT

H

×

L

L

H

H

V

V

V

V

Precharge select bank

PRE

H

×

L

L

H

L

V

V

L

×

Precharge all banks

PALL

H

×

L

L

H

L

×

×

H

×

Mode register set

MRS

H

×

L

L

L

L

L

L

L

V

Extended mode register set EMRS H

×

L

L

L

L

H

L

L

V

Remark: H: VIH. L: VIL. ×: VIH or VIL, V = Valid data

DQM Truth Table

Function

Symbol

Data write / output enable

ENB

Data mask / output disable

MASK

Upper byte write enable / output enable

ENBU

Lower byte write enable / output enable

ENBL

Upper byte write inhibit / output disable

MASKU

Lower byte write inhibit / output disable

MASKL

Remark: H: VIH. L: VIL. ×: VIH or VIL

CKE

n–1

n

H

×

H

×

H

×

H

×

H

×

H

×

DQM

U

L

L

L

H

H

L

×

×

L

H

×

×

H

CKE Truth Table

Current state

Activating

Any

Clock suspend

Idle

Idle

Idle

Function

Clock suspend mode entry

Clock suspend mode

Clock suspend mode exit

Auto refresh command

Self refresh entry

Power down entry

Idle

Self refresh

Deep power down entry

Self refresh exit

Power down

Power down exit

Deep power down Deep power down exit

Remark: H: VIH. L: VIL. ×: VIH or VIL

CKE

Symbol n – 1 n

H

L

L

L

L

H

REF

H

H

SELF

H

L

PD

H

L

H

L

DPD

H

L

L

H

L

H

L

H

L

H

L

H

/CS /RAS /CAS /WE Address

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

L

L

L

H

×

L

L

L

H

×

L

H

H

H

×

H

×

×

×

×

L

H

H

L

×

L

H

H

H

×

H

×

×

×

×

L

H

H

H

×

H

×

×

×

×

×

×

×

×

×

Data Sheet E0195E30 (Ver. 3.0)

14

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