Datasheet

PIC12(L)F1840
DS40001441D-page 104  2011-2013 Microchip Technology Inc.
12.2.4 PORTA FUNCTIONS AND OUTPUT
PRIORITIES
Each PORTA pin is multiplexed with other functions. The
pins, their combined functions and their output priorities
are shown in Table 12-1.
When multiple outputs are enabled, the actual pin
control goes to the peripheral with the highest priority.
Analog input functions, such as ADC, comparator and
CapSense inputs, 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 as shown in the priority list.
TABLE 12-1: PORTA OUTPUT PRIORITY
Pin Name Function Priority
(1)
RA0 ICSPDAT
ICDDAT
DACOUT
MDOUT
TX/CK
(1)
SDO
(1)
P1B
(1)
RA1 ICSPCLK
ICDCLK
SCL
RX/DT
(1)
SCK
RA2 SRQ
C1OUT
SDA
CCP1/P1A
(1)
RA3 No output priorities. Input only pin.
RA4 OSC2
CLKOUT
T1OSO
CLKR
TX/CK
(1)
SDO
(1)
P1B
(1)
RA5 OSC1
T1OSI
SRNQ
RX/DT
(1)
CCP1/P1A
(1)
Note 1: Priority listed from highest to lowest.