IS43TR16640A-125KBL View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

IS43TR16640A-125KBL

128MX8, 64MX16 1Gb DDR3 SDRAM

Unspecified 

IS43TR16640A, IS43TR81280A

2. FUNCTION DESCRIPTION

2.1 Simplified State Diagram

Power

applied

Power

On

Reset

Procedure

From

Any state RESET

Initialization

MRS,MPR,

Write

Leveling

ZQCL

ZQ

Calibration

ZQCL

ZQCS

Idle

SRE

SRX

REF

Self

Refresh

Refreshing

Write

Active

Power

Down

PDX

PDE

ACT

PDE

PDX

Activating

Writing

Write

Bank

Active

Read

Write A Read A

Read

Write

Precharge

Power

Down

Reading

Read

Write A

Writing

Write A Read A

PRE,PREA

PRE,PREA PRE,PREA

Read A

Reading

Abbreviation

ACT

PRE

PREA

MRS

REF

ZQCL

Function

Active

Precharge

Precharge All

Mode Register Set

Refresh

ZQ Calibration Long

Abbreviation

Read

Read A

Write

Write A

RESET

ZQCS

Precharging

Function

RD, RDS4, RDS8

RDA, RDAS4, RDAS8

WR, WRS4, WRS8

WRA, WRAS4, WRAS8

Start RESET Procedure

ZQ Calibration Short

Automatic

Sequence

Command

Sequence

Abbreviation

PDE

PDX

SRE

SRX

MPR

Function

Enter Power-down

Exit Power-down

Self-Refresh entry

Self-Refresh exit

Multi-Purpose Register

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

5

Rev. 00A

04/16/2012

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