PIC18F86K22-I/PTRSL Microchip Technology, PIC18F86K22-I/PTRSL Datasheet - Page 398

• Manufacturer Part Number: PIC18F86K22-I/PTRSL
• Description: MCU PIC 64K FLASH XLP 80TQFP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F86K22-I/PTRSL

• Core Size: 8-Bit
• Program Memory Size: 64KB (32K x 16)
• Core Processor: PIC
• Speed: 64MHz
• Connectivity: EBI/EMI, I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Controller Family/series: PIC18
• Eeprom Memory Size: 1024Byte
• Ram Memory Size: 3862Byte
• Cpu Speed: 16MIPS
• No. Of Timers: 11
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F87K22 FAMILY
27.8
The CTMU, along with an internal diode, can be used
to measure the temperature. The ADC can be con-
nected to the internal diode and the CTMU module can
EXAMPLE 27-5:
DS39960B-page 398
// Initialize CTMU
CTMUICON = 0x03;
CTMUCONHbits.CTMUEN = 1;
CTMUCONLbits.EDG1STAT = 1;
// Initialize ADC
ADCON0 = 0xE5;
ADCON1 = 0x00;
ADCON2 = 0xBE;
ADCON0bits.GO = 1;
while(ADCON0bits.G0);
Temp = ADRES;
Note:
Measuring Temperature
CTMU Module
The temperature diode is not calibrated or standardized; the user must calibrate the diode to their application.
ROUTINE FOR TEMPERATURE MEASUREMENT USING INTERNAL DIODE
with
// Enable ADC and connect to Internal diode
//Right Justified
// Start conversion
// Read ADC results (inversely proportional to temperature)
the
Preliminary
source the current to the diode. The ADC reading will
reflect the temperature. With the increase, the ADC
readings will go low. This can be used for low-cost
temperature measurement applications.
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