MH8S72BBFD-7 查看數據表（PDF） - MITSUBISHI ELECTRIC

零件编号

产品描述 (功能)

生产厂家

MH8S72BBFD-7

603,979,776-BIT ( 8,388,608-WORD BY 72-BIT ) Synchronous DYNAMIC RAM

MITSUBISHI ELECTRIC  

P rSepl iemci.n a r y

MITSUBISHI LSIs

MH8S72BBFD-7, -8

603,979,776-BIT ( 8,388,608-WORD BY 72-BIT ) Synchronous DYNAMIC RAM

FUNCTION TRUTH TABLE FOR CKE

CK CK

Current State n-1 n

SELF -

HX

REFRESH*1 L H

LH

LH

LH

LH

LL

POWER

DOWN

HX

LH

LL

ALL BANKS

IDLE*2

HH

HL

HL

HL

HL

HL

HL

LX

ANY STATE H H

other than

HL

listed above L H

LL

/S /RAS /CAS /WE Add

Action

X

X

X

X

X INVALID

H

X

X

X

X Exit Self-Refresh(Idle after tRC)

L

H H H X Exit Self-Refresh(Idle after tRC)

L

HHL

X ILLEGAL

L

HL

X

X ILLEGAL

L

L

X

X

X ILLEGAL

X

X

X

X

X NOP(Maintain Self-Refresh)

X

X

X

X

X INVALID

X

X

X

X

X Exit Power Down to Idle

X

X

X

X

X NOP(Maintain Self-Refresh)

X

X

X

X

X Refer to Function Truth Table

L

L

L

H X Enter Self-Refresh

H

X

X

X

X Enter Power Down

L

H H H X Enter Power Down

L

HHL

X ILLEGAL

L

HL

X

X ILLEGAL

L

L

X

X

X ILLEGAL

X

X

X

X

X Refer to Current State = Power Down

X

X

X

X

X Refer to Function Truth Table

X

X

X

X

X Begin CK0 Suspend at Next Cycle*3

X

X

X

X

X Exit CK0 Suspend at Next Cycle*3

X

X

X

X

X Maintain CK0 Suspend

ABBREVIATIONS:

H = High Level, L = Low Level, X = Don't Care

NOTES:

1. CKE Low to High transition will re-enable CK and other inputs asynchronously.

A minimum setup time must be satisfied before any command other than EXIT.

2. Power-Down and Self-Refresh can be entered only form the All banks idle State.

3. Must be legal command.

MIT-DS-0228-0.2

MITSUBISHI

ELECTRIC

29/Oct. /1998

11

Share Link: