Datasheet
PIC16(L)F720/721
DS40001430E-page 50 2010-2013 Microchip Technology Inc.
FIGURE 6-2: BLOCK DIAGRAM OF RA1
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
Data Bus
WR WPUA
RD WPUA
RD PORTA
RD PORTA
WR PORTA
WR TRISA
RD TRISA
WR IOCA
RD IOCA
Interrupt-on-Change
Analog
(1)
Input mode
RABPU
Analog
(1)
Input mode
Q3
Note 1: ANSEL determines Analog Input mode.
To A/D Converter
ICSP™ mode
DEBUG
0
1
1
0
0
1
0
1
TRIS_ICDCLK
PORT_ICDCLK
ICSPCLK