PIC18F4321 datasheet(7/396 Pages) MICROCHIP

7 / 396 page

Preliminary

DS39689E-page 5

PIC18F4321 FAMILY

Table of Contents

1.0

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

2.0

Oscillator Configurations ............................................................................................................................................................ 23

3.0

Power-Managed Modes ............................................................................................................................................................. 33

4.0

Reset .......................................................................................................................................................................................... 41

5.0

Memory Organization ................................................................................................................................................................. 53

6.0

Flash Program Memory.............................................................................................................................................................. 73

7.0

Data EEPROM Memory ............................................................................................................................................................. 83

8.0

8 x 8 Hardware Multiplier............................................................................................................................................................ 89

9.0

Interrupts .................................................................................................................................................................................... 91

10.0 I/O Ports ................................................................................................................................................................................... 105

11.0 Timer0 Module ......................................................................................................................................................................... 123

12.0 Timer1 Module ......................................................................................................................................................................... 127

13.0 Timer2 Module ......................................................................................................................................................................... 133

14.0 Timer3 Module ......................................................................................................................................................................... 135

15.0 Capture/Compare/PWM (CCP) Modules ................................................................................................................................. 139

16.0 Enhanced Capture/Compare/PWM (ECCP) Module................................................................................................................ 147

17.0 Master Synchronous Serial Port (MSSP) Module .................................................................................................................... 161

18.0 Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) ............................................................... 205

19.0 10-Bit Analog-to-Digital Converter (A/D) Module ..................................................................................................................... 227

20.0 Comparator Module.................................................................................................................................................................. 237

21.0 Comparator Voltage Reference Module................................................................................................................................... 243

22.0 High/Low-Voltage Detect (HLVD)............................................................................................................................................. 247

23.0 Special Features of the CPU.................................................................................................................................................... 253

24.0 Instruction Set Summary .......................................................................................................................................................... 273

25.0 Development Support............................................................................................................................................................... 323

26.0 Electrical Characteristics .......................................................................................................................................................... 327

27.0 DC and AC Characteristics Graphs and Tables....................................................................................................................... 365

28.0 Packaging Information.............................................................................................................................................................. 367

Appendix A: Revision History............................................................................................................................................................. 377

Appendix B: Device Differences ........................................................................................................................................................ 377

Appendix C: Conversion Considerations ........................................................................................................................................... 378

Appendix D: Migration from Baseline to Enhanced Devices.............................................................................................................. 378

Appendix E: Migration From Mid-Range to Enhanced Devices ......................................................................................................... 379

Appendix F: Migration From High-End to Enhanced Devices............................................................................................................ 379

Index ................................................................................................................................................................................................. 381

The Microchip Web Site ..................................................................................................................................................................... 391

Customer Change Notification Service .............................................................................................................................................. 391

Customer Support .............................................................................................................................................................................. 391

Reader Response .............................................................................................................................................................................. 392

PIC18F2221/2321/4221/4321 Product Identification System ............................................................................................................ 393

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