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IC41C1664 Datasheet, PDF (2/21 Pages) Integrated Circuit Solution Inc – 64K x 16 bit Dynamic RAM with EDO Page Mode
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IC41C1664
IC41LV1664
64K x 16 (1-MBIT) DYNAMIC RAM
WITH EDO PAGE MODE
FEATURES
• Extended Data-Out (EDO) Page Mode access cycle
• TTL compatible inputs and outputs; tristate I/O
• Refresh Interval: 256 cycles /4 ms
• Refresh Mode: RAS-Only, CAS-before-RAS (CBR),
Hidden
• Single power supply:
5V ± 10% (IC41C1664)
3.3V ± 10% (IC41LV1664)
• Byte Write and Byte Read operation via two CAS
• Industrail Temperature Range -40oC to 85oC
DESCRIPTION
The ICSI IC41C1664 and IC41LV1664 is a 65,536 x 16-bit high-
performance CMOS Dynamic Random Access Memories. The
IC41C1664 offer an accelerated cycle access called EDO Page
Mode. EDO Page Mode allows 256 random accesses within a
single row with access cycle time as short as 10 ns per 16-bit
word. The Byte Write control, of upper and lower byte, makes
the IC41C1664 ideal for use in 16-, 32-bit wide data bus
systems.
These features make the IC41C1664 and IC41LV1664 ideally
suited for high-bandwidth graphics, digital signal processing,
high-performance computing systems, and peripheral
applications.
KEY TIMING PARAMETERS
Parameter
Max. RAS Access Time (tRAC)
Max. CAS Access Time (tCAC)
Max. Column Address Access Time (tAA)
Min. EDO Page Mode Cycle Time (tPC)
Min. Read/Write Cycle Time (tRC)
The IC41C1664 is packaged in a 40-pin 400mil SOJ and 400mil
TSOP-2.
-25
-30
-35
-40
Unit
25
30
35
40
ns
8
9
10
11
ns
12
16
18
20
ns
15
20
23
25
ns
43
55
65
75
ns
PIN CONFIGURATIONS
40-Pin TSOP-2
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
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
NC 11
NC 12
WE 13
RAS 14
NC 15
A0 16
A1 17
A2 18
A3 19
VCC 20
30 NC
29 LCAS
28 UCAS
27 OE
26 A8
25 A7
24 A6
23 A5
22 A4
21 GND
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
PIN DESCRIPTIONS
A0-A7
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
2
Integrated Circuit Solution Inc.
DR033-0A 11/15/2001
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