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No. 5761-6/21
LC74201JE
Pin No.
Symbol
I/O
Logic
Function
26
RY5
I/O
Positive
Video signal outputs (R/Y signals). (Normally in output mode.)
25
RY4
I/O
Positive
28
RY7 (MSB)
I/O
Positive
27
RY6
I/O
Positive
Horizontal synchronization signal output. Tristate output using DVDD2 (5-V) power supply.
Composite synchronization signal output. Tristate output using DVDD2 (5-V) power supply.
Blanking signal output (horizontal and vertical blanking interval signal). Tristate output using DVDD2 (5-V)
power supply.
Tristate output using DVDD2 (5-V) power supply.
30
HSYNC
Out
Negative
32
BLANK
Out
Positive
31
CSYNC
Out
Negative
35
VOE
In
Positive
Video output enable signal input. High: Enable output.
87
DD15 (MSB)
I/O
Positive
89
DD13
I/O
Positive
Data I/O interface with DRAM.
Tristate output using DVDD2 (5-V) power supply.
Row address strobe signal output to expansion 1-Mbit DRAM.
Tristate output using DVDD2 (5-V) power supply.
Row address strobe signal output to 4-Mbit DRAM.
Tristate output using DVDD2 (5-V) power supply.
Write enable signal output to DRAM. Tristate output using DVDD2 (5-V) power supply.
Column address strobe signal output to DRAM. N-channel open-drain output.
88
DD14
I/O
Positive
91
DD11
I/O
Positive
90
DD12
I/O
Positive
92
DD10
I/O
Positive
94
DD8
I/O
Positive
93
DD9
I/O
Positive
96
DD6
I/O
Positive
95
DD7
I/O
Positive
99
DD5
I/O
Positive
101
DD3
I/O
Positive
100
DD4
I/O
Positive
103
DD1
I/O
Positive
102
DD2
I/O
Positive
104
DD0 (LSB)
I/O
Positive
107
RAS0
Out
Negative
106
RAS1
Out
Negative
111
CAS
Out
Negative
109
WE
Out
Negative
Output enable signal output to DRAM. Tristate output using DVDD2 (5-V) power supply.
113
OE
Out
Negative
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