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HD64F36022 Datasheet(PDF) 138 Page - Renesas Technology Corp

Part # HD64F36022
Description  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
PDF  384 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD64F36022 Datasheet(HTML) 138 Page - Renesas Technology Corp

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Section 9 I/O Ports
Rev. 4.00 Sep. 23, 2005 Page 112 of 354
REJ09B0025-0400
9.5
Port 8
Port 8 is a general I/O port also functioning as a timer W I/O pin. Each pin of the port 8 is shown
in figure 9.5. The register setting of the timer W has priority for functions of the pins P84/FTIOD,
P83/FTIOC, P82/FTIOB, and P81/FTIOA. The P80/FTCI pin also functions as a timer W input
port that is connected to the timer W regardless of the register setting of port 8.
P84/FTIOD
P83/FTIOC
P82/FTIOB
P81/FTIOA
P80/FTCI
Port 8
Figure 9.5 Port 8 Pin Configuration
Port 8 has the following registers.
• Port control register 8 (PCR8)
• Port data register 8 (PDR8)
9.5.1
Port Control Register 8 (PCR8)
PCR8 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 8.
Bit
Bit Name
Initial
Value
R/W
Description
7 to 5
Reserved
4
3
2
1
0
PCR84
PCR83
PCR82
PCR81
PCR80
0
0
0
0
0
W
W
W
W
W
When each of the port 8 pins P84 to P80 functions as an
general I/O port, setting a PCR8 bit to 1 makes the
corresponding pin an output port, while clearing the bit to
0 makes the pin an input port.



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