MS82V16520A-7GA 查看數據表（PDF） - Oki Electric Industry

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MS82V16520A-7GA

262,144-Word × 32-Bit × 2-Bank SGRAM

Oki Electric Industry 

OKI Semiconductor

FEDS82V16520A-01

MS82V16520A

Function Truth Table for CKE

Current State (n) CKEn-1 CKEn CS

Self Refresh

(SREF)

H

××

L

HH

L

HL

L

HL

L

HL

L

HL

L

L×

Power Down

H

××

(PD)

L

HH

L

HL

L

HL

L

HL

L

HL

L

L×

All Banks Idle

(ABI)

H

H×

H

LH

H

LL

H

LL

H

LL

H

LL

H

LL

H

LL

L

L×

Any State Other

H

than Listed Above H

H×

L×

L

H×

L

L×

RAS CAS

××

××

HH

HH

HL

L×

××

××

××

HH

HH

HL

L×

××

××

××

HH

HH

HL

LH

LL

LL

××

××

××

××

××

WE Address

Action

×

× INVALID

×

× Exit Self Refresh → ABI

H

× Exit Self Refresh → ABI

L

× ILLEGAL

×

× ILLEGAL

×

× ILLEGAL

×

× NOP (Maintain Self Refresh)

×

× INVALID

×

× Exit Self Refresh → ABI

H

× Exit Self Refresh → ABI

L

× ILLEGAL

×

× ILLEGAL

×

× ILLEGAL

×

× NOP (Continue power down mode)

×

× Refer to Truth Table

×

× Enter Power Down

H

× Enter Power Down

L

× ILLEGAL

×

× ILLEGAL

L

× ILLEGAL

H

× Enter Self Refresh

L

× ILLEGAL

×

× NOP

×

× Refer to Truth Table

×

× Begin Clock Suspend Next Cycle

×

× Enable Clock of Next Cycle

×

× Continue Clock Suspension

Note

6

6

6

6

6

6

6

6

6

Note: 6. Power-down and self refresh can be entered only when all the banks are in an idle state.

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