PIC12F635/PIC16F636/639

Data Sheet

8/14-Pin, Flash-Based 8-Bit

CMOS Microcontrollers

with nanoWatt Technology

*8-bit, 8-pin Devices Protected by Microchip’s Low Pin Count Patent: U. S. Patent No. 5,847,450. Additional U.S. and

foreign patents and applications may be issued or pending.

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and may be superseded by updates.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

devices in life support and/or safety applications is entirely at

the buyer’s risk, and the buyer agrees to defend, indemnify and

hold harmless Microchip from any and all damages, claims,

suits, or expenses resulting from such use. No licenses are

conveyed, implicitly or otherwise, under any Microchip

intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, Accuron,

dsPIC, K

EELOQ, KEELOQ logo, 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, Linear Active Thermistor, Migratable

Memory, MXDEV, MXLAB, PS logo, 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, CodeGuard,

dsPICDEM, dsPICDEM.net, dsPICworks, ECAN,

ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,

In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi,

MPASM, MPLAB Certified logo, MPLIB, MPLINK, PICkit,

PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal,

PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB,

rfPICDEM, Select Mode, Smart Serial, SmartTel, Total

Endurance, UNI/O, WiperLock and ZENA 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.

Printed on recycled paper.

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.

Microchip received ISO/TS-16949:2002 certification for its worldwide

headquarters, design and wafer fabrication facilities in Chandler and

Tempe, Arizona, Gresham, Oregon and Mountain View, California. The

Company’s quality system processes and procedures are for its PIC

MCUs and dsPIC

DSCs, 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.

PIC12F635/PIC16F636/639

High-Performance RISC CPU:

• Only 35 instructions to learn:

- All single-cycle instructions except branches

• Operating speed:

- DC – 20 MHz oscillator/clock input

- DC – 200 ns instruction cycle

• Interrupt capability

• 8-level deep hardware stack

• Direct, Indirect and Relative Addressing modes

Special Microcontroller Features:

• Precision Internal Oscillator:

- Factory calibrated to ±1%, typical

- Software selectable frequency range of

8 MHz to 125 kHz

- Software tunable

- Two-Speed Start-up mode

- Crystal fail detect for critical applications

- Clock mode switching during operation for

power savings

• Clock mode switching for low-power operation

• Power-Saving Sleep mode

• Wide operating voltage range (2.0V-5.5V)

• Industrial and Extended Temperature range

• Power-on Reset (POR)

• Wake-up Reset (WUR)

• Independent weak pull-up/pull-down resistors

• Programmable Low-Voltage Detect (PLVD)

• Power-up Timer (PWRT) and Oscillator Start-up

Timer (OST)

• Brown-out Reset (BOR) with software control

option

• Enhanced Low-Current Watchdog Timer (WDT)

with on-chip oscillator (software selectable

nominal 268 seconds with full prescaler) with

software enable

• Multiplexed Master Clear with pull-up/input pin

• Programmable code protection (program and

data independent)

• High-Endurance Flash/EEPROM cell:

- 100,000 write Flash endurance

- 1,000,000 write EEPROM endurance

- Flash/Data EEPROM Retention: > 40 years

Low-Power Features:

• Standby Current:

- 1 nA @ 2.0V, typical

• Operating Current:

-8.5μA @ 32 kHz, 2.0V, typical

-100μA @ 1 MHz, 2.0V, typical

• Watchdog Timer Current:

-1μA @ 2.0V, typical

Peripheral Features:

• 6/12 I/O pins with individual direction control:

- High-current source/sink for direct LED drive

- Interrupt-on-change pin

- Individually programmable weak pull-ups/

pull-downs

- Ultra Low-Power Wake-up

• Analog Comparator module with:

- Up to two analog comparators

- Programmable On-chip Voltage Reference

(CV

REF) module (% of VDD)

- Comparator inputs and outputs externally

accessible

• Timer0: 8-bit timer/counter with 8-bit

programmable prescaler

• Enhanced Timer1:

- 16-bit timer/counter with prescaler

- External Timer1 Gate (count enable)

- Option to use OSC1 and OSC2 in LP mode

as Timer1 oscillator if INTOSC mode

selected

•K

EELOQ

compatible hardware Cryptographic

module

• In-Circuit Serial Programming™ (ICSP™) via

two pins

Low-Frequency Analog Front-End

Features (PIC16F639 only):

• Three input pins for 125 kHz LF input signals

• High input detection sensitivity (3 mV

PP, typical)

• Demodulated data, Carrier clock or RSSI output

selection

• Input carrier frequency: 125 kHz, typical

• Input modulation frequency: 4 kHz, maximum

• 8 internal Configuration registers

• Bidirectional transponder communication

(LF talk back)

• Programmable antenna tuning capacitance

(up to 63 pF, 1 pF/step)

• Low standby current: 5 μA (with 3 channels

enabled), typical

• Low operating current: 15 μA (with 3 channels

enabled), typical

• Serial Peripheral Interface (SPI) with internal

MCU and external devices

• Supports Battery Back-up mode and batteryless

operation with external circuits

8/14-Pin Flash-Based, 8-Bit CMOS Microcontrollers

With nanoWatt Technology

Part #	PIC16F636-I/P
Description	MCU 8BIT RISC 3.5KB FLASH 2.5V - Rail/Tube
Category	IC
Availability	Out of Stock
Qty	0

PIC16F636-I/P

Related Items

Technical Document