HD6432621 Hitachi, HD6432621 Datasheet - Page 281

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

Pin
PA2/A18/RxD2
PA1/A17/TxD2
Selection Method and Pin Functions
The pin function is switched as shown below according to the operating mode,
bits AE3 to AE0 in PFCR, bit RE in SCR of SCI2, and bit PA2DDR.
The pin function is switched as shown below according to the operating mode,
bits AE3 to AE0 in PFCR, bit TE in SCR of SCI2, and bit PA1DDR.
Operating mode
AE3 to AE0
RE
PA2DDR
Pin function
Operating mode
RE
PA2DDR
Pin function
Operating mode
AE3 to AE0
TE
PA1DDR
Pin function
Operating mode
TE
PA1DDR
Pin function
PA2 input
PA1 input
PA2 input
PA1 input
0
0
0
0
B'0000 to B'1011
B'0000 to B'1001
0
0
PA2 output
PA1 output
0
0
1
1
Modes 4 to 6
Modes 4 to 6
PA2 output
PA1 output
Mode 7
Mode 7
TxD2 output
1
1
RxD2 input
—
—
1
1
B'1011 to B'1111
B'1010 to B'1111
TxD2 output
RxD2 input
A18 output
A17 output
—
—
1
1
—
—
—
—
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