HD6433682 ETC, HD6433682 Datasheet - Page 143
HD6433682
Manufacturer Part Number
HD6433682
Description
Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
Manufacturer
ETC
Datasheet
1.HD6433682.pdf
(504 pages)
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9.2
Port 2 is a general I/O port also functioning as SCI3 I/O pins. Each pin of the port 2 is shown in
figure 9.2. The register settings of PMR1and SCI3 have priority for functions of the pins for both
uses.
Port 2 has the following registers.
9.2.1
PCR2 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 2.
Bit
7 to 5
4
3
2
1
0
Port control register 2 (PCR2)
Port data register 2 (PDR2)
Port mode register 3 (PMR3)
Bit Name
PCR24
PCR23
PCR22
PCR21
PCR20
Port 2
Port Control Register 2 (PCR2)
Initial
Value
0
0
0
0
0
Figure 9.2 Port 2 Pin Configuration
R/W
W
W
W
W
W
Port 2
Description
Reserved
When each of the port 2 pins P24 to P20 functions as a
general I/O port, setting a PCR2 bit to 1 makes the
corresponding pin an output port, while clearing the bit to
0 makes the pin an input port.
P24
P23
P22/TXD
P21/RXD
P20/SCK3
Rev. 3.00, 05/03, page 113 of 472
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