PIC16F74-I/P Microchip Technology, PIC16F74-I/P Datasheet - Page 216

• Manufacturer Part Number: PIC16F74-I/P
• Description: IC MCU FLASH 4KX14 A/D 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F74-I/P

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Number Of I /o: 33
• Program Memory Type: FLASH
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Package: 40PDIP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 33
• Interface Type: I2C/SPI/USART
• On-chip Adc: 8-chx8-bit
• Number Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Ram Size: 192 B
• Maximum Clock Frequency: 20 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PICmicro MID-RANGE MCU FAMILY
DS31014A-page 14-14
Example 14-5:
;
; The CCP1 interrupt is disabled,
; do polling on the TMR2 Interrupt flag bit
;
PWM_Period_Match
;
; Update this PWM period and the following PWM Duty cycle
;
CLRF
CLRF
MOVLW
MOVWF
MOVLW
MOVWF
CLRF
BSF
BCF
CLRF
BCF
CLRF
MOVLW
MOVWF
BSF
BTFSS
GOTO
BCF
CCP1CON
TMR2
0x7F
PR2
0x1F
CCPR1L
INTCON
STATUS, RP0
TRISC, PWM1
PIE1
STATUS, RP0
PIR1
0x2C
CCP1CON
T2CON, TMR2ON ; Timer2 starts to increment
PIR1, TMR2IF
PWM_Period_Match
PIR1, TMR2IF
PWM Initialization
; CCP Module is off
; Clear Timer2
;
;
;
; Duty Cycle is 25% of PWM Period
; Disable interrupts and clear T0IF
; Bank1
; Make pin output
; Disable peripheral interrupts
; Bank0
; Clear peripheral interrupts Flags
; PWM mode, 2 LSbs of Duty cycle = 10
;
1997 Microchip Technology Inc.