PIC12F1822-ISLASHMF datasheet(149/398 Pages) MICROCHIP

No. de pieza	PIC12F1822-I/MF

Descripción Electrónicos	8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology

PDF	398 Pages

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Fabricante Electrónico	MICROCHIP [Microchip Technology]

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 2010 Microchip Technology Inc.

Preliminary

DS41413A-page 149

PIC12F/LF1822/16F/LF1823

16.4

DAC Voltage Reference Output

The DAC can be output to the DACOUT pin by setting

the DACOE bit of the DACCON0 register to ‘1’. Selecting

the DAC reference voltage for output on the DACOUT

pin automatically overrides the digital output buffer and

digital input threshold detector functions of that pin.

Reading the DACOUT pin when it has been configured

for DAC reference voltage output will always return a ‘0’.

Due to the limited current drive capability, a buffer must

be used on the DAC voltage reference output for

external connections to DACOUT. Figure 16-3 shows

an example buffering technique.

FIGURE 16-2:

DIGITAL-TO-ANALOG CONVERTER BLOCK DIAGRAM

DACR<4:0>

VREF-

DAC

DACOUT

(To Comparator, CSM and

ADC Modules)

DACOE

VDD

VREF+

DACPSS<1:0>

DACEN

Steps

Digital-to-Analog Converter (DAC)

FVR BUFFER2

VSRC-

VSRC+

VSS

DACLPS

PIC12F1822-I/MF Datasheet(PDF) 149 Page - Microchip Technology