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IS41C16257-35K Ver la hoja de datos (PDF) - Integrated Silicon Solution
Número de pieza
componentes Descripción
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IS41C16257-35K
256K x 16 (4-MBIT) DYNAMIC RAM WITH FAST PAGE MODE
Integrated Silicon Solution
IS41C16257-35K Datasheet PDF : 17 Pages
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IS41C16257
IS41LV16257
FUNCTIONAL BLOCK DIAGRAM
OE
WE
LCAS
UCAS
CAS
CLOCK
GENERATOR
CAS
WE
CONTROL
LOGICS
WE
OE
CONTROL
LOGIC
RAS
RAS
CLOCK
GENERATOR
REFRESH
COUNTER
DATA I/O BUS
COLUMN DECODERS
SENSE AMPLIFIERS
A0-A8
ADDRESS
BUFFERS
MEMORY ARRAY
262,144 x 16
ISSI
®
I/O0-I/O15
PIN CONFIGURATIONS
40-Pin TSOP (Type II)
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-A8
I/O0-I/O15
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 Silicon Solution, Inc. — 1-800-379-4774
DR004-1B
05/24/99
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