IS41C16256 Datasheet, PDF (1/19 Pages) Integrated Silicon Solution, Inc – 256K x 16 (4-MBIT) DYNAMIC RAM WITH EDO PAGE MODE

IS41C16256
IS41LV16256
256K x 16 (4-MBIT) DYNAMIC RAM
WITH EDO PAGE MODE
ISSI^®
JUNE 2000
FEATURES
• TTL compatible inputs and outputs
• Refresh Interval: 512 cycles/8 ms
• Refresh Mode : RAS-Only, CAS-before-RAS
(CBR), and Hidden
• JEDEC standard pinout
• Single power supply
5V ± 10% (IS41C16256)
3.3V ± 10% (IS41LV16256)
• Byte Write and Byte Read operation via two CAS
• Extended Temperature Range -30^oC to 85^oC
• Industrail Temperature Range -40^oC to 85^oC
DESCRIPTION
The ISSI IS41C16256 and IS41LV16256 are 262,144 x 16-bit
high-performanceCMOSDynamicRandomAccessMemory. 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 16-bit word. The Byte Write
control, of upper and lower byte, makes the IS41C16256 and
IS41LV16256 ideal for use in 16 and 32-bit wide data bus systems.
These features make the IS41C16256 and IS41LV1626 ideally
suited for high band-width graphics, digital signal processing,
high-performance computing systems, and peripheral applications.
The IS41C16256 and IS41LV16256 are packaged in 40-pin
400-mil SOJ and TSOP (Type II).
KEY TIMING PARAMETERS
Parameter
-35
-50
-60
Unit
Max. RAS Access Time (tRAC)
35
50
60
ns
Max. CAS Access Time (tCAC)
10
14
15
ns
Max. Column Address Access Time (tAA)
18
25
30
ns
Min. EDO Page Mode Cycle Time (tPC)
12
20
25
ns
Min. Read/Write Cycle Time (tRC)
60
90
110
ns
PIN CONFIGURATIONS
40-Pin TSOP (Type II)
40-Pin SOJ
VCC 1
I/O0 2
I/O1 3
I/O2 4
I/O3 5
VCC 6
I/O4 7
I/O5 8
I/O6 9
I/O7 10
NC 11
NC 12
WE 13
RAS 14
NC 15
A0 16
A1 17
A2 18
A3 19
VCC 20
40 GND
39 I/O15
38 I/O14
37 I/O13
36 I/O12
35 GND
34 I/O11
33 I/O10
32 I/O9
31 I/O8
30 NC
29 LCAS
28 UCAS
27 OE
26 A8
25 A7
24 A6
23 A5
22 A4
21 GND
VCC 1
I/O0 2
I/O1 3
I/O2 4
I/O3 5
VCC 6
I/O4 7
I/O5 8
I/O6 9
I/O7 10
NC 11
NC 12
WE 13
RAS 14
NC 15
A0 16
A1 17
A2 18
A3 19
VCC 20
40 GND
39 I/O15
38 I/O14
37 I/O13
36 I/O12
35 GND
34 I/O11
33 I/O10
32 I/O9
31 I/O8
30 NC
29 LCAS
28 UCAS
27 OE
26 A8
25 A7
24 A6
23 A5
22 A4
21 GND
PIN DESCRIPTIONS
A0-A8
I/O0-15
WE
OE
RAS
UCAS
LCAS
Vcc
GND
NC
Address Inputs
Data Inputs/Outputs
Write Enable
Output Enable
Row Address Strobe
Upper Column Address Strobe
Lower Column Address Strobe
Power
Ground
No Connection
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 2000, Integrated Silicon Solution, Inc.
Integrated Silicon Solution, Inc. — 1-800-379-4774
1
Rev. J
06/29/00