Datasheet

© 2007 Microchip Technology Inc. Preliminary DS39631B-page 381
PIC18F2420/2520/4420/4520
Program Memory
and Extended Instruction Set ..................................... 72
Code Protection .......................................................264
Instructions .................................................................58
Two-Word ..........................................................58
Interrupt Vector ..........................................................53
Look-up Tables .......................................................... 56
Map and Stack (diagram) ........................................... 53
Reset Vector .............................................................. 53
Program Verification and Code Protection ....................... 263
Associated Registers ............................................... 263
Programming, Device Instructions ...................................267
PSP. See Parallel Slave Port.
Pulse-Width Modulation. See PWM (CCP Module)
and PWM (ECCP Module).
PUSH ...............................................................................296
PUSH and POP Instructions ..............................................55
PUSHL ............................................................................. 312
PWM (CCP Module)
Associated Registers ............................................... 146
Auto-Shutdown (CCP1 only) ....................................145
CCPR1H:CCPR1L Registers ................................... 149
Duty Cycle ........................................................ 144, 150
Example Frequencies/Resolutions .................. 145, 150
Period ............................................................... 144, 149
Setup for PWM Operation ........................................145
TMR2 to PR2 Match ........................................ 144, 149
PWM (ECCP Module) ......................................................149
Direction Change in Full-Bridge
Output Mode .................................................... 154
Effects of a Reset ..................................................... 159
Enhanced PWM Auto-Shutdown ............................. 156
Full-Bridge Application Example .............................. 154
Full-Bridge Mode ...................................................... 153
Half-Bridge Mode ..................................................... 152
Half-Bridge Output Mode
Applications Example ......................................152
Operation in Power Managed Modes ...................... 159
Operation with Fail-Safe Clock Monitor ...................159
Output Configurations .............................................. 150
Output Relationships (Active-High) ..........................151
Output Relationships (Active-Low) ...........................151
Programmable Dead-Band Delay ............................ 156
Setup for PWM Operation ........................................159
Start-up Considerations ........................................... 158
Q
Q Clock ....................................................................145, 150
R
RAM. See Data Memory.
RBIF Bit ............................................................................108
RC Oscillator ......................................................................25
RCIO Oscillator Mode ................................................ 25
RC_IDLE Mode .................................................................. 39
RC_RUN Mode ..................................................................35
RCALL ............................................................................. 297
RCON Register
Bit Status During Initialization ....................................48
Register File .......................................................................62
Register File Summary ................................................ 64–66
Registers
ADCON0 (A/D Control 0) ......................................... 223
ADCON1 (A/D Control 1) ......................................... 224
ADCON2 (A/D Control 2) ......................................... 225
BAUDCON (Baud Rate Control) .............................. 204
CCP1CON (Enhanced
Capture/Compare/PWM Control 1) ................. 147
CCPxCON (Standard
Capture/Compare/PWM Control) .................... 139
CMCON (Comparator Control) ................................ 233
CONFIG1H (Configuration 1 High) .......................... 250
CONFIG2H (Configuration 2 High) .......................... 252
CONFIG2L (Configuration 2 Low) ........................... 251
CONFIG3H (Configuration 3 High) .......................... 253
CONFIG4L (Configuration 4 Low) ........................... 253
CONFIG5H (Configuration 5 High) .......................... 254
CONFIG5L (Configuration 5 Low) ........................... 254
CONFIG6H (Configuration 6 High) .......................... 255
CONFIG6L (Configuration 6 Low) ........................... 255
CONFIG7H (Configuration 7 High) .......................... 256
CONFIG7L (Configuration 7 Low) ........................... 256
CVRCON (Comparator Voltage
Reference Control) .......................................... 239
DEVID1 (Device ID 1) .............................................. 257
DEVID2 (Device ID 2) .............................................. 257
ECCP1AS (ECCP Auto-Shutdown Control) ............ 157
EECON1 (Data EEPROM Control 1) ................... 75, 84
HLVDCON (High/Low-Voltage Detect Control) ....... 243
INTCON (Interrupt Control) ....................................... 93
INTCON2 (Interrupt Control 2) .................................. 94
INTCON3 (Interrupt Control 3) .................................. 95
IPR1 (Peripheral Interrupt Priority 1) ....................... 100
IPR2 (Peripheral Interrupt Priority 2) ....................... 101
OSCCON (Oscillator Control) .................................... 30
OSCTUNE (Oscillator Tuning) ................................... 27
PIE1 (Peripheral Interrupt Enable 1) ......................... 98
PIE2 (Peripheral Interrupt Enable 2) ......................... 99
PIR1 (Peripheral Interrupt Request (Flag) 1) ............. 96
PIR2 (Peripheral Interrupt Request (Flag) 2) ............. 97
PWM1CON (PWM Configuration) ........................... 156
RCON (Reset Control) ....................................... 42, 102
RCSTA (Receive Status and Control) ..................... 203
SSPCON1 (MSSP Control 1, I
2
C Mode) ................. 172
SSPCON1 (MSSP Control 1, SPI Mode) ................ 163
SSPCON2 (MSSP Control 2, I
2
C Mode) ................. 173
SSPSTAT (MSSP Status, I
2
C Mode) ...................... 171
SSPSTAT (MSSP Status, SPI Mode) ...................... 162
Status ........................................................................ 67
STKPTR (Stack Pointer) ............................................ 55
T0CON (Timer0 Control) ......................................... 123
T1CON (Timer1 Control) ......................................... 127
T2CON (Timer2 Control) ......................................... 133
T3CON (Timer3 Control) ......................................... 135
TRISE (PORTE/PSP Control) ................................. 118
TXSTA (Transmit Status and Control) ..................... 202
WDTCON (Watchdog Timer Control) ...................... 259
RESET ............................................................................. 297
Reset State of Registers .................................................... 48
Resets ....................................................................... 41, 249
Brown-out Reset (BOR) ........................................... 249
Oscillator Start-up Timer (OST) ............................... 249
Power-on Reset (POR) ............................................ 249
Power-up Timer (PWRT) ......................................... 249