Datasheet

Table Of Contents
Section 9 I/O Ports
Rev. 2.00 Jul. 04, 2007 Page 153 of 692
REJ09B0309-0200
9.1.3 Port Pull-Up Control Register 1 (PUCR1)
PUCR1 controls the pull-up MOS of the port 1 pins in bit units.
Bit Bit Name
Initial
Value
R/W Description
7 1 Reserved
This bit is always read as 1 and cannot be modified.
6
5
4
3
2
1
0
PUCR16
PUCR15
PUCR14
PUCR13
PUCR12
PUCR11
PUCR10
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
When a PCR1 bit is cleared to 0, setting the
corresponding PUCR1 bit to 1 turns on the pull-up MOS
for the corresponding pin, while clearing the bit to 0
turns off the pull-up MOS.
9.1.4 Port Mode Register 1 (PMR1)
PMR1 controls the selection of functions for port 1 pins.
Bit Bit Name
Initial
Value
R/W Description
7 to 2 All 1 Reserved
These bits are always read as 1 and cannot be
modified.
1 AEVL 0 R/W P11/AEVL Pin Function Switch
Selects whether pin P11/AEVL is used as P11 or as
AEVL.
0: P11 I/O pin
1: AEVL input pin
0 AEVH 0 R/W P10/AEVH Pin Function Switch
Selects whether pin P10/AEVH is used as P10 or as
AEVH.
0: P10 I/O pin
1: AEVH input pin