IS42LS16800A View Datasheet(PDF) - Integrated Circuit Solution Inc

Part Name

Description

Manufacturer

IS42LS16800A

16Meg x 8, 8Meg x16 & 4Meg x 32 128-MBIT SYNCHRONOUS DRAM

Integrated Circuit Solution Inc 

IS42S81600A, IS42S16800A, IS42S32400A

IS42LS81600A, IS42LS16800A, IS42LS32400A

ISSI ®

COMMAND TRUTH TABLE

CKE

Function Symbol

n–1 n

Device deselect

H

×

No operation

H×

L

Burst stop

H

H

Read

H

×

Read with auto precharge H

×

Write

H

×

Write with auto precharge H

×

Bank activate

H

×

Precharge select bank H

×

Precharge all banks

H

×

Mode register set

H

×

Extended mode reg set H

×

A11

CS

RAS CAS WE BA1 BA0 A10 A9 - A0

H

×

×

×

×

×

×

×

H

H

H

×

×

×

L

H

H

L

×

×

×

×

L

H

L

H

V

V

L

V

L

H

L

H

V

V

H

V

L

H

L

L

V

V

L

V

L

H

L

L

V

V

H

V

L

L

H

H

V

V

V

V

L

L

H

L

V

V

L

×

L

L

H

L

×

×

H

×

L

L

L

L

L

L

L

V

L

L

L

L

H

L

L

V

Note: H=VIH, L=VIL x= VIH or VIL, V = Valid Data.

DQM TRUTH TABLE

Function Symbol

Data write / output enable

Data mask / output disable

Upper byte write enable / output enable

Lower byte write enable / output enable

Upper byte write inhibit / output disable

Lower byte write inhibit / output disable

CKE

n-1

n

H

×

H

×

H

×

H

×

H

×

H

×

Note: H=VIH, L=VIL x= VIH or VIL, V = Valid Data.

DQM

U

L

L

L

H

H

L

×

×

L

H

×

×

H

Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774

11

ADVANCEDINFORMATION Rev. 00A

06/01/02

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