PIC16C782 Microchip Technology Inc., PIC16C782 Datasheet - Page 115

• Manufacturer Part Number: PIC16C782
• Description: 8-bit Cmos Microcontrollers With A/d, D/a, Opamp, Comparators And Psmc
• Manufacturer: Microchip Technology Inc.

EXAMPLE 13-3:
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2001 Microchip Technology Inc.
This code block will configure the PSMC and
all additional peripherals for a motor speed
control.
Order of configuration
1.
2.
3.
4.
5.
6.
This code block will configure all analog ports.
BANKSEL
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
This code block will configure the DAC for VR as
DACREF, and no output.
BANKSEL
BSF
BANKSEL
CLRF
MOVLW
MOVWF
MOVLW
MOVWF
This code block will configure the OPA module
as an Op Amp, with a 2 MHz GBWP
MOVLW
MOVWF
This code block will configure Comparator C1
for normal speed and output polarity,
input on AN6, and Reference from the VDAC
MOVLW
MOVWF
This code block will configure the PSMC module
for PWM, Fosc/16, Single input, Single output
Non-inverting out, DC min = 0%, DC max = 94%
MOVLW
MOVWF
MOVLW
MOVWF
BSF
PORTA/B I/O and analog configured
DAC enabled, configured, and preset
Op Amp enabled and configured
Comparator C1 enabled and configured
PSMC configured
PSMC enabled
TRISA
B’01000011’
TRISA
B’00001100’
TRISB
B’11000011’
ANSEL
REFCON
REFCON, VREN
DACON0
DAC
B’10000010’
DACON0
OUTPUT_VALUE
DAC
B’10000001’
OPACON
B’10001110’
CM1CON0
B’11001100’
PSMCCON0
B’00000010’
PSMCCON1
PSMCCON1,SMCON
PERIPHERAL CONFIGURATION EXAMPLE
; Select Bank 1
; Set RA0,1 & 6 as inputs
; Set RB2 & 3 as inputs
; Set AN0,1,6,& 7 as analog
; Enable VR
; Select Bank 2
; Set DAC to safe value
; Enable DAC, no output
;
; Set DAC output level
; Set Op Amp mode and
;
; Set C1; no ext out, norm
;
; Set DCmin 0, DCmax 94, Fosc/16
; Set PWM, Sngl in/out, noninvert
; Enable PSMC
and set DACREF = VR
2 MHz GBWP
speed & pol, VDAC, AN6
Preliminary
PIC16C781/782
DS41171A-page 113