PIC18F4580-I/P Microchip Technology Inc., PIC18F4580-I/P Datasheet - Page 143
![no-image](/images/manufacturer_photos/0/4/440/microchip_technology_inc__sml.jpg)
PIC18F4580-I/P
Manufacturer Part Number
PIC18F4580-I/P
Description
40 PIN, 32 KB FLASH, 1536 RAM, 36 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4580-IP.pdf
(402 pages)
Specifications of PIC18F4580-I/P
A/d Inputs
11-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
CAN/I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
32K Bytes
Ram Size
1.5K Bytes
Speed
40 MHz
Timers
1-8 bit, 3-16 bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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16.5.8
The following steps should be taken when configuring
the ECCP1 module for PWM operation:
1.
TABLE 16-5:
2004 Microchip Technology Inc.
INTCON
RCON
IPR2
PIR2
PIE2
TMR2
PR2
T2CON
TRISD
ECCPR1H
ECCPR1L
ECCP1CON EPWM1M1 EPWM1M0
ECCPAS
ECCP1DEL
Legend:
Name
Configure the PWM module:
a)
b)
c)
d)
e)
Disable the ECCP1/P1A, P1B, P1C and/or
P1D outputs by setting the respective TRISD
bits.
Set the PWM period by loading the PR2
register.
Set the PWM duty cycle by loading the
ECCPR1L register and ECCP1CON<5:4>
bits.
Configure the ECCP1 module for the
desired PWM operation by loading the
ECCP1CON register with the appropriate
value. With the ECCP1M<3:0> bits, select
the active-high/low levels for each PWM
output. With the EPWM1M<1:0> bits, select
one of the available output modes.
For Half-Bridge Output mode, set the dead-
band delay by loading the ECCP1DEL
register with the appropriate value.
x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the ECCP module.
SETUP FOR PWM OPERATION
Timer2 Module Register
Timer2 Module Period Register
PORTD Data Direction Register
Enhanced Capture/Compare/PWM Register 1 High Byte
Enhanced Capture/Compare/PWM Register 1 Low Byte
ECCPASE
GIE/GIEH
EPDC7
IPEN
Bit 7
—
—
—
—
REGISTERS ASSOCIATED WITH ENHANCED PWM AND TIMER2
PEIE/GIEL
ECCPAS2
TOUTPS3
EPDC6
CMIP
CMIF
CMIE
Bit 6
—
TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000
ECCPAS1 ECCPAS0 PSSAC1
TMR0IE
EDC1B1
EPDC5
Bit 5
—
—
—
—
EDC1B0 ECCP1M3 ECCP1M2 ECCP1M1 ECCP1M0 0000 0000 0000 0000
EPDC4
INT0IE
EEIP
EEIE
Bit 4
EEIF
RI
EPDC3
BCLIP
BCLIF
BCLIE
RBIE
Bit 3
TO
2.
3.
PSSAC0
TMR0IF
EPDC2
LVDIP
LVDIF
LVDIE
Configure and start TMR2:
a)
b)
c)
Enable PWM outputs after a new cycle has
started:
a)
b)
Bit 2
PD
Clear the TMR2 interrupt flag bit by clearing
the TMR2IF bit in the PIR1 register.
Set the TMR2 prescale value by loading the
T2CKPS bits (T2CON<1:0>).
Enable Timer2 by setting the TMR2ON bit
(T2CON<2>) register.
Wait until TMR2 overflows (TMR2IF bit
becomes a ‘1’). The new PWM cycle begins
here.
Enable the ECCP1/P1A, P1B, P1C and/or
P1D pin outputs by clearing the respective
TRISD bits.
PSSBD1
TMR3IP
TMR3IF
TMR3IE
EPDC1
INT0IF
Bit 1
POR
ECCP1IP -1-1 1111 -1-1 1111
ECCP1IE -0-0 0000 -0-0 0000
ECCP1IF -0-0 0000 -0-0 0000
PSSBD0 0000 0000 0000 0000
EPDC0
RBIF
PIC18FXX8
Bit 0
BOR
0000 000x 0000 000u
0--1 110q 0--0 011q
0000 0000 0000 0000
1111 1111 1111 1111
1111 1111 1111 1111
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
0000 0000 uuuu uuuu
POR, BOR
Value on
DS41159D-page 141
Value on
all other
Resets
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