PIC18LF8680-I/PT Microchip Technology, PIC18LF8680-I/PT Datasheet - Page 176

• Manufacturer Part Number: PIC18LF8680-I/PT
• Description: IC, 8BIT MCU, PIC18LF, 40MHZ, PLCC-64
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF8680-I/PT

• Controller Family/series: PIC18
• No. Of I/o's: 39
• Eeprom Memory Size: 1024Byte
• Ram Memory Size: 3328Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Core Size: 8 Bit
• Program Memory Size: 32768 Words
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 68
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 3.25K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Rohs Compliant: Yes
• Processor Series: PIC18LF
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3328 B
• Interface Type: I2C, SPI, AUSART, CAN
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 69
• Number Of Timers: 8
• 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, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM183032
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC18F6585/8585/6680/8680
The maximum PWM resolution (bits) for a given PWM
frequency is given by the following equation.
EQUATION 15-3:
TABLE 15-4:
TABLE 15-5:
DS30491C-page 174
INTCON
PIR1
PIE1
IPR1
TRISC
TMR2
PR2
T2CON
CCPR1L
CCPR1H
CCP1CON
CCPR2L
CCPR2H
CCP2CON
Legend:
Timer Prescaler (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
Note:
Name
PWM Resolution (max)
PWM Frequency
PORTC Data Direction Register
Timer2 Module Register
Timer2 Module Period 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)
x = unknown, u = unchanged, – = unimplemented, read as ‘0’. Shaded cells are not used by PWM and Timer2.
If the PWM duty cycle value is longer than
the PWM period, the CCP1 pin will not be
cleared.
GIE/GIEH PEIE/GIEL TMR0IE
PSPIF
PSPIE
PSPIP
P1M1
Bit 7
—
—
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 40 MHz
REGISTERS ASSOCIATED WITH PWM AND TIMER2
TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000
P1M0
ADIF
ADIE
ADIP
Bit 6
—
=
log
-----------------------------bits
log


DC1B1
DC2B1
---------------
F
F
RCIE
RCIP
RCIF
Bit 5
PWM
OSC
2
2.44 kHz


0FFh
16
10
DC1B0
DC2B0
INT0IE
Bit 4
TXIF
TXIE
TXIP
9.76 kHz
0FFh
CCP1M3
CCP2M3
SSPIE
SSPIP
10
SSPIF
RBIE
4
Bit 3
15.4.3
The following steps should be taken when configuring
the CCP module for PWM operation:
1.
2.
3.
4.
5.
39.06 kHz
CCP1M2
CCP2M2
TMR0IF
CCP1IF
CCP1IE
CCP1IP
Bit 2
0FFh
Set the PWM period by writing to the PR2
register.
Set the PWM duty cycle by writing to the
CCPRxL register and CCPxCON<5:4> bits.
Make the CCPx pin an output by clearing
corresponding TRIS bit.
Set the TMR2 prescale value and enable Timer2
by writing to T2CON.
Configure the CCPx module for PWM operation.
10
1
SETUP FOR PWM OPERATION
CCP1M1
CCP2M1
TMR2IE
TMR2IP
TMR2IF
INT0IF
Bit 1
156.3 kHz
3Fh
1
8
CCP1M0 0000 0000 0000 0000
CCP2M0 --00 0000 --00 0000
TMR1IE
TMR1IP
TMR1IF
 2004 Microchip Technology Inc.
Bit 0
RBIF
312.5 kHz
1Fh
0000 000x 0000 000u
0000 0000 0000 0000
0000 0000 0000 0000
1111 1111 1111 1111
1111 1111 1111 1111
0000 0000 0000 0000
1111 1111 1111 1111
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
POR, BOR
1
7
Value on
416.6 kHz
Value on
17h
all other
5.5
Resets
1