PIC16LC72A-04I/SO Microchip Technology, PIC16LC72A-04I/SO Datasheet - Page 37

• Manufacturer Part Number: PIC16LC72A-04I/SO
• Description: IC MCU OTP 2KX14 A/D PWM 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16LC72A-04I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 5x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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:
Timer Prescaler (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
1999 Microchip Technology Inc.
Set the PWM period by writing to the PR2 regis-
ter.
Set the PWM on-time 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
—
—
—
—
TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000
PEIE
ADIF
ADIE
Bit 6
—
CCP1X
Bit 5
T0IE
—
—
1.22 kHz 4.88 kHz 19.53 kHz 78.12 kHz 156.3 kHz 208.3 kHz
0xFF
16
10
Preliminary
CCP1Y
INTE
Bit 4
—
—
0xFF
10
CCP1M3 CCP1M2 CCP1M1 CCP1M0 --00 0000 --00 0000
4
SSPIF
SSPIE
RBIE
Bit 3
CCP1IE
CCP1IF
0xFF
Bit 2
T0IF
10
1
PIC16C62B/72A
TMR2IF
TMR2IE
Bit 1
INTF
0x3F
1
8
TMR1IE -0-- 0000 -0-- 0000
TMR1IF
RBIF
Bit 0
0x1F
1
7
1111 1111 1111 1111
0000 000x 0000 000u
-0-- 0000 -0-- 0000
0000 0000 0000 0000
1111 1111 1111 1111
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
DS35008B-page 37
Value on
POR,
BOR
0x17
5.5
1
Value on
all other
resets