®
IS42S16800L
IS42S32400L
ISSI
8Meg x16 & 4Meg x 32 (128-MBIT)
PowerSaver SYNC DYNAMIC RAM
ADVANCEDINFORMATION
SEPTEMBER 2002
OVERVIEW
FEATURES
ISSI's 128Mb Synchronous DRAM IS42S16800L is
organized as 2Meg x16 x 4 banks (8 Meg x16) and the
IS42S32400Lisorganizedas1Megx32x4banks(4Megx
32) . The synchronous DRAMs achieve high-speed data
transfer using pipeline architecture. All inputs and outputs
signals refer to the rising edge of the clock input.
• Clock frequency: 143, 100, MHz
• Fully synchronous; all signals referenced to a
positive clock edge
• Internal bank for hiding row access/precharge
• Power supply
VDD = 2.5V/ +/-10%
VDDq= 1.8V (2.5V tolerant)
• LVTTL interface
Package:
54-Ball FBGA for x16
54 Pin TSOPII for x16
90-Ball FBGA for x32
86-Pin TSOPII for x32
• Programmable burst length
– (1, 2, 4, 8, full page)
• Programmable burst sequence:
Sequential/Interleave
• Extended Mode Register
• Programmable Power Reduction Feature by
partial array activation during Self-Refresh
KEY TIMING PARAMETERS
• Auto Refresh (CBR)
• Temp. Compensated Self Refresh.
• Self Refresh with programmable refresh periods
• 4096 refresh cycles every 64 ms
Parameter
-7
-10 Unit
Clk Cycle Time
CAS Latency = 3
CAS Latency = 2
7
10
10
10
ns
ns
• Random column address every clock cycle
• Programmable CAS latency (2, 3 clocks)
Clk Frequency
CAS Latency = 3
CAS Latency = 2
143
100
100
100
Mhz
Mhz
• Burst read/write and burst read/single write
operations capability
Access Time from Clock
CAS Latency = 3
5.4
6
7
9
ns
ns
• Burst termination by burst stop and precharge
command
CAS Latency = 2
Row to Column Delay Time (tRCD)
Row Precharge Tim (tRP)
15
15
18
18
ns
ns
• Industrial Temperature Availability
• Bare and Known Good Die
Copyright © 2002 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any
time without 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 — 1-800-379-4774
Rev. 00B
1
09/24/02