Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SSOP 20 8-Bit 20 MHz I/O number 17

PIC16F785/HV785

4.2.3 PORTA 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 individ-

ual functions such as the comparator or the A/D, refer

to the appropriate section in this Data Sheet.

4.2.3.1 RA0/AN0/C1IN+/ICSPDAT

Figure 4-1 shows the diagram for this pin. The RA0 pin

is configurable to function as one of the following:

• General purpose I/O

• Analog input for the A/D

• Analog input to Comparator 1

• In-Circuit Serial Programming

™

data

FIGURE 4-1: BLOCK DIAGRAM OF RA0

4.2.3.2 RA1/AN1/C12IN0-/V

REF/ICSPCLK

Figure 4-1 shows the diagram for this pin. The RA1 pin

is configurable to function as one of the following:

• General purpose I/O

• Analog input for the A/D

• Analog input to Comparators 1 and 2

• Voltage reference input for the A/D

• Buffered or unbuffered voltage reference output

• In-Circuit Serial Programming clock

FIGURE 4-2: BLOCK DIAGRAM OF RA1

I/O pin

VDD

VSS

VDD

Weak

Data Bus

WPUA

RD PORTA

PORTA

TRISA

IOCA

To Comparator

To A/D Converter

ANS0

RAPU

ANS0

Interrupt-on-

change