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Número de pieza
componentes Descripción
LH6V4256K-10 Ver la hoja de datos (PDF) - Sharp Electronics
Número de pieza
componentes Descripción
Fabricante
LH6V4256K-10
CMOS 1M(256K x 4) dynamic RAM
Sharp Electronics
LH6V4256K-10 Datasheet PDF : 18 Pages
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LH6V4256
CMOS 1M (256K
×
4) Dynamic RAM
OE 16
OE CLOCK
GENERATOR
WE 3
R/W CLOCK
GENERATOR
CAS 17
CAS CLOCK
GENERATOR
I/O
1
I/O
2
I/O
3
I/O
4
1
2
18 19
DATA IN
BUFFER
DATA OUT
BUFFER
V
BB
GENERATOR
10 V
CC
20 V
SS
RAS 4
RAS CLOCK
GENERATOR
MEMORY
ARRAY
1,048,576 BITS
ROW
ADDRESS
COUNTER
REFRESH
CONTROL
ADDRESS
BUFFER
ROW
DECODER
6
7
8
9
A
0
A
1
A
2
A
3
NOTE:
Pin numbers apply to the 20-pin DIP.
11 12
13
A
4
A
5
A
6
14 15
A
7
A
8
Figure 4. LH6V4256 Block Diagram
6V4256-4
PIN DESCRIPTION
PIN NAME
A
0
– A
8
RAS
CAS
WE
OE
FUNCTION
Address input
Row address strobe
Column address strobe
Write enable
Output enable
PIN NAME
I/O
1
– I/O
4
V
CC
V
SS
NC
FUNCTION
Data input/output
Power supply (+3.3 V)
Power supply (0 V)
No connection
2-16
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