Port 3 Pull-Up Mos Control Register (P3Pcr); Pin Functions - Renesas H8S/2158 User Manual

9.3.3

Port 3 Pull-Up MOS Control Register (P3PCR)

P3PCR controls the port 3 built-in input pull-up MOSs.
Bit Bit Name
7 P37PCR
6 P36PCR
5 P35PCR
4 P34PCR
3 P33PCR
2 P32PCR
1 P31PCR
0 P30PCR
9.3.4

Pin Functions

The relationship between register setting values and pin functions are as follows in each operating
mode. Note that MMC mode stands for MultiMediaCard mode, and the symbol "—" stands for
Don't care in the tables.
Extended Mode:
Port 3 pins automatically function as the data bus.
Single-Chip Mode:
• P37/WUE15
The pin function is switched as shown below according to the P37DDR bit.
When the WUEM15 bit in WUEMR3 of the interrupt controller is cleared to 0, this pin can be
used as the WUE15 input pin. To use this pin as the WUE15 input pin, clear the P37DDR bit
to 0.
P37DDR
Pin function
Initial Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0
P37 input pin
Description
In extended mode:
Operation is not affected.
In single-chip mode:
When the pins are in input state, the
corresponding input pull-up MOS is turned on
when a P3PCR bit is set to 1.
WUE15 input pin
Rev. 3.00 Jan 25, 2006 page 217 of 872
Section 9 I/O Ports
1
P37 output pin
REJ09B0286-0300