Datasheet
2010-2013 Microchip Technology Inc. DS40001430E-page 49
PIC16(L)F720/721
FIGURE 6-1: BLOCK DIAGRAM OF RA0
I/O Pin
VDD
VSS
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
VDD
D
EN
Q
D
EN
Q
Weak
RD PORTA
RD
WR
WR
RD
WR
IOCA
RD
IOCA
Interrupt-on-Change
Analog
(1)
Input mode
RABPU
Analog
(1)
Input mode
Q3
WR
RD
WPUA
Data Bus
WPUA
PORTA
TRISA
TRISA
PORTA
Note 1: ANSEL determines Analog Input mode.
To A/D Converter
ICSP™ mode
DEBUG
0
1
1
0
0
1
0
1
TRIS_ICDDAT
PORT_ICDDAT
ICSPDAT