IS42S16800E View Datasheet(PDF) - Integrated Silicon Solution

Part Name

Description

Manufacturer

IS42S16800E

16M x 8, 8M x16 128Mb SYNCHRONOUS DRAM

Integrated Silicon Solution 

IS42S81600E

IS42S16800E

16M x 8, 8M x16

128Mb SYNCHRONOUS DRAM

JUNE 2009

FEATURES

• Clock frequency: 200, 166, 143, 133 MHz

• Fully synchronous; all signals referenced to a

positive clock edge

• Internal bank for hiding row access/precharge

• Power supply

IS42S81600E

Vdd Vddq

3.3V 3.3V

IS42S16800E

3.3V 3.3V

• LVTTL interface

• Programmable burst length

– (1, 2, 4, 8, full page)

• Programmable burst sequence:

Sequential/Interleave

• Auto Refresh (CBR)

• Self Refresh

• 4096 refresh cycles every 64 ms

• Random column address every clock cycle

• Programmable CAS latency (2, 3 clocks)

• Burst read/write and burst read/single write

operations capability

• Burst termination by burst stop and precharge

command

• Industrial Temperature Availability

OVERVIEW

ISSI's 128Mb Synchronous DRAM achieves high-speed

data transfer using pipeline architecture. All inputs and

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

The 128Mb SDRAM is organized as follows.

IS42S81600E IS42S16800E

4M x8 x4 Banks 2M x16 x4 Banks

54-pin TSOPII 54-pin TSOPII

54-ball TF-BGA

KEY TIMING PARAMETERS

Parameter

-5 -6 -7

Clk Cycle Time

CAS Latency = 3

CAS Latency = 2

567

10 10 10

Clk Frequency

CAS Latency = 3

CAS Latency = 2

200 166 143

100 100 100

Access Time from Clock

CAS Latency = 3

5.0 5.4 5.4

CAS Latency = 2

6.5 6.5 6.5

-75E Unit

— ns

7.5 ns

— Mhz

133 Mhz

— ns

5.5 ns

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.

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

1

Rev. B

05/27/09

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