16F1828 datasheet(104/410 Pages) MICROCHIP

104 / 410 page

PIC12(L)F1840

DS41441C-page 104

 2011-2012 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.

See APFCON register (Register 12-1).

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