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H838024 Datasheet(PDF) 256 Page - Renesas Technology Corp

Part # H838024
Description  Renesas 8-Bit Single-Chip Microcomputer Super Low Power Series
PDF  697 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H838024 Datasheet(HTML) 256 Page - Renesas Technology Corp

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Section 8 I/O Ports
Rev. 7.00 Mar 10, 2005 page 214 of 652
REJ09B0042-0700
Port Data Register 5 (PDR5)
Bit
7
65
43
21
0
P57
P56
P55
P54
P53
P52
P51
P50
Initial value
0
0
0
0
0
0
0
0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PDR5 is an 8-bit register that stores data for port 5 pins P57 to P50. If port 5 is read while PCR5
bits are set to 1, the values stored in PDR5 are read, regardless of the actual pin states. If port 5 is
read while PCR5 bits are cleared to 0, the pin states are read.
Upon reset, PDR5 is initialized to H'00.
Port Control Register 5 (PCR5)
Bit
Initial value
Read/Write
7
PCR5
0
W
6
PCR5
0
W
5
PCR5
0
W
4
PCR5
0
W
3
PCR5
0
W
0
PCR5
0
W
2
PCR5
0
W
1
PCR5
0
W
76
5
4
3
2
1
0
PCR5 is an 8-bit register for controlling whether each of the port 5 pins P57 to P50 functions as an
input pin or output pin. Setting a PCR5 bit to 1 makes the corresponding pin an output pin, while
clearing the bit to 0 makes the pin an input pin. PCR5 and PDR5 settings are valid when the
corresponding pins are designated for general-purpose input/output by PMR5 and bits SGS3 to
SGS0 in LPCR.
Upon reset, PCR5 is initialized to H'00.
PCR5 is a write-only register, which is always read as all 1s.



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