IS41LV44052B Datasheet, PDF (1/17 Pages) Integrated Silicon Solution, Inc – Fast Page Mode Access Cycle

IS41LV44052B
4M x 4 (16-MBIT) DYNAMIC RAM
WITH FAST PAGE MODE
JANUARY 2010
FEATURES
• Fast 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 viatwo CAS
• Industrial temperature range -40°C to 85°C
DESCRIPTION
The ISSI IS41LV44052B is a 4,194,304 x 4-bit high-performance
CMOSDynamic 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 IS41LV44052B ideally suited
for high-bandwidth graphics, digital signal processing,
high-performance computing systems, and peripheral
applications.
The IS41LV44052B is packaged in a 24-pin TSOP-II with
JEDEC standard pinouts.
PRODUCT SERIES OVERVIEW
Part No.
IS41LV44052B
Refresh
2K
Voltage
3.3V ± 10%
KEY TIMING PARAMETERS
Parameter
-50
RAS Access Time (trac)
50
CAS Access Time (tcac)
13
Column Address Access Time (taa) 25
Fast Page Mode Cycle Time (tpc) 20
Read/Write Cycle Time (trc)
84
-60 Unit
60 ns
15 ns
30 ns
25 ns
104 ns
PIN CONFIGURATION
24 (26) Pin TSOP-II
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-A10
Address Inputs (2K Refresh)
I/O0-3
Data Inputs/Outputs
WE
Write Enable
OE
Output Enable
RAS
Row Address Strobe
CAS
Column Address Strobe
Vcc
Power
GND
Ground
NC
No Connection
* A11 is NC for 2K Refresh devices.
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 lat-
est 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.  C
12/21/09