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LH52256C Datasheet(PDF) 1 Page - Sharp Electrionic Components

Part No. LH52256C
Description  CMOS 256K (32K x 8) Static RAM
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Maker  SHARP [Sharp Electrionic Components]
Homepage  http://sharp-world.com/
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LH52256C/CH
CMOS 256K (32K
× 8) Static RAM
FEATURES
•• 32,768 × 8 bit organization
•• Access time: 70 ns (MAX.)
•• Supply current:
Operating: 45 mA (MAX.)
10 mA (MAX.) (tRC, tWC = 1 µs)
Standby: 40
µA (MAX.)
•• Data retention current: 1.0 µA (MAX.)
(VCCDR = 3 V, TA = 25°C)
•• Wide operating voltage range:
4.5 V
± 5.5 V
•• Operating temperature:
Commerical temperature 0
°C to +70°C
Industrial temperature -40° to +85°C
•• Fully-static operation
•• Three-state outputs
•• Not designed or rated as radiation
hardened
•• Package:
28-pin, 600-mil DIP
28-pin, 450-mil SOP
28-pin, 300-mil SK-DIP
28-pin, 8
× 3 mm2 TSOP (Type I)
•• N-type bulk silicon
DESCRIPTION
The LH52256C is a Static RAM organized as
32,768
× 8 bits which provides low-power standby
mode. It is fabricated using silicon-gate CMOS process
technology.
PIN CONNECTIONS
52256C-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
WE
A9
A11
OE
A10
I/O6
I/O5
GND
I/O8
I/O7
CE
A13
A8
I/O1
I/O2
I/O3
I/O4
28-PIN DIP
28-PIN SK-DIP
28-PIN SOP
TOP VIEW
Figure 1. Pin Connections
2
3
4
5
6
9
10
7
8
A11
11
1
28
27
26
25
22
21
24
23
20
19
A10
28-PIN TSOP (Type I)
12
13
14
17
16
18
15
OE
A8
A9
A13
WE
A12
A14
I/O3
I/O2
A1
I/O8
CE
I/O6
I/O7
GND
I/O5
I/O4
I/O1
A0
52256C-8
VCC
A7
A6
A5
A4
A3
A2
NOTE: Reverse bend available on request.
Figure 2. TSOP (Type I) Pin Connections
1




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