IS45S16320D 查看數據表（PDF） - Integrated Silicon Solution

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IS45S16320D

DRAM 512M (32Mx16) 143MHz SDR SDRAM, 3.3V

Integrated Silicon Solution 

IS42/45R86400D/16320D/32160D, IS42/45S86400D/16320D/32160D

COMMAND TRUTH TABLE

CKE

Function

n – 1 n CS RAS CAS WE BA1 BA0 A10

Device deselect (DESL)

H× H

×

×

×

×

×

×

No operation (NOP)

H× L

H

H

H

×

×

×

Burst stop (BST)

H× L

H

H

L

×

×

×

Read

H× L

H

L

H

V

V

L

Read with auto precharge H × L

H

L

H

V

V

H

Write

H× L

H

L

L

V

V

L

Write with auto precharge H × L

H

L

L

V

V

H

Bank activate (ACT)

H× L

L

H

H

V

V

V

Precharge select bank (PRE) H × L

L

H

L

V

V

L

Precharge all banks (PALL) H × L

L

H

L

×

×

H

CBR Auto-Refresh (REF) H H L

L

L

H

×

×

×

Self-Refresh (SELF)

HL L

L

L

H

×

×

×

Mode register set (MRS) H × L

L

L

L

L

L

L

Note: H=Vih, L=Vil x= Vih or Vil, V = Valid Data.

A12, A11

A9 - A0

×

×

×

V

V

V

V

V

×

×

×

×

V

DQM TRUTH TABLE

CKE

Function n-1 n

Data write / output enable

H

×

Data mask / output disable H ×

Upper byte write enable / output enable

H

×

Lower byte write enable / output enable

H

×

Upper byte write inhibit / output disable

H

×

Lower byte write inhibit / output disable

H

×

Note:

1. H=Vih, L=Vil x= Vih or Vil, V = Valid Data.

2. x16 options shown. x32 DQM0-DQM3 is similar in function.

DQMH

L

H

L

×

H

×

DQML

L

H

×

L

×

H

Integrated Silicon Solution, Inc. — www.issi.com

9

Rev. A

08/29/2012

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