Datasheet

PIC18(L)F2X/4XK22
DS41412F-page 138  2010-2012 Microchip Technology Inc.
10.1.1 PORTA OUTPUT PRIORITY
Each PORTA pin is multiplexed with other functions.
The pins, their combined functions and their output
priorities are briefly described here. For additional
information, refer to the appropriate section in this data
sheet.
When multiple outputs are enabled, the actual pin
control goes to the peripheral with the higher priority.
Table 10-4 lists the PORTA pin functions from the
highest to the lowest priority.
Analog input functions, such as ADC and comparator,
are not shown in the priority lists.
These inputs are active when the I/O pin is set for
Analog mode using the ANSELx registers. Digital
output functions may control the pin when it is in Analog
mode with the priority shown below.
TABLE 10-4: PORT PIN FUNCTION PRIORITY
Port bit
Port Function Priority by Port Pin
PORTA PORTB PORTC PORTD
(2)
PORTE
(2)
0 RA0 CCP4
(1)
SOSCO SCL2 CCP3
(8)
RB0 P2B
(6)
SCK2 P3A
(8)
RC0 RD0 RE0
1 RA1 SCL2
(1)
SOSCI SDA2 P3B
SCK2
(1)
CCP2
(3)
CCP4 RE1
P1C
(1)
P2A
(3)
RD1
RB1 RC1
2 RA2 SDA2
(1)
CCP1 P2B CCP5
P1B
(1)
P1A RD2
(4)
RE2
RB2 CTPLS
RC2
3 RA3 SDO2
(1)
SCL1 P2C MCLR
CCP2
(6)
SCK1 RD3 VPP
P2A
(6)
RC3 RE3
RB3
4SRQP1D
(1)
SDA1 SDO2
C1OUT RB4 RC4 P2D
CCP5
(1)
RD4
RA4
Note 1: PIC18(L)F2XK22 devices.
2: PIC18(L)F4XK22 devices.
3: Function default pin.
4: Function default pin (28-pin devices).
5: Function default pin (40/44-pin devices).
6: Function alternate pin.
7: Function alternate pin (28-pin devices).
8: Function alternate pin (40/44-pin devices)