PIC18F87K90 Datasheet, PDF (412/566 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC18F87K90 FAMILY
EXAMPLE 27-1: SETUP FOR CTMU CALIBRATION ROUTINES
#include "p18cxxx.h"
/**************************************************************************/
/*Setup CTMU *****************************************************************/
/**************************************************************************/
void setup(void)
{ //CTMUCON - CTMU Control register
CTMUCONH = 0x00;
//make sure CTMU is disabled
CTMUCONL = 0X90;
//CTMU continues to run when emulator is stopped,CTMU continues
//to run in idle mode,Time Generation mode disabled, Edges are blocked
//No edge sequence order, Analog current source not grounded, trigger
//output disabled, Edge2 polarity = positive level, Edge2 source =
//source 0, Edge1 polarity = positive level, Edge1 source = source 0,
// Set Edge status bits to zero
//CTMUICON - CTMU Current Control Register
CTMUICON = 0x01;
//0.55uA, Nominal - No Adjustment
/**************************************************************************/
//Setup AD converter;
/**************************************************************************/
TRISA=0x04;
//set channel 2 as an input
// Configured AN2 as an analog channel
// ANCON0
ANCON0 = 0X04;
// ANCON1
ANCON1 = 0XE0;
// ADCON1
ADCON2bits.ADFM=1;
ADCON2bits.ACQT=1;
ADCON2bits.ADCS=2;
//Resulst format 1= Right justified
//Acquition time 7 = 20TAD 2 = 4TAD 1=2TAD
//Clock conversion bits 6= FOSC/64 2=FOSC/32
// ADCON0
ADCON1bits.VCFG0 =0;
ADCON1bits.VCFG1 =0;
ADCON1bits.VNCFG =0;
ADCON0bits.CHS=2;
ADCON0bits.ADON=1;
}
//Vref+ = AVdd
//Vref+ = AVdd
//Vref- = AVss
//Select ADC channel
//Turn on ADC
DS39957B-page 412
Preliminary
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