PIC16C717/770/771
TABLE 3-1: PORTA FUNCTIONS
Name
RA0/AN0
RA1/AN1/LVDIN
RA2/AN2/VREF-/VRL
RA3/AN3/VREF+/VRH
RA4/T0CKI
RA5/MCLR/VPP
RA6/OSC2/CLKOUT
RA7/OSC1/CLKIN
Function
RA0
AN0
RA1
AN1
LVDIN
RA2
AN2
VREF-
VRL
RA3
AN3
VREF+
VRH
RA4
T0CKI
RA5
MCLR
VPP
RA6
OSC2
CLKOUT
RA7
OSC1
CLKIN
Input
Type
ST
AN
ST
AN
AN
ST
AN
AN
ST
AN
AN
ST
ST
ST
ST
Power
ST
ST
XTAL
ST
Output
Type
CMOS
CMOS
CMOS
AN
CMOS
AN
OD
CMOS
XTAL
CMOS
CMOS
Description
Bi-directional I/O
A/D input
Bi-directional I/O
A/D input
LVD input reference
Bi-directional I/O
A/D input
Negative analog reference input
Internal voltage reference low output
Bi-directional I/O
A/D input
Positive analog reference input
Internal voltage reference high output
Bi-directional I/O
TMR0 clock input
Input port
Master clear
Programming voltage
Bi-directional I/O
Crystal/resonator
FOSC/4 output
Bi-directional I/O
Crystal/resonator
External clock input/ER resistor connection
DS41120A-page 34
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© 1999 Microchip Technology Inc.