PIC16F688-ISLASHML datasheet(39/204 Pages) MICROCHIP

部件名	PIC16F688-I/ML

功能描述	14-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PDF	204 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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39 / 204 page

DS41203E-page 37

PIC16F688

4.2.5

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.

4.2.5.1

RA0/AN0/C1IN+/ICSPDAT/ULPWU

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 A/D

• an analog input to the comparator

• an analog input to the Ultra Low-Power Wake-up

• In-Circuit Serial Programming™ data

FIGURE 4-1:

BLOCK DIAGRAM OF RA0

I/O PIN

VDD

VSS

VDD

Weak

RD PORTA

IOCA

Interrupt-on-

To Comparator

Analog(1)

Input Mode

RAPU

Analog(1)

Input Mode

Change

IULP

WPUDA

Data Bus

WPUDA

PORTA

TRISA

PORTA

Note

Comparator mode and ANSEL determines analog Input mode.

+VT

ULPWUE

To A/D Converter

Vss

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