PIC16F616 Microchip Technology Inc., PIC16F616 Datasheet - Page 36

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

PIC16F610/616/16HV610/616
4.2.4
Each PORTA pin is multiplexed with other functions.
The pins and their combined functions are briefly
described here. For specific information about
individual functions such as the Comparator or the
ADC, refer to the appropriate section in this data sheet.
4.2.4.1
Figure 4-1 shows the diagram for this pin. The RA0 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• an analog non-inverting input to the comparator
• In-Circuit Serial Programming data
FIGURE 4-1:
DS41288C-page 34
Interrupt-on-
Change
Note 1:
Write ‘0’ to RAIF
PIN DESCRIPTIONS AND
DIAGRAMS
RA0/AN0
2:
3:
Comparator mode and ANSEL determines Analog Input mode.
Set has priority over Reset.
PIC16F616/16HV616 only.
Q
BLOCK DIAGRAM OF RA<1:0>
S
R
(1)
(2)
/C1IN+/ICSPDAT
Data Bus
(1)
WPUA
PORTA
WPUA
PORTA
TRISA
TRISA
From other
RA<5:1> pins (RA0)
RA<5:2, 0> pins (RA1)
IOCA
IOCA
WR
RD
WR
WR
WR
RD
RD
RD
D
D
D
D
CK
CK
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
Preliminary
To A/D Converter
To Comparator
4.2.4.2
Figure 4-1 shows the diagram for this pin. The RA1 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• an analog inverting input to the comparator
• a voltage reference input for the ADC
• In-Circuit Serial Programming clock
RD PORTA
Input Mode
Analog
Note 1: PIC16F616/16HV616 only.
(3)
Q
Q
(1)
Input Mode
Analog
EN
EN
D
D
RA1/AN1
ICSPCLK
(1)
RAPU
Q1
© 2007 Microchip Technology Inc.
(1)
/C12IN0-/V
V
Weak
DD
(1)
REF
(1)
V
V
DD
SS
(1)
/
I/O Pin