IS42R83200D, IS42R16160D

IS45R83200D, IS45R16160D

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

1

Rev. A

03/02/2010

Copyright © 2006 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time with-

out notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain

the latest version of this device specification before relying on any published information and before placing orders for products.

FEATURES

• Clockfrequency:133,100MHz

• Fullysynchronous;allsignalsreferencedtoa

positive clock edge

• Internalbankforhidingrowaccess/precharge

• SinglePowersupply:2.5V+0.2V

• LVTTLinterface

• Programmableburstlength

– (1, 2, 4, 8, full page)

• Programmableburstsequence:

Sequential/Interleave

• AutoRefresh(CBR)

• SelfRefresh

• 8Krefreshcyclesevery16ms(A2grade)or

64 ms (commercial, industrial, A1 grade)

• Randomcolumnaddresseveryclockcycle

• ProgrammableCAS latency (2, 3 clocks)

• Burstread/writeandburstread/singlewrite

operations capability

• Burstterminationbyburststopandprecharge

command

OPTIONS

• Package:

54-pinTSOP-II(x8andx16)

54-ballBGA(x16only)

• OperatingTemperatureRange:

OVERVIEW

data transfer using pipeline architecture. All inputs and

outputs signals refer to the rising edge of the clock input.

The256MbSDRAMisorganizedasfollows.

32Meg x 8, 16Meg x16

256-MBIT SYNCHRONOUS DRAM

MARCH 2010

KEY TIMING PARAMETERS

Parameter

-75

Unit

ClkCycleTime

CAS

Latency=3

7.5

ns

CAS

Latency=2

10

ns

ClkFrequency

CAS

Latency=3

133

Mhz

CAS

Latency=2

100

Mhz

AccessTimefromClock

CAS

Latency=3

5.4

ns

CAS

Latency=2

6

ns

IS42/45R83200D IS42/45R16160D

8Mx8x4Banks 4Mx16x4Banks

54-pinTSOPII

54-pinTSOPII

54-ballBGA

Parameter

32M x 8

16M x 16

Configuration

8M x 8 x 4

banks

4M x 16 x 4

banks

Refresh Count

Com./Ind.

A1

A2

8K/64ms

8K/64ms

8K/16ms

8K/64ms

8K/64ms

8K/16ms

Row Addresses

A0-A12

A0-A12

Column Addresses

A0-A9

A0-A8

Bank Address Pins

BA0, BA1

BA0, BA1

Auto Precharge Pins

A10/AP

A10/AP

ADDRESS TABLE