HD6432621 Hitachi, HD6432621 Datasheet - Page 301

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

9.7.3
Port C pins also function as SCI I/O pins (TxD0, RxD0, SCK0, TxD1, RxD1, and SCK1),
interrupt input pins (IRQ4 and IRQ5), and address bus outputs. The pin functions differ between
modes 4 and 5, mode 6, and mode 7. Port C pin functions are shown in table 9-13.
Table 9-13 Port C Pin Functions
Pin
PC7/A7
PC6/A6
Pin Functions
Selection Method and Pin Functions
The pin function is switched as shown below according to the operating mode
and bit PC7DDR.
The pin function is switched as shown below according to the operating mode
and bit PC6DDR.
Operating
Mode
PC7DDR
Pin function
Operating
Mode
PC6DDR
Pin function
Modes 4
Modes 4
output
output
and 5
and 5
A7
A6
—
—
input
input
PC7
PC6
0
0
Mode 6
Mode 6
output
output
A7
A6
1
1
input
input
PC7
PC6
0
0
Mode 7
Mode 7
output
output
PC7
PC6
1
1
257