Sony DPS-V55 Service Manual page 23

Pin No. Pin Name
73 RS
74 R/W
75 E
76
—
77 RSTX
78 WR
79 RD
80
—
81 VSS
82
X0
83
X1
84 VCC
85 to 92
D00 to D07
93 to 100
P10 to P17
I/O
O
Register selection signal output to the LCD module (LCD801)
O
Data read/write selection signal output to the LCD module (LCD801)
O
Enable signal output to the LCD module (LCD801)
O
Not used (open)
I Reset signal input terminal "L": reset
O
Write strobe signal output to the static RAM (IC702)
O
Read strobe signal output to the static RAM (IC702) and EP-ROM (IC704)
O
Not used (open)
— Ground terminal
I
System clock input terminal (4 MHz)
O
System clock output terminal (4 MHz)
— Power supply terminal (+5V)
I/O
Two-way data bus with the static RAM (IC702) and EP-ROM (IC704)
I/O
Two-way data bus with the LCD module (LCD801)
Function
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