PIC16F874A-I/PT Microchip Technology, PIC16F874A-I/PT Datasheet - Page 213

• Manufacturer Part Number: PIC16F874A-I/PT
• Description: IC MCU FLASH 4K 20MHZ 44-TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F874A-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 44-TQFP, 44-VQFP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: I2C/SPI/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT44PT3 - SOCKET TRAN ICE 44MQFP/TQFPAC164305 - MODULE SKT FOR PM3 44TQFP444-1001 - DEMO BOARD FOR PICMICRO MCUAC164020 - MODULE SKT PROMATEII 44TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

14.5.3
14.5.4
14.5.5
1997 Microchip Technology Inc.
Set-up for PWM Operation
Sleep Operation
Effects of a Reset
The following steps configure the CCP module for PWM operation:
1.
2.
3.
4.
5.
When the device is placed in sleep, Timer2 will not increment, and the state of the module will
not change. If the CCP pin is driving a value, it will continue to drive that value. When the device
wakes-up, it will continue from this state.
The CCP module is off.
Establish the PWM period by writing to the PR2 register.
Establish the PWM duty cycle by writing to the DCxB9:DCxB0 bits.
Make the CCPx pin an output by clearing the appropriate TRIS bit.
Establish the TMR2 prescale value and enable Timer2 by writing to T2CON.
Configure the CCP module for PWM operation.
Section 14. CCP
DS31014A-page 14-11
14