PIC16F610 Datasheet, PDF (36/180 Pages) Microchip Technology – 14-Pin, Flash-Based 8-Bit CMOS Microcontrollers

PIC16F610/616/16HV610/616
4.2.4
PIN DESCRIPTIONS AND
DIAGRAMS
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 RA0/AN0⁽¹⁾/C1IN+/ICSPDAT
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⁽¹⁾
• an analog non-inverting input to the comparator
• In-Circuit Serial Programming data
4.2.4.2
RA1/AN1⁽¹⁾/C12IN0-/VREF⁽¹⁾/
ICSPCLK
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⁽¹⁾
• an analog inverting input to the comparator
• a voltage reference input for the ADC⁽¹⁾
• In-Circuit Serial Programming clock
Note 1: PIC16F616/16HV616 only.
FIGURE 4-1:
BLOCK DIAGRAM OF RA<1:0>
Data Bus
WR
WPUA
RD
WPUA
WR
PORTA
DQ
CK _Q
DQ
CK _Q
Analog⁽¹⁾
Input Mode
VDD
Weak
RAPU
VDD
I/O Pin
VSS
WR
TRISA
DQ
CK _Q
RD
TRISA
RD
PORTA
WR
IOCA
DQ
CK _Q
RD
IOCA
Analog⁽¹⁾
Input Mode
QD
EN
Q1
QD
Interrupt-on-
Change
Q S⁽²⁾
R
Write ‘0’ to RAIF
From other
RA<5:1> pins (RA0)
RA<5:2, 0> pins (RA1)
EN
RD PORTA
To Comparator
To A/D Converter⁽³⁾
Note 1:
2:
3:
Comparator mode and ANSEL determines Analog Input mode.
Set has priority over Reset.
PIC16F616/16HV616 only.
DS41288C-page 34
Preliminary
© 2007 Microchip Technology Inc.