HD643303x Hitachi, HD643303x Datasheet - Page 27

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Table 1-3 Pin Functions (cont)
Type
Serial com-
munication
interface (SCI)
A/D
converter
I/O ports
Symbol
TxD
RxD
SCK
AN
ADTRG
AV
AV
V
P1
P2
P3
P5
P6
P6
P7
P8
REF
7
7
7
3
5
0
7
3
CC
SS
7
to P1
to P2
to P3
to P5
to P6
to P7
to P8
to AN
0
0
0
0
3
0
0
0
, 56 to 54,
Pin No.
9
10
11
66 to 59
8
68
58
67
29 to 22
38 to 31
20 to 13
42 to 39
43
66 to 59
72 to 69
I/O
Output Transmit data: SCI data output
Input
Input/
output
Input
Input
Input
Input
Input
Input/
output
Input/
output
Input/
output
Input/
output
Input/
output
Input
Input/
output
12
Name and Function
Receive data: SCI data input
Serial clock: SCI clock input/output
Analog 7 to 0: Analog input pins
A/D trigger: External trigger input for starting
A/D conversion
Power supply pin for the A/D converter.
Connect to the system power supply (+5 V)
when not using the A/D converter.
Ground pin for the A/D converter. Connect to
system ground (0 V) when not using the A/D
converter.
Reference voltage input pin for the A/D
converter. Connect to the system power supply
(+5 V) when not using the A/D converter.
Port 1: Eight input/output pins. The direction
of each pin can be selected in the port 1 data
direction register (P1DDR).
Port 2: Eight input/output pins. The direction
of each pin can be selected in the port 2 data
direction register (P2DDR).
Port 3: Eight input/output pins. The direction
of each pin can be selected in the port 3 data
direction register (P3DDR).
Port 5: Four input/output pins. The direction of
each pin can be selected in the port 5 data
direction register (P5DDR).
Port 6: Four input/output pins. The direction
of each pin can be selected in the port 6 data
direction register (P6DDR).
Port 7: Eight input pins
Port 8: Four input/output pins. The direction of
each pin can be selected in the port 8 data
direction register (P8DDR).