IS42S32160A-75BL datasheet(5/60 Pages) ISSI

Part #	IS42S32160A-75BL

Description	4M Words x 32 Bits x 4 Banks (512-MBIT) SYNCHRONOUS DYNAMIC RAM

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

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5 / 60 page

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

5

Rev. 00

E

0

7/21/09

IS42S32160A

Command

State

CKEn-1 CKE

DQM(6) BS0,1 A10

A9-0

A12, A11

CS# RAS# CAS# WE#

BankActivate

Idle (3)

H

X

V

Row address

L

H

BankPrecharge

Any

H

X

V

L

X

L

H

L

PrechargeAll

Any

H

X

H

X

L

H

L

Write

Active (3)

HX

X

V

L

H

L

Write and Auto Precharge Active (3)

HX

X

V

H

L

H

L

Read

Active (3)

HX

X

V

L

H

L

H

Read and Autoprecharge Active (3)

HX

X

V

H

L

H

L

H

Mode Register

Set Idle

H

X

OP code

L

No-Operation

Any

H

X

L

H

Burst Stop

Active(4)

HX

X

L

H

L

Device Deselect

Any

H

X

H

X

AutoRefresh

Idle

H

X

L

H

SelfRefresh Entry

Idle

H

L

X

L

H

SelfRefresh Exit

Idle

L

H

X

H

X

(SelfRefresh)

L

H

Clock Suspend Mode Entry Active

H

L

X

Power Down Mode Entry

Any(5)

HL

X

H

X

LH

H

Clock Suspend Mode Exit Active

L

H

X

Power Down Mode Exit

Any

L

H

X

H

X

(PowerDown)

L

H

Data Write/Output Enable Active

H

X

L

X

Data Mask/Output Disable Active

H

X

H

X

Column

address

(A0 ~A8)

Column

address

(A0 ~A8)

Operation Mode

Fully synchronous operations are performed to latch the commands at the positive edges of CLK.Table 2 shows the truth

table for the operation commands.

Note:

1. V =Valid,X =Don ’t care,L =Logic low,H =Logic high

2. CKEn signal is input level when commands are provided.

CKEn-1 signal is input level one clock cycle before the commands are provided.

3. These are states of bank designated by BS signal.

4. Device state is 1,2,4,8,and full page burst operation.

5. Power Down Mode can not enter in the burst operation.

When this command is asserted in the burst cycle,device state is clock suspend mode.

6. DQM0-3

Table 2.Truth Table (Note (1),(2))

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IS42S32160A-75BL Datasheet(PDF) 5 Page - Integrated Silicon Solution, Inc

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