Datasheet

Table Of Contents
Section 9 I/O Ports
Rev. 2.00 Jul. 04, 2007 Page 197 of 692
REJ09B0309-0200
9.12.2 Port Control Register E (PCRE)
PCRE selects inputs/outputs in bit units for pins of
port E.
Bit Bit Name
Initial
Value
R/W Description
7
6
5
4
3
2
1
0
PCRE7
PCRE6
PCRE5
PCRE4
PCRE3
PCRE2
PCRE1
PCRE0
0
0
0
0
0
0
0
0
W
W
W
W
W
W
W
W
Setting a PCRE bit to 1 makes the corresponding pin an
output pin, while clearing the bit to 0 makes the pin an
input pin. The settings in PCRE and in PDRE are valid
when the corresponding pin is designated as a general
I/O pin.
PCRE is a write-only register. These bits are always
read as 1.
9.12.3 Port Mode Register E (PMRE)
PMRE controls the selection of the port E pin functions.
Bit Bit Name
Initial
Value
R/W Description
7 to 5 All 1 Reserved
These bits are always read as 1 and cannot be modified.
4 TMIC 0 R/W PE7/TMIC Pin Function Switch
0: PE7 I/O pin
1: TMIC input pin
3 IRQ0 0 R/W PE7/IRQ0 Pin Function Switch
0: PE7 I/O pin
1: IRQ0 input pin
2 UD 0 R/W PE6/UD Pin Function Switch
0: PE6 I/O pin
1: UD input pin
1 IRQ1 0 R/W PE3/IRQ1 Pin Function Switch
0: PE3 I/O pin
1: IRQ1 input pin