IS41C4405X Datasheet, PDF (1/17 Pages) Integrated Silicon Solution, Inc – 4M x 4 (16-MBIT) DYNAMIC RAM WITH FAST PAGE MODE

IS41C4405X
IS41LV4405X SERIES
4M x 4 (16-MBIT) DYNAMIC RAM
WITH FAST PAGE MODE
ISSI^®
JUNE 2001
FEATURES
• Fast Page Mode Access Cycle
• TTL compatible inputs and outputs
• Refresh Interval:
-- 2,048 cycles/32 ms
-- 4,096 cycles/64 ms
• Refresh Mode: RAS-Only,
CAS-before-RAS (CBR), and Hidden
• Single power supply:
5V±10% or 3.3V ± 10%
• Byte Write and Byte Read operation via two CAS
• Industrial temperature range -40°C to 85°C
DESCRIPTION
The ISSI 4405x Series is a 4,194,304 x 4-bit high-performance
CMOS Dynamic Random Access Memory. The Fast
Page Mode allows 2,048 or 4096 random accesses within
a single row with access cycle time as short as 20 ns per
4-bit word.
These features make the 4405x Series ideally suited for
high-bandwidth graphics, digital signal processing,
high-performance computing systems, and peripheral
applications.
The 4405x Series is packaged in a 24-pin 300-mil SOJ
with JEDEC standard pinouts.
PRODUCT SERIES OVERVIEW
Part No.
IS41C44052
IS41C44054
IS41LV44052
IS41LV44054
Refresh
2K
4K
2K
4K
Voltage
5V ± 10%
5V ± 10%
3.3V ± 10%
3.3V ± 10%
KEY TIMING PARAMETERS
Parameter
-50 -60 Unit
RAS Access Time (tRAC)
50 60 ns
CAS Access Time (tCAC)
13 15 ns
Column Address Access Time (tAA) 25 30 ns
Fast Page Mode Cycle Time (tPC)
20 25 ns
Read/Write Cycle Time (tRC)
84 104 ns
PIN CONFIGURATION
24 (26) Pin SOJ
VCC 1
I/O0 2
I/O1 3
WE 4
RAS 5
*A11(NC) 6
A10 7
A0 8
A1 9
A2 10
A3 11
VCC 12
24 GND
23 I/O3
22 I/O2
21 CAS
20 OE
19 A9
18 A8
17 A7
16 A6
15 A5
14 A4
13 GND
PIN DESCRIPTIONS
A0-A11
A0-A10
I/O0-3
WE
OE
RAS
CAS
Vcc
GND
NC
Address Inputs (4K Refresh)
Address Inputs (2K Refresh)
Data Inputs/Outputs
Write Enable
Output Enable
Row Address Strobe
Column Address Strobe
Power
Ground
No Connection
* A11 is NC for 2K Refresh devices.
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
Rev. C
06/24/01