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XL-SV205GD
U2: C16256 (4MB DRAM)
Block diagram
Pin configuration
1-10
Pin description
Pin No.
Pin Name
16~19,22~26
A0-A8
14
RAS
28
CASH
29
CASL
13
WE
27
OE
2~5,6~10,
I/O1 - I/O16 Input/Output Data input/
31~34,36~39
1,6,20
Vcc
21, 35, 40
Vss
11,12,15,30
NC
Type
Description
Input
Address input
Input
Row address
strobe
Input
Column address
strobe/Upper
byte control
Input
Column address
strobe/lower
byte control
Input
Write enable
Input
Output enable
output
Supply
Power, 5V
Ground
Ground
-
No connect
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