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H8/3021 Datasheet(PDF) 172 Page - Renesas Technology Corp

Part # H8/3021
Description  16-Bit Single-Chip Microcomputer
PDF  712 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3021 Datasheet(HTML) 172 Page - Renesas Technology Corp

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7. I/O Ports
Rev.2.00 Mar. 22, 2007 Page 148 of 684
REJ09B0352-0200
Port 5 Input Pull-Up Control Register (P5PCR): P5PCR is an 8-bit readable/writable register
that controls the MOS input pull-up transistors in port 5.
Bit
Initial value
Read/Write
7
—
1
—
6
—
1
—
5
—
1
—
4
—
1
—
3
P5 PCR
0
R/W
3
2
P5 PCR
0
R/W
2
1
P5 PCR
0
R/W
1
0
P5 PCR
0
R/W
0
Reserved bits
These bits control input pull-up
transistors built into port 5
Port 5 input pull-up control 3 to 0
When a P5DDR bit is cleared to 0 (selecting generic input) in modes 5 to 7, if the corresponding
bit from P5
3PCR to P50PCR is set to 1, the input pull-up transistor is turned on.
P5PCR is initialized to H'F0 by a reset and in hardware standby mode. In software standby mode
it retains its previous setting.



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