PIC16F877A-I/L Microchip Technology, PIC16F877A-I/L Datasheet - Page 70

• Manufacturer Part Number: PIC16F877A-I/L
• Description: IC MCU FLASH 8KX14 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877A-I/L

• Program Memory Type: FLASH
• Program Memory Size: 14KB (8K x 14)
• Package / Case: 44-PLCC
• 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: 256 x 8
• Ram Size: 368 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: 368 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
• Package: 44PLCC
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164309 - MODULE SKT FOR PM3 44PLCC444-1001 - DEMO BOARD FOR PICMICRO MCUDVA16XL441 - ADAPTER DEVICE ICE 44PLCC309-1040 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1039 - ADAPTER 44-PLCC TO 40-DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: PIC16F877AI/L

PIC16F87XA
8.3.3
The following steps should be taken when configuring
the CCP module for PWM operation:
1.
2.
3.
4.
5.
TABLE 8-3:
TABLE 8-4:
DS39582B-page 68
0Bh,8Bh,
10Bh, 18Bh
0Ch
0Dh
8Ch
8Dh
87h
0Eh
0Fh
10h
15h
16h
17h
1Bh
1Ch
1Dh
Legend:
Note 1:
Timer Prescaler (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
Address
Set the PWM period by writing to the PR2 register.
Set the PWM duty cycle by writing to the
CCPR1L register and CCP1CON<5:4> bits.
Make the CCP1 pin an output by clearing the
TRISC<2> bit.
Set the TMR2 prescale value and enable Timer2
by writing to T2CON.
Configure the CCP1 module for PWM operation.
PWM Frequency
x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by Capture and Timer1.
The PSP is not implemented on 28-pin devices; always maintain these bits clear.
SETUP FOR PWM OPERATION
INTCON
PIR1
PIR2
PIE1
PIE2
TRISC
TMR1L
TMR1H
T1CON
CCPR1L
CCPR1H
CCP1CON
CCPR2L
CCPR2H
CCP2CON
Name
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 20 MHz
REGISTERS ASSOCIATED WITH CAPTURE, COMPARE AND TIMER1
PORTC Data Direction Register
Holding Register for the Least Significant Byte of the 16-bit TMR1 Register
Holding Register for the Most Significant Byte of the 16-bit TMR1 Register
Capture/Compare/PWM Register 1 (LSB)
Capture/Compare/PWM Register 1 (MSB)
Capture/Compare/PWM Register 2 (LSB)
Capture/Compare/PWM Register 2 (MSB)
PSPIF
PSPIE
Bit 7
GIE
—
—
—
—
—
(1)
(1)
ADIE
Bit 6
PEIE
ADIF
—
—
—
—
—
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON --00 0000 --uu uuuu
1.22 kHz
TMR0IE
CCP1X
CCP2X
0xFFh
RCIE
Bit 5
RCIF
—
—
16
10
CCP1Y
CCP2Y
Bit 4
INTE
TXIF
TXIE
4.88 kHz
—
—
0xFFh
10
4
CCP1M3 CCP1M2 CCP1M1 CCP1M0 --00 0000 --00 0000
CCP2M3 CCP2M2 CCP2M1 CCP2M0 --00 0000 --00 0000
SSPIF
SSPIE
RBIE
Bit 3
—
—
19.53 kHz
0xFFh
10
1
TMR0IF
CCP1IF
CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000
Bit 2
—
—
78.12kHz
TMR2IF
0x3Fh
Bit 1
INTF
—
—
1
8
 2003 Microchip Technology Inc.
TMR1IF 0000 0000 0000 0000
CCP2IE ---- ---0 ---- ---0
CCP2IF ---- ---0 ---- ---0
Bit 0
RBIF
156.3 kHz
0x1Fh
1
7
0000 000x 0000 000u
1111 1111 1111 1111
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
POR, BOR
Value on:
208.3 kHz
0x17h
5.5
Value on
1
all other
Resets