PIC18F45K22-I/P Microchip Technology Inc., PIC18F45K22-I/P Datasheet - Page 321

• Manufacturer Part Number: PIC18F45K22-I/P
• Description: 40 PDIP .600in TUBE, 32KB, Flash, 1536bytes-RAM, 8-bit Family, nanoWatt XLP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F45K22-I/P

• A/d Inputs: 28-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 16 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 35
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 40-pin PDIP
• Programmable Memory: 32K Bytes
• Ram Size: 1.5K Bytes
• Speed: 64 MHz
• Temperature Range: –40 to 125 °C
• Timers: 3-8-bit, 4-16-bit
• Voltage, Range: 1.8-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

EXAMPLE 19-1:
 2010 Microchip Technology Inc.
#include "p18cxxx.h"
/**************************************************************************/
/*Set up CTMU *****************************************************************/
/**************************************************************************/
void setup(void)
{ //CTMUCONH/1 - CTMU Control registers
/**************************************************************************/
//Set up AD converter;
/**************************************************************************/
}
//
// ADCON2
ADCON2bits.ADFM=1;
ADCON2bits.ACQT=1;
ADCON2bits.ADCS=2;
// ADCON1
ADCON1bits.PVCFG0 =0;
ADCON1bits.NVCFG1 =0;
ADCON0bits.CHS=2;
ADCON0bits.ADON=1;
ANSELAbits.ANSA2=1;
TRISAbits.TRISA2=1;
CTMUCONH = 0x00;
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,
//CTMUICON - CTMU Current Control Register
CTMUICON = 0x01;
TRISA=0x04;
// Configure AN2 as an analog channel
ADCON0
SETUP FOR CTMU CALIBRATION ROUTINES
//make sure CTMU is disabled
//0.55uA, Nominal - No Adjustment
//set channel 2 as an input
// Results format 1= Right justified
// Acquition time 7 = 20TAD 2 = 4TAD 1=2TAD
// Clock conversion bits 6= FOSC/64 2=FOSC/32
// Select ADC channel
// Turn on ADC
// Vref+ = AVdd
// Vref- = AVss
Preliminary
PIC18(L)F2X/4XK22
DS41412D-page 321