HY57V121620(L)T

Rev.0.3/Dec. 01

11

COMMAND TRUTH TABLE

Note :

1. Exiting Self Refresh occurs by asynchronously bringing CKE from low to high

2. X = Don

′t care, H = Logic High, L = Logic Low. BA =Bank Address, RA = Row Address, CA = Column Address,

Opcode = Operand Code, NOP = No Operation

Command

CKEn-1

CKEn

CS

RAS

CAS

WE

DQM

ADDR

A10/

AP

BA

Note

Mode Register Set

H

X

LLLL

X

OP code

No Operation

H

X

H

XXX

XX

L

HHH

Bank Active

H

X

L

L

H

H

X

RA

V

Read

H

X

LH

LH

X

CA

L

V

Read with Autoprecharge

H

Write

HX

L

H

L

L

X

CA

L

V

Write with Autoprecharge

H

Precharge All Banks

HX

L

L

H

L

X

X

HX

Precharge selected Bank

LV

Burst Stop

H

X

L

H

H

L

X

X

DQM

H

X

V

X

Auto Refresh

H

H

L

L

L

H

X

X

Burst-Read-Single-

WRITE

H

X

LLL

H

X

A9 Pin High

(Other Pins OP code)

Entry

H

L

LLL

H

X

X

Exit

L

H

H

XXX

X

L

HHH

Precharge

power down

Entry

H

L

H

XXX

X

X

L

HHH

Exit

L

H

H

XXX

X

L

HHH

Clock

Suspend

Entry

H

L

H

XXX

X

X

L

VVV

Exit

L

H

X

X