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| PIC16F610 Datasheet, PDF (37/180 Pages) Microchip Technology – 14-Pin, Flash-Based 8-Bit CMOS Microcontrollers | |||
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PIC16F610/616/16HV610/616
4.2.4.3 RA2/AN2(1)/T0CKI/INT/C1OUT
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(1)
⢠the clock input for TMR0
⢠an external edge triggered interrupt
⢠a digital output from Comparator C1
Note 1: PIC16F616/16HV616 only.
FIGURE 4-2:
BLOCK DIAGRAM OF RA2
Data Bus
WR
WPUA
RD
WPUA
DQ
CK Q
WR
PORTA
DQ
CK Q
C1OE
Enable
Analog(1)
Input Mode
RAPU
VDD
Weak
C1OE 1
0
VDD
I/O Pin
VSS
WR
TRISA
DQ
CK Q
RD
TRISA
RD
PORTA
WR
IOAC
DQ
CK Q
RD
IOAC
Analog(1)
Input Mode
QD
EN
Q1
QD
Interrupt-on-
Change
Q S(2)
R
Write â0â to RAIF
From other
RA<5:3, 1:0> pins
EN
RD PORTA
To Timer0
To INT
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.
© 2007 Microchip Technology Inc.
Preliminary
DS41288C-page 35
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