PIC18F87J72-I/PT Microchip Technology, PIC18F87J72-I/PT Datasheet - Page 290

• Manufacturer Part Number: PIC18F87J72-I/PT
• Description: IC PIC MCU 8BIT 14KB FLSH 80TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F87J72-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 128KB (64K x 16)
• Package / Case: 80-TQFP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, LVD, POR, PWM, WDT
• Number Of I /o: 51
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 12x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, USART, SPI, I2C
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 51
• Number Of Timers: 4
• Operating Supply Voltage: 2 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 14
• Controller Family/series: PIC18F
• No. Of I/o's: 51
• Ram Memory Size: 3923Byte
• Cpu Speed: 48MHz
• No. Of Timers: 4
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC18F87J72 FAMILY
EXAMPLE 22-2:
EXAMPLE 22-3:
DS39979A-page 290
///////////////////////////////////////////////////////////////////////////////////
// STEP 1: Initialize the MSSP in SPI Master mode to access the AFE
// Connections: SCK--SCKA, SDI--SDOA, SDO--SDIA
////////////////////////////////////////////////////////////////////////////////////
//
//
///////////////////////////////////////////////////////////////////////////////
// STEP 2: Issue Reset to AFE. ARESET pin is connected to RD0 in this example
/////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////
// STEP 3:
// Disable all chip selects for all devices connected to SPI, including chip select
// for the AFE. CSA is connected to RD7 in this example
////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////
// STEP 5: Set up Clock to AFE.
// Connections: In this example CLKIA is connected to CCP1.
///////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////
// STEP 6: Interrupt Configuration
// DR output of AFE can be used as interrupt. It can be connected to any external interrupt,
// like INT0. It can be declared as low or high priority interrupt.
// This example configures INT0 (connected to DR)as a high-priority interrupt.
///////////////////////////////////////////////////////////////////////////////////////////////
SSPCON1bits.CKP = 1;
SSPCON1bits.CKE = 0;
SSPCON1bits.CKP = 0;
SSPCON1bits.CKE = 1;
SSPCON1bits.SSPEN = 1;
TRISCbits.TRISC3 = 0;
TRISCbits.TRISC4 = 1;
TRISCbits.TRISC5 = 0;
LATDbits.LATD0 = 0;
TRISDbits.TRISD0=0;
LATDbits.LATD0 = 1;
TRISDbits.TRISD7=0;
LATDbits.LATD7=1;
CCP1CON |= 0b00001100;
CCPR1L=0x01;
TRISCbits.TRISC2 = 0;
T2CONbits.TMR2ON = 0;
PR2 = 0x01;
T2CONbits.TMR2ON = 1;
RCONbits.IPEN=1;
INTCON2bits.RBPU=0;
INTCON2bits.INTEDG0=0;
INTCONbits.GIEH = 1;
INTCONbits.INT0IE = 1;
INITIALIZING THE MSSP MODULE
AFE CLOCK SOURCE AND INTERRUPT CONFIGURATION
// define SDI pin as input
// define SDO pin as output
// ccpxm3:ccpxm0 11xx=pwm mode
// SPI mode 1,1: idle state for SCK is high,
// data transmitted on transition from idle to active state
// If SPI mode 0,0 is used instead, SCK idle state is low,
// data trasmitted on transition from active to idle state
// Enable SPI
// define SCK pin as output
// Put the Delta Sigma ADC module in reset
// Release the Delta Sigma ADC module from reset
// 50% Duty Cycle Clock
// Make RC2 Output; RC2 is connected to CLKIA of AFE
// STOP TIMER2 registers to POR state
// Set period
// Turn on PWM1
//Priority Interrupt
//Enable INT0 pull-up; required
//Falling edge select; DR is active low pulse
//Enable high pririty interrupts
//Enable INT0 interrupt
Preliminary
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