Table 1-4 Pin Functions (cont)
Pin No.
CP-84,
CG-84
80
77
81
78
82
79
FP-80A,
TFP-80C I/O Name and Function
66
O
Transmit Data:
Data output pins for serial
63
communication interfaces 1 and 2.
67
I
Receive Data:
Data input pins for serial
64
communication interfaces 1 and 2.
68
I/O
Serial Clock:
Input/output pins for the serial
65
clock of serial interface 1 and 2.
59 – 52
I
Analog Input:
Analog signal input pins.
Type
Serial com- TXD
1
munication
interface
signals
Symbol
TXD
2
RXD
1
RXD
2
SCK
1
SCK
2
AN
7
– AN
0
73 – 66
A/D
converter
AV
CC
74
60
I
Analog Reference Voltage:
Reference voltage
and power supply pin for the A/D converter.
Analog Ground:
Ground pin for the A/D
converter.
External Trigger:
External trigger input pin
for the A/D converter.
I/O
Port 1:
An 8-bit input/output port. The
direction of each bit is determined by the port 1
data direction register (P1DDR).
I/O
Port 2:
A 5-bit input/output port. The
direction of each bit is determined by the port 2
data direction register (P2DDR).
I/O
Port 3:
An 8-bit input/output port. The
direction of each bit is determined by the port 3
data direction register (P3DDR).
I/O
Port 4:
An 8-bit input/output port. The
direction of each bit is determined by the port 4
data direction register (P4DDR). These pins
can drive LED indicators.
AV
SS
65
51
I
ADTRG
9
78
I
Parallel
I/O
P1
7
– P1
0
10 – 3
79 – 72
P2
4
– P2
0
15 – 11
4 – 1,
80
P3
7
– P3
0
32 – 25
20 – 13
P4
7
– P4
0
40 – 33
28 – 21
21