ic41c1625 Integrated Silicon Solution, Inc., ic41c1625 Datasheet - Page 2

• Manufacturer Part Number: ic41c1625
• Description: 256k 4-mbit Dynamic With Fast Page Mode
• Manufacturer: Integrated Silicon Solution, Inc.

IC41C16257/IC41C16257S
IC41LV16257/IC41LV16257S
FEATURES
• Fast access and cycle time
• TTL compatible inputs and outputs
• Refresh Interval: 512 cycles/8 ms
• Refresh Mode: RAS-Only, CAS-before-RAS
• Self Refresh Mode: 512 cycles/64 ms (S version
• JEDEC standard pinout
• Single power supply:
• Byte Write and Byte Read operation via
• Available in 40-pin SOJ and TSOP-2
256K x 16 (4-MBIT) DYNAMIC RAM
WITH FAST PAGE MODE
2
PIN CONFIGURATIONS
40-Pin TSOP-2
ICSI 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 Circuit Solution Inc.
(CBR), Hidden
only)
— 5V ± 10% (IC41C16257)
— 3.3V ± 10% (IC41LV16257)
two CAS
40-Pin SOJ
KEY TIMING PARAMETERS
Parameter
Max. RAS Access Time (t
Max. CAS Access Time (t
Max. Column Address Access Time (t
Min. Fast Page Mode Cycle Time (t
Min. Read/Write Cycle Time (t
DESCRIPTION
The
x 16-bit high-performance CMOS Dynamic Random Access
Memory. Fast Page Mode allows 512 random accesses
within a single row with access cycle time as short as 12 ns
per 16-bit word. The Byte Write control, of upper and lower
byte, makes these devices ideal for use in 16-, 32-bit wide
data bus systems.
These features make the IC41C16257 and the IC41LV16257
ideally suited for high band-width graphics, digital signal
processing, high-performance computing systems, and
peripheral applications.
The IC41C16257 and the IC41LV16257 are packaged in a
40-pin, 400mil SOJ and TSOP-2.
ICSI
IC41C16257 and the IC41LV16257 are 262,144
PIN DESCRIPTIONS
A0-A8
I/O0-I/O15
WE
OE
RAS
UCAS
LCAS
Vcc
GND
NC
RAC
CAC
)
)
RC
)
PC
Integrated Circuit Solution Inc.
)
AA
)
Address Inputs
Data Inputs/Outputs
Write Enable
Output Enable
Row Address Strobe
Upper Column Address
Strobe
Lower Column Address
Strobe
Power
Ground
No Connection
-35
35
10
18
12
60
DR021-0A 08/11/2001
-50
50
14
25
20
90
110
-60
60
15
30
25
Unit
ns
ns
ns
ns
ns