PIC12F635/PIC16F636/639
Table of Contents
1.0 Device Overview .......................................................................................................................................................................... 9
2.0 Memory Organization................................................................................................................................................................. 17
3.0 Clock Sources ............................................................................................................................................................................ 35
4.0 I/O Ports ..................................................................................................................................................................................... 47
5.0 Timer0 Module ........................................................................................................................................................................... 61
6.0 Timer1 Module with Gate Control............................................................................................................................................... 64
7.0 Comparator Module.................................................................................................................................................................... 71
8.0 Programmable Low-Voltage Detect (PLVD) Module.................................................................................................................. 87
9.0 Data EEPROM Memory ............................................................................................................................................................. 91
®
10.0 KEELOQ Compatible Cryptographic Module ............................................................................................................................. 95
11.0 Analog Front-End (AFE) Functional Description (PIC16F639 Only) .......................................................................................... 97
12.0 Special Features of the CPU.................................................................................................................................................... 129
13.0 Instruction Set Summary.......................................................................................................................................................... 149
14.0 Development Support............................................................................................................................................................... 159
15.0 Electrical Specifications............................................................................................................................................................ 163
16.0 DC and AC Characteristics Graphs and Tables....................................................................................................................... 191
17.0 Packaging Information.............................................................................................................................................................. 211
On-Line Support
223
Systems Information and Upgrade Hot Line ..................................................................................................................................... 223
Reader Response............................................................................................................................................................................. 224
Appendix A: Data Sheet Revision History......................................................................................................................................... 225
Product Identification System ........................................................................................................................................................... 231
Worldwide Sales and Service ........................................................................................................................................................... 232
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at docerrors@microchip.com or fax the Reader Response Form in the back of this data sheet to (480) 792-4150. We
welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
•
•
Microchip’s Worldwide Web site; http://www.microchip.com
Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are
using.
Customer Notification System
Register on our web site at www.microchip.com to receive the most current information on all of our products.
© 2007 Microchip Technology Inc.
DS41232D-page 7
MICROCHIP [ MICROCHIP ]
