PIC18F6525/6621/8525/8621
Table of Contents
1.0 Device Overview .......................................................................................................................................................................... 7
2.0 Oscillator Configurations ............................................................................................................................................................ 21
3.0 Reset.......................................................................................................................................................................................... 29
4.0 Memory Organization................................................................................................................................................................. 39
5.0 Flash Program Memory.............................................................................................................................................................. 61
6.0 External Memory Interface ......................................................................................................................................................... 71
7.0 Data EEPROM Memory ............................................................................................................................................................. 79
8.0 8 x 8 Hardware Multiplier............................................................................................................................................................ 85
9.0 Interrupts .................................................................................................................................................................................... 87
10.0 I/O Ports ................................................................................................................................................................................... 103
11.0 Timer0 Module ......................................................................................................................................................................... 131
12.0 Timer1 Module ......................................................................................................................................................................... 135
13.0 Timer2 Module ......................................................................................................................................................................... 141
14.0 Timer3 Module ......................................................................................................................................................................... 143
15.0 Timer4 Module ......................................................................................................................................................................... 147
16.0 Capture/Compare/PWM (CCP) Modules ................................................................................................................................. 149
17.0 Enhanced Capture/Compare/PWM (ECCP) Module................................................................................................................ 157
18.0 Master Synchronous Serial Port (MSSP) Module .................................................................................................................... 173
19.0 Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART)............................................................... 213
20.0 10-Bit Analog-to-Digital Converter (A/D) Module ..................................................................................................................... 233
21.0 Comparator Module.................................................................................................................................................................. 243
22.0 Comparator Voltage Reference Module................................................................................................................................... 249
23.0 Low-Voltage Detect.................................................................................................................................................................. 253
24.0 Special Features of the CPU.................................................................................................................................................... 259
25.0 Instruction Set Summary.......................................................................................................................................................... 275
26.0 Development Support............................................................................................................................................................... 317
27.0 Electrical Characteristics.......................................................................................................................................................... 323
28.0 DC and AC Characteristics Graphs And Tables ...................................................................................................................... 357
29.0 Packaging Information.............................................................................................................................................................. 373
Appendix A: Revision History............................................................................................................................................................. 377
Appendix B: Device Differences......................................................................................................................................................... 377
Appendix C: Conversion Considerations ........................................................................................................................................... 378
Appendix D: Migration From Mid-Range to Enhanced Devices......................................................................................................... 378
Appendix E: Migration From High-End to Enhanced Devices............................................................................................................ 379
Index .................................................................................................................................................................................................. 381
On-Line Support................................................................................................................................................................................. 391
Systems Information and Upgrade Hot Line ...................................................................................................................................... 391
Reader Response .............................................................................................................................................................................. 392
PIC18F6525/6621/8525/8621 Product Identification System ............................................................................................................ 393
DS39612B-page 4
2005 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
