SH7720 Datasheet, PDF (1231/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 34 Pin Function Controller (PFC)
34.1.17 Port U Control Register (PUCR)
PUCR is a 16-bit readable/writable register that selects the pin function and input pull-up MOS
control.
Initial
Bit
Bit Name Value
15 to 10 
All 0
9
PU4MD1 1
8
PU4MD0 1
7
PU3MD1 1
6
PU3MD0 1
5
PU2MD1 1
4
PU2MD0 1
3
PU1MD1 1
2
PU1MD0 1
1
PU0MD1 1
0
PU0MD0 1
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
PU4 Mode
00: Other functions (See table 34.1.)
01: Port output
10: Port input (Pull-up MOS: On)
11: Port input (Pull-up MOS: Off)
PU3 Mode
00: Other functions (See table 34.1.)
01: Port output
10: Port input (Pull-up MOS: On)
11: Port input (Pull-up MOS: Off)
PU2 Mode
00: Other functions (See table 34.1.)
01: Port output
10: Port input (Pull-up MOS: On)
11: Port input (Pull-up MOS: Off)
PU1 Mode
00: Other functions (See table 34.1.)
01: Port output
10: Port input (Pull-up MOS: On)
11: Port input (Pull-up MOS: Off)
PU0 Mode
00: Other functions (See table 34.1.)
01: Port output
10: Port input (Pull-up MOS: On)
11: Port input (Pull-up MOS: Off)
Rev. 3.00 Jan. 18, 2008 Page 1169 of 1458
REJ09B0033-0300