IS45LV44002B Datasheet, PDF (1/20 Pages) Integrated Silicon Solution, Inc – 4M x 4 (16-MBIT) DYNAMIC RAM WITH EDO PAGE MODE

IS45LV44002B
4M x 4 (16-MBIT) DYNAMIC RAM
WITH EDO PAGE MODE
ISSI^®
SEPTEMBER 2005
FEATURES
• Extended Data-Out (EDO) Page Mode access cycle
• TTL compatible inputs and outputs
• Refresh Interval:
– 2,048 cycles/32 ms
• Refresh Mode: RAS-Only,
CAS-before-RAS (CBR), and Hidden
• Single power supply: 3.3V ± 10%
• Byte Write and Byte Read operation via two CAS
• Automotive Temperature Range
Option A1: -40°C to +85°C
• Lead-free available
DESCRIPTION
The ISSI IS45LV44002B is 4,194,304 x 4-bit high-performance
CMOS Dynamic Random Access Memory. These de-
vices offer an accelerated cycle access called EDO Page
Mode. EDO Page Mode allows 2,048 random accesses
within a single row with access cycle time as short as 20 ns
per 4-bit word.
These features make the IS45LV44002B ideally suited for
high-bandwidth graphics, digital signal processing, high-
performance computing systems, and peripheral
applications.
The IS45LV44002B is packaged in a 24-pin 300-mil SOJ
with JEDEC standard pinouts.
PRODUCT SERIES OVERVIEW
Part No.
IS45LV44002B
Refresh
2K
Voltage
3.3V ± 10%
PIN CONFIGURATION: 24-pin SOJ
VDD 1
I/O0 2
I/O1 3
WE 4
RAS 5
NC 6
A10 7
A0 8
A1 9
A2 10
A3 11
VDD 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
KEY TIMING PARAMETERS
Parameter
-50
Unit
RAS Access Time (tRAC)
CAS Access Time (tCAC)
50
ns
13
ns
Column Address Access Time (tAA)
25
ns
EDO Page Mode Cycle Time (tPC)
20
ns
Read/Write Cycle Time (tRC)
84
ns
PIN DESCRIPTIONS
A0-A10
I/O0-3
WE
OE
RAS
CAS
VDD
GND
NC
Address Inputs
Data Inputs/Outputs
Write Enable
Output Enable
Row Address Strobe
Column Address Strobe
Power
Ground
No Connection
Copyright © 2005 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. — 1-800-379-4774
1
Rev. A
09/12/05