PIC16C63A Microchip Technology, PIC16C63A Datasheet - Page 49

• Manufacturer Part Number: PIC16C63A
• Description: 28/40-Pin 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

7.3.3
The following steps should be taken when configuring
the CCP module for PWM operation:
1.
2.
3.
4.
5.
TABLE 7-4:
TABLE 7-5:
Address
0Bh,8Bh
0Ch
8Ch
87h
11h
92h
12h
15h
16h
17h
Legend:
Note 1: These bits/registers are reserved, maintain as '0'.
Timer Prescaler (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
1998 Microchip Technology Inc.
Set the PWM period by writing to the PR2 regis-
ter.
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.
SET-UP FOR PWM OPERATION
x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PWM and Timer2.
Name
INTCON
PIR1
PIE1
TRISC
TMR2
PR2
T2CON
CCPR1L
CCPR1H
CCP1CON
PWM Frequency
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 20 MHz
REGISTERS ASSOCIATED WITH PWM AND TIMER2
PORTC Data Direction Register
Timer2 module’s register
Timer2 module’s period register
Capture/Compare/PWM register1 (LSB)
Capture/Compare/PWM register1 (MSB)
Bit 7
GIE
(1)
(1)
—
—
TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000
PEIE
ADIF
ADIE
Bit 6
—
CCP1X
Bit 5
T0IE
(1)
(1)
1.22 kHz 4.88 kHz 19.53 kHz 78.12 kHz 156.3 kHz 208.3 kHz
0xFF
16
10
CCP1Y
PIC16C63A/65B/73B/74B
INTE
Bit 4
(1)
(1)
0xFF
10
4
CCP1M3 CCP1M2 CCP1M1 CCP1M0 --00 0000 --00 0000
SSPIE
SSPIF
RBIE
Bit 3
0xFF
CCP1IF
CCP1IE
10
Bit 2
T0IF
1
TMR2IE
TMR2IF
INTF
Bit 1
0x3F
1
8
TMR1IF 0000 0000 0000 0000
TMR1IE 0000 0000 0000 0000
RBIF
Bit 0
0x1F
1
7
1111 1111 1111 1111
0000 000x 0000 000u
0000 0000 0000 0000
1111 1111 1111 1111
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
DS30605A-page 49
Value on
POR,
BOR
0x17
5.5
1
Value on
all other
resets