PIC12F635/PIC16F636/639 8/14/20-Pin Low-Power Flash Microcontroller Product Brief High-Performance RISC CPU: Low-Power Features: • • • • • • Standby Current: - 1 nA @ 2.0V, typical • Operating Current: - 8.5 µA @ 32 kHz, 2.0V, typical - 100 µA @ 1 MHz, 2.0V, typical • Watchdog Timer Current: - 1 µA @ 2.0V, typical Operating speeds from DC – 20 MHz Interrupt capability 8-level deep hardware stack Direct, Indirect and Relative Addressing modes 35 single-word instructions: - All instructions single cycle except branches • On-chip Flash Program Memory: - 1024 x 14 for PIC12F635 - 2048 x 14 for PIC16F636/PIC16F639 • General Purpose Registers (SRAM): - 64 x 8 for PIC12F635 - 128 x 8 for PIC16F636/PIC16F639 • EEPROM Data Memory: - 128 x 8 for PIC12F635 - 256 x 8 for PIC16F636/PIC16F639 Special Microcontroller Features: • Precision Internal Oscillator: - Factory calibrated to ±1% - Software selectable frequency of 8 MHz to 31 kHz - Two-speed Start-up mode - Crystal fail detect for critical applications • Clock mode switching for low-power operation • Power-saving Sleep mode • Multiplexed Master Clear/Input-pin • Enhanced low-current Watchdog Timer (WDT) with on-chip oscillator (software selectable nominal 268 seconds with full prescaler) with software enable • In-Circuit Serial Programming™ (ICSP™) via two pins • Programmable code protection • Brown-out Reset (BOR) with software control option • Power-on Reset (POR) • Power-up Timer (PWRT) and Oscillator Start-up Timer (OST) • Wake-up Reset (WUR) • Wide operating voltage range (2.0V to 5.5V) • Industrial and extended temperature range • High Endurance Flash/EEPROM Cell: - 100,000 write Flash endurance - 1,000,000 write EEPROM endurance - Data EEPROM retention > 40 years 2004 Microchip Technology Inc. Peripheral Features: • 6 I/O pins (PIC12F635) 12 I/O pins (PIC16F636/639): - Individual direction control - High current source/sink for direct LED drive - Individually selectable weak pull-ups/pulldowns - Interrupt-on-pin change option • Ultra Low-Power Wake-Up (ULPWU) • Programmable Low-Voltage Detection (PLVD) with interrupt • Timer0: - 8-bit timer/counter with 8-bit programmable prescaler • Enhanced Timer1: - 16-bit timer/counter with programmable prescaler - External Gate Input mode - Option to use OSC1 and OSC2 in LP mode as Timer1 oscillator, if INTOSC mode is selected • KEELOQ® device compatible encryption/ decryption engine • Analog Comparator module with: - 1-2 analog comparators - Programmable on-chip voltage reference (CVREF) module (% of VDD) - Comparator inputs/outputs externally accessible Advance Information DS41187D-page 1 PIC12F635/PIC16F636/639 Low-Frequency Analog Front-End Features (PIC16F639 Only) • Low standby current: 5 µA (with 3 channels enabled) • Low operating current: 15 µA (with 3 channels enabled) • Serial Peripheral Interface (SPI™) with internal MCU and external devices • Three input pins for 125 kHz LF input signals • High input detection sensitivity (3 mVPP, typical) • Demodulated data, Carrier clock or RSSI output selection • 8 internal configuration registers • Bidirectional transponder communication (LF talk back) • Programmable antenna tuning capacitance (up to 63 pF, 1 pF/step) • Supports Battery Back-up mode and a no battery operation with external circuits Program Memory Data Memory Device I/O Comparators Low Frequency Analog Front-end Flash (words) SRAM (bytes) EEPROM (bytes) PIC12F635 1024 64 128 6 1 N PIC16F636 2048 128 256 12 2 N PIC16F639 2048 128 256 12 2 Y DS41187D-page 2 Advance Information 2004 Microchip Technology Inc. PIC12F635/PIC16F636/639 Pin Diagrams VDD 1 GP5/T1CKI/OSC1/CLKIN 2 GP4/T1G/OSC2/CLKOUT 3 GP3/MCLR/VPP 4 PIC12F635 8-Pin PDIP, SOIC, DFN-S 8 VSS 7 GP0/C1IN+/ICSPDAT 6 GP1/C1IN-/ICSPCLK 5 GP2/T0CKI/INT/C1OUT VDD RA5/T1CKI/OSC1/CLKIN RA4/T1G/OSC2/CLKOUT RA3/MCLR/VPP RC5 RC4/C2OUT RC3 1 2 3 4 5 6 7 PIC16F636 14-Pin PDIP, SOIC, TSSOP 14 13 12 11 10 9 8 VSS RA0/C1IN+/ICSPDAT RA1/C1IN-/VREF/ICSPCLK RA2/T0CKI/INT/C1OUT RC0/C2IN+ RC1/C2INRC2 20-Pin SSOP 2004 Microchip Technology Inc. 1 2 3 4 5 6 7 8 9 10 20 PIC16F639 VDD RA5/T1CKI/OSC1/CLKIN RA4/T1G/OSC2/CLKOUT RA3/MCLR/VPP RC5 RC4/C2OUT RC3/LFDATA/RSSI/CCLK/SDIO VDDT LCZ LCY 19 18 17 16 15 14 13 12 11 VSS RA0/C1IN+/ICSPDAT RA1/C1IN-/VREF/ICSPCLK RA2/TOCKI/INT/C1OUT RC0/C2IN+ RC1/C2IN-/CS RC2/SCLK/ALERT VSST LCCOM LCX Advance Information DS41187D-page 3 PIC12F635/PIC16F636/639 NOTES: DS41187D-page 4 Advance Information 2004 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC, and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2004, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company’s quality system processes and procedures are for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 2004 Microchip Technology Inc. Advance Information DS41187D-page 5 WORLDWIDE SALES AND SERVICE AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http:\\support.microchip.com Web Address: www.microchip.com Australia - Sydney Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 India - Bangalore Tel: 91-80-2229-0061 Fax: 91-80-2229-0062 China - Beijing Tel: 86-10-8528-2100 Fax: 86-10-8528-2104 India - New Delhi Tel: 91-11-5160-8631 Fax: 91-11-5160-8632 Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4420-9895 Fax: 45-4420-9910 China - Chengdu Tel: 86-28-8676-6200 Fax: 86-28-8676-6599 Japan - Kanagawa Tel: 81-45-471- 6166 Fax: 81-45-471-6122 France - Massy Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 China - Fuzhou Tel: 86-591-750-3506 Fax: 86-591-750-3521 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 Germany - Ismaning Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 Atlanta Alpharetta, GA Tel: 770-640-0034 Fax: 770-640-0307 Boston Westford, MA Tel: 978-692-3848 Fax: 978-692-3821 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260 Kokomo Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387 China - Hong Kong SAR Tel: 852-2401-1200 Fax: 852-2401-3431 China - Shanghai Tel: 86-21-5407-5533 Fax: 86-21-5407-5066 China - Shenyang Tel: 86-24-2334-2829 Fax: 86-24-2334-2393 China - Shenzhen Tel: 86-755-8203-2660 Fax: 86-755-8203-1760 China - Shunde Tel: 86-757-2839-5507 Fax: 86-757-2839-5571 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 England - Berkshire Tel: 44-118-921-5869 Fax: 44-118-921-5820 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 China - Qingdao Tel: 86-532-502-7355 Fax: 86-532-502-7205 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 San Jose Mountain View, CA Tel: 650-215-1444 Fax: 650-961-0286 Toronto Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509 09/27/04 DS41187D-page 6 Advance Information 2004 Microchip Technology Inc.