HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 42

• Manufacturer Part Number: HD6435348R
• Description: Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

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