®
IS41C85120
IS41LV85120
ISSI
512K x 8 (4-MBIT) DYNAMIC RAM
WITH EDO PAGE MODE
PRELIMINARY INFORMATION
SEPTEMBER 2001
FEATURES
DESCRIPTION
• TTL compatible inputs and outputs
• Refresh Interval: 1024 cycles/16 ms
The ISSI IS41C85120 and IS41LV85120 are 524,288 x 8-bit
high-performance CMOS Dynamic Random Access
Memory. Both products offer accelerated cycle access EDO
Page Mode. EDO Page Mode allows 512 random accesses
within a single row with access cycle time as short as 10ns per
8-bit word. The Byte Write control, of upper and lower byte,
makes the IS41C85120 and IS41LV85120 ideal for use in 16
and 32-bit wide data bus systems.
• Refresh Mode : RAS-Only, CAS-before-RAS
(CBR), and Hidden
• JEDEC standard pinout
• Single power supply
5V ± 10% (IS41C85120)
3.3V ± 10% (IS41LV85120)
• Industrail Temperature Range -40oC to 85oC
These features make the IS41C85120 and IS41LV85120
ideally suited for high band-width graphics, digital signal
processing, high-performance computing systems, and pe-
ripheral applications.
The IS41C85120 and IS41LV85120 are available in a
28-pin, 400-mil SOJ package.
KEY TIMING PARAMETERS
PIN CONFIGURATION
28-Pin SOJ
Parameter
-35
35
10
18
12
60
-60
60
Unit
ns
Max. RAS Access Time (tRAC)
Max. CAS Access Time (tCAC)
Max. Column Address Access Time (tAA)
Min. Fast Page Mode Cycle Time (tPC)
Min. Read/Write Cycle Time (tRC)
15
ns
30
ns
VCC
I/O0
I/O1
I/O2
I/O3
NC
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
GND
I/O7
I/O6
I/O5
I/O4
CAS
OE
25
ns
2
110
ns
3
4
5
6
PIN DESCRIPTIONS
WE
RAS
A9
7
A0-A9
I/O0-I/O7
WE
Address Inputs
8
NC
Data Inputs/Outputs
Write Enable
9
A8
A0
10
11
12
13
14
A7
A1
A6
OE
Output Enable
Row Address Strobe
Column Address Strobe
Power
A2
A5
RAS
CAS
VCC
A3
A4
VCC
GND
GND
NC
Ground
No Connection
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
PRELIMINARYINFORMATION Rev. 00B
1
09/25/01