PIC16F616 Microchip Technology Inc., PIC16F616 Datasheet - Page 37

• Manufacturer Part Number: PIC16F616
• Description: 14-pin Flash-based, 8-bit Cmos Microcontrollers
• Manufacturer: Microchip Technology Inc.

4.2.4.3
Figure 4-2 shows the diagram for this pin. The RA2 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• the clock input for TMR0
• an external edge triggered interrupt
• a digital output from Comparator C1
FIGURE 4-2:
© 2007 Microchip Technology Inc.
Note 1:
Interrupt-on-
Change
Write ‘0’ to RAIF
PIC16F616/16HV616 only.
RA2/AN2
Note 1:
Q
2:
3:
BLOCK DIAGRAM OF RA2
S
R
Comparator mode and ANSEL determines Analog Input mode.
Set has priority over Reset.
PIC16F616/16HV616 only.
(1)
(2)
/T0CKI/INT/C1OUT
Data Bus
(1)
WPUA
PORTA
WPUA
PORTA
TRISA
TRISA
WR
IOAC
IOAC
From other
RA<5:3, 1:0> pins
RD
WR
WR
WR
RD
RD
RD
D
D
D
D
CK
CK
CK
CK
PIC16F610/616/16HV610/616
Q
Q
Q
Q
Q
Q
Q
Q
Preliminary
To Timer0
To INT
To A/D Converter
Enable
C1OE
C1OE
RD PORTA
Input Mode
Analog
(3)
1
0
Q
Q
(1)
Input Mode
Analog
EN
EN
D
D
(1)
RAPU
Q1
V
Weak
DD
DS41288C-page 35
V
V
DD
SS
I/O Pin