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PIC12F752 Datasheet(PDF) 111 Page - Microchip Technology

Part # PIC12F752
Description  8-Pin Flash-Based 8-Bit CMOS Microcontrollers
PDF  204 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC12F752 Datasheet(HTML) 111 Page - Microchip Technology

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 2011 Microchip Technology Inc.
Preliminary
DS41576A-page 111
PIC12F752/HV752
14.0
DIGITAL-TO-ANALOG
CONVERTER (DAC) MODULE
The 5-bit, dual range Digital-to-Analog Converter
(DAC) module supplies a variable voltage reference,
with 64 selectable output levels of which 3 levels are
duplicated. The output is ratiometric with respect to the
input source, VSRC+. See Figure 14-1 for a block
diagram of the DAC module.
The input of the DAC can be connected to two external
voltage connections:
•VDD pin
•VREF+ pin
The output of the DAC module provides a reference
voltage to the following:
• Comparator positive input
• ADC input channel
• FVR input reference
•DACOUT pin
The DAC is enabled by setting the DACEN bit of the
DACCON0 register.
FIGURE 14-1:
DIGITAL-TO-ANALOG CONVERTER BLOCK DIAGRAM
R2(2)
DACOE
VREF+
VDD
DACPSS
R2(30)
VSRC+
DACEN
Full Range
DACOUT
R1(30)
R1(16)
R1(31)
Limited Range
R1(15)
R1(0)
DACRNG
1
0
R2(31)
1
0
R1(1)
R2(1)
R2(0)
DACR<4:0>
11111
11110
00010
00001
00000
11111
11110
10000
01111
00001
00000
5
dac_ref
Note: R2 = 16*R1
(to Comparator, FVR
FVR and ADC modules)



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