
PIC16F913/914/916/917/946
DS41250F-page 46
2007 Microchip Technology Inc.
3.2.1.2
RA1/AN1/C2-/SEG7
Figure 3-2 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 input for Comparator C2
an analog output for the LCD
FIGURE 3-2:
BLOCK DIAGRAM OF RA1
Q
D
Q
CK
Data Latch
TRIS Latch
RD TRISA
RD PORTA
Q
D
Q
CK
To A/D Converter and Comparator
SEG7
Data Bus
WR PORTA
WR TRISA
Analog Input or
I/O Pin
TTL
Input Buffer
SE7 and LCDEN
VDD
VSS