18F452 datasheet(320/332 Pages) MICROCHIP

320 / 332 page

PIC18FXX2

DS39564B-page 318

 2002 Microchip Technology Inc.

CALL ................................................................................ 226

Capture (CCP Module) ..................................................... 119

Associated Registers ............................................... 121

CCP Pin Configuration ............................................. 119

CCPR1H:CCPR1L Registers ................................... 119

Software Interrupt ..................................................... 119

Timer1/Timer3 Mode Selection ................................ 119

Capture/Compare/PWM (CCP) ........................................ 117

Capture Mode. See Capture

CCP1 ........................................................................ 118

CCPR1H Register ............................................ 118

CCPR1L Register ............................................ 118

CCP2 ........................................................................ 118

CCPR2H Register ............................................ 118

CCPR2L Register ............................................ 118

Compare Mode. See Compare

Interaction of Two CCP Modules ............................. 118

PWM Mode. See PWM

Timer Resources ...................................................... 118

Clocking Scheme/Instruction Cycle .................................... 39

CLRF ................................................................................ 227

CLRWDT .......................................................................... 227

Code Examples

16 x 16 Signed Multiply Routine ................................. 72

16 x 16 Unsigned Multiply Routine ............................. 72

8 x 8 Signed Multiply Routine ..................................... 71

8 x 8 Unsigned Multiply Routine ................................. 71

Changing Between Capture Prescalers ................... 119

Data EEPROM Read ................................................. 67

Data EEPROM Refresh Routine ................................ 68

Data EEPROM Write .................................................. 67

Erasing a FLASH Program Memory Row .................. 60

Fast Register Stack .................................................... 39

How to Clear RAM (Bank1) Using

Indirect Addressing ............................................ 50

Initializing PORTA ...................................................... 87

Initializing PORTB ...................................................... 90

Initializing PORTC ...................................................... 93

Initializing PORTD ...................................................... 95

Initializing PORTE ...................................................... 97

Loading the SSPBUF (SSPSR) Register ................. 128

Reading a FLASH Program Memory Word ................ 59

Saving STATUS, WREG and BSR

Registers in RAM ............................................... 85

Writing to FLASH Program Memory ..................... 62–63

Code Protection ............................................................... 195

COMF ............................................................................... 228

Compare (CCP Module) ................................................... 120

Associated Registers ............................................... 121

CCP Pin Configuration ............................................. 120

CCPR1 Register ....................................................... 120

Software Interrupt ..................................................... 120

Special Event Trigger ........................109, 115, 120, 188

Timer1/Timer3 Mode Selection ................................ 120

Configuration Bits ............................................................. 195

Context Saving During Interrupts ....................................... 85

Conversion Considerations .............................................. 314

CPFSEQ .......................................................................... 228

CPFSGT ........................................................................... 229

CPFSLT ........................................................................... 229

Data EEPROM Memory

Associated Registers ................................................. 69

EEADR Register ........................................................ 65

EECON1 Register ...................................................... 65

EECON2 Register ...................................................... 65

Operation During Code Protect ................................. 68

Protection Against Spurious Write ............................. 68

Reading ..................................................................... 67

Using .......................................................................... 68

Write Verify ................................................................ 68

Writing ........................................................................ 67

Data Memory ..................................................................... 42

General Purpose Registers ....................................... 42

Map for PIC18F242/442 ............................................ 43

Map for PIC18F252/452 ............................................ 44

Special Function Registers ........................................ 42

DAW ................................................................................ 230

DC and AC Characteristics

Graphs and Tables .................................................. 289

DC Characteristics ....................................................261, 265

DCFSNZ .......................................................................... 231

DECF ............................................................................... 230

DECFSZ .......................................................................... 231

Development Support ...................................................... 253

Device Differences ........................................................... 313

Device Overview .................................................................. 7

Features ....................................................................... 7

Direct Addressing ............................................................... 51

Example ..................................................................... 49

Electrical Characteristics .................................................. 259

Errata ................................................................................... 5

Firmware Instructions ....................................................... 211

FLASH Program Memory ................................................... 55

Associated Registers ................................................. 63

Control Registers ....................................................... 56

Erase Sequence ........................................................ 60

Erasing ....................................................................... 60

Operation During Code Protect ................................. 63

Reading ..................................................................... 59

TABLAT Register ....................................................... 58

Table Pointer ............................................................. 58

Boundaries Based on Operation ........................ 58

Table Pointer Boundaries .......................................... 58

Table Reads and Table Writes .................................. 55

Block Diagrams

Reads from FLASH Program Memory ....... 59

Writing to .................................................................... 61

Protection Against Spurious Writes ................... 63

Unexpected Termination .................................... 63

Write Verify ........................................................ 63

General Call Address Support ......................................... 148

GOTO .............................................................................. 232

18F452 Datasheet(PDF) 320 Page - Microchip Technology

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