PIC16F917-E/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F917-E/ML

28/40/44/64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

Microchip Technology 

PIC16F913/914/916/917/946

3.2.1.4 RA3/AN3/C1+/VREF+/COM3/SEG15

Figure 3-4 shows the diagram for this pin. The RA3 pin

is configurable to function as one of the following:

• a general purpose input

• an analog input for the ADC

• an analog input from Comparator C1

• a voltage reference input for the ADC

• analog outputs for the LCD

FIGURE 3-4:

BLOCK DIAGRAM OF RA3

Data Bus

WR PORTA

WR TRISA

D

Q

CK Q

Data Latch

D

Q

CK Q

TRIS Latch

VDD

VSS

Analog Input or

LCDMODE_EN(2)

RD TRISA

LCDMODE_EN(2)

TTL

Input Buffer

I/O Pin

RD PORTA

COM3(1) or SEG15

LCDMODE_EN(2)

To A/D Converter and Comparator

To A/D Module VREF+ Input

Note 1: PIC16F913/916 only.

2: For the PIC16F913/916, the LCDMODE_EN = LCDEN and (SE15 or LMUX<1:0> = 11).

For the PIC16F914/917 and PIC16F946, the LCDMODE_EN = LCDEN and SE15.

DS41250F-page 48

© 2007 Microchip Technology Inc.

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