IS41C85125 Datasheet, PDF (1/16 Pages) Integrated Silicon Solution, Inc – 512K x 8 (4-MBIT) DYNAMIC RAM WITH FAST PAGE MODE

IS41C85125
IS41LV85125
512K x 8 (4-MBIT) DYNAMIC RAM
WITH FAST PAGE MODE
ISSI ^®
PRELIMINARY INFORMATION
AUGUST 2001
FEATURES
• Fast access and cycle time
• TTL compatible inputs and outputs
• Refresh Interval: 1024 cycles/16 ms
• Refresh Mode: RAS-Only, CAS-before-RAS
(CBR), and Hidden
• JEDEC standard pinout
• Single power supply:
-- 5V ± 10% (IS41C85125)
-- 3.3V ± 10% (IS41LV85125)
• Industrial temperature available
DESCRIPTION
The ISSI IS41C85125 and IS41LV85125 are 512,288 x 8-bit
high-performance CMOS Dynamic Random Access
Memories. Fast Page Mode allows 1024 random accesses
within a single row with access cycle time as short as 12
ns per 8-bit word.
These features make the IS41C85125 and the IS41LV85125
ideally suited for high band-width graphics, digital signal
processing, high-performance computing systems, and
peripheral applications.
The IS41C85125 and IS41LV85125 are available in a
28-pin, 400-mil SOJ package.
KEY TIMING PARAMETERS
Parameter
-35
Max. RAS Access Time (tRAC)
35
Max. CAS Access Time (tCAC)
10
Max. Column Address Access Time (tAA) 18
Min. Fast Page Mode Cycle Time (tPC) 12
Min. Read/Write Cycle Time (tRC)
60
-60 Unit
60 ns
15 ns
30 ns
25 ns
110 ns
PIN DESCRIPTIONS
A0-A9
I/O0-I/O7
WE
OE
RAS
CAS
VCC
GND
NC
Address Inputs
Data Inputs/Outputs
Write Enable
Output Enable
Row Address Strobe
Column Address Strobe
Power
Ground
No Connection
PIN CONFIGURATION
28-Pin SOJ
VCC 1
I/O0 2
I/O1 3
I/O2 4
I/O3 5
NC 6
WE 7
RAS 8
A9 9
A0 10
A1 11
A2 12
A3 13
VCC 14
28 GND
27 I/O7
26 I/O6
25 I/O5
24 I/O4
23 CAS
22 OE
21 NC
20 A8
19 A7
18 A6
17 A5
16 A4
15 GND
This document contains PRELIMINARY INFORMATION data. ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the
best possible product. We assume no responsibility for any errors which may appear in this publication. © Copyright 2001, Integrated Silicon Solution, Inc.
Integrated Silicon Solution, Inc. — 1-800-379-4774
1
PRELIMINARY INFORMATION Rev. 00A
09/25/01