Datasheet

 2010-2013 Microchip Technology Inc. DS40001430E-page 51
PIC16(L)F720/721
FIGURE 6-3: BLOCK DIAGRAM OF RA2
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
Analog
(1)
Input mode
Data Bus
WR
WPUA
RD
WPUA
RD
PORTA
WR
PORTA
WR
TRISA
RD
TRISA
WR
IOCA
RD
IOCA
To A/D Converter
To I NT
To Timer0
Analog
(1)
Input mode
RABPU
RD PORTA
Interrupt-on-
Change
Q3
Note 1: ANSEL determines Analog Input mode.
To
Voltage Regulator
(for
PIC16F720/721
only)