HY57V28820HC(L)T-I

Rev. 0.1/Jan. 01

10

COMMAND TRUTH TABLE

Note :

1. OP Code : Operand Code

2. V = Valid, X = Dont care, H = Logic High, L= Logic Low, RA = Row Address, CA = Column Address.

3. The burst read sigle write mode is entered by programming the write burst mode bit (A9) in the mode register to a logic 1.

Command

CKEn-1

CKEn

CS

RAS

CAS

WE

DQM

ADDR

A10/

AP

BA

Note

Mode Register Set

H

X

L

L

L

L

X

OP code

1

No Operation

H

X

HX

X

X

XX

L

HHH

Bank Active

H

X

L

L

H

H

X

RA

V

Read

HX

L

H

L

H

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

L

LLL

X

A9 Pin High

(Other Pins OP code)

MRS

Mode

Self Refresh

Entry

H

L

L

L

L

H

X

X

Exit

L

H

HX

X

X

X

L

HHH

Precharge

power down

Entry

H

L

HX

X

X

X

X

L

HHH

Exit

L

H

HX

X

X

X

L

HHH

Clock

Suspend

Entry

H

L

HX

X

X

X

X

LV

V

V

Exit

L

H

X

X