HD6432621 Hitachi, HD6432621 Datasheet - Page 303

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

Pin
PC4/A4/RxD1
PC3/A3/TxD1
Selection Method and Pin Functions
The pin function is switched as shown below according to the operating mode,
bit RE in the SCI1’s SCR, and bit PC4DDR.
The pin function is switched as shown below according to the operating mode,
bit TE in the SCI1’s SCR, and bit PC3DDR.
Operating
Mode
PC4DDR
RE
Pin function
Operating
Mode
RE
PC4DDR
Pin function
Operating
Mode
PC3DDR
TE
Pin function
Operating
Mode
TE
PC3DDR
Pin function
A4 output
A3 output
Modes 4
Modes 4
and 5
and 5
PC4 input
PC3 input
—
—
—
—
0
0
PC4 input
PC3 input
0
0
0
0
PC4 output
PC3 output
Mode 7
Mode 7
1
1
0
0
TxD1 output
RxD1 input
Mode 6
Mode 6
1
1
TxD1 output
RxD1 input
A4 output
A3 output
—
—
1
1
—
—
1
1
259