PIC16F526T-E/ST [MICROCHIP]

PIC16F526

Data Sheet

14-Pin, 8-Bit Flash Microcontroller



2010 Microchip Technology Inc.

DS41326D

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and may be superseded by updates.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

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, dsPIC,

K

EE

L

OQ

, K

EE

L

OQ

logo, MPLAB, PIC, PICmicro, PICSTART,

PIC

32

logo, rfPIC and UNI/O are registered trademarks of

Microchip Technology Incorporated in the U.S.A. and other

countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,

MXDEV, MXLAB, SEEVAL 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, dsSPEAK, ECAN,

ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial

Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified

logo, MPLIB, MPLINK, mTouch, Octopus, Omniscient Code

Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,

PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance,

TSHARC, UniWinDriver, 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.

© 2010, Microchip Technology Incorporated, Printed in the

U.S.A., All Rights Reserved.

Printed on recycled paper.

ISBN: 978-1-60932-044-7

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

headquarters, design and wafer fabrication facilities in Chandler and

Tempe, Arizona; Gresham, Oregon and design centers in California

and India. The Company’s quality system processes and procedures

are for its PIC

®

MCUs and dsPIC

®

DSCs, K

EE

L

OQ

®

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.

DS41326D-page 2



2010 Microchip Technology Inc.

PIC16F526

14-Pin, 8-Bit Flash Microcontroller

High-Performance RISC CPU:

• Only 33 Single-Word Instructions

• All Single-Cycle Instructions except for Program

Branches which are Two-Cycle

• Two-Level Deep Hardware Stack

• Direct, Indirect and Relative Addressing modes

for Data and Instructions

• Operating Speed:

- DC – 20 MHz crystal oscillator

- DC – 200 ns instruction cycle

• On-chip Flash Program Memory:

- 1024 x 12

• General Purpose Registers (SRAM):

- 67 x 8

• Flash Data Memory:

- 64 x 8

Low-Power Features/CMOS Technology:

• Standby current:

- 100 nA @ 2.0V, typical

• Operating current:

- 11

A

@ 32 kHz, 2.0V, typical

- 175

A

@ 4 MHz, 2.0V, typical

• Watchdog Timer current:

- 1

A

@ 2.0V, typical

- 7

A

@ 5.0V, typical

• High Endurance Program and Flash Data Memory

cells:

- 100,000 write Program Memory endurance

- 1,000,000 write Flash Data Memory endurance

- Program and Flash Data retention: >40 years

• Fully Static Design

• Wide Operating Voltage Range: 2.0V to 5.5V:

- Wide temperature range

- Industrial: -40C to +85C

- Extended: -40C to +125C

Special Microcontroller Features:

• 8 MHz Precision Internal Oscillator:

- Factory calibrated to ±1%

• In-Circuit Serial Programming™ (ICSP™)

• In-Circuit Debugging (ICD) Support

• Power-On Reset (POR)

• Device Reset Timer (DRT)

• Watchdog Timer (WDT) with Dedicated On-Chip

RC Oscillator for Reliable Operation

• Programmable Code Protection

• Multiplexed MCLR Input Pin

• Internal Weak Pull-ups on I/O Pins

• Power-Saving Sleep mode

• Wake-Up from Sleep on Pin Change

• Selectable Oscillator Options:

- INTRC: 4 MHz or 8 MHz precision Internal

RC oscillator

- EXTRC: External low-cost RC oscillator

- XT:

Standard crystal/resonator

- HS:

High-speed crystal/resonator

- LP:

Power-saving, low-frequency crystal

- EC:

High-speed external clock input

Program

Memory

Flash (words)

PIC16F526

1024

Peripheral Features:

• 12 I/O Pins:

- 11 I/O pins with individual direction control

- 1 input-only pin

- High current sink/source for direct LED drive

- Wake-up on change

- Weak pull-ups

• 8-bit Real-time Clock/Counter (TMR0) with 8-bit

Programmable Prescaler

• Two Analog Comparators:

- Comparator inputs and output accessible

externally

- One comparator with 0.6V fixed on-chip

absolute voltage reference (V

REF

)

- One comparator with programmable on-chip

voltage reference (V

REF

)

• Analog-to-Digital (A/D) Converter:

- 8-bit resolution

- 3-channel external programmable inputs

- 1-channel internal input to internal absolute

0.6 voltage reference

Data Memory

SRAM (bytes)

67

Flash

(bytes)

64

I/O

Comparators

Timers 8-bit

Device

8-bit A/D

Channels

3

12

2

1



2010 Microchip Technology Inc.

DS41326D-page 3

PIC16F526

FIGURE 1-1:

14-PIN PDIP, SOIC, TSSOP DIAGRAM

V

DD

RB5/OSC1/CLKIN

RB4/OSC2/CLKOUT

RB3/MCLR/V

PP

RC5/T0CKI

RC4/C2OUT

RC3

1

PIC16F526

2

3

4

5

6

7

14

13

12

11

10

9

8

V

SS

RB0/C1IN+/AN0/ICSPDAT

RB1/C1IN-/AN1/ICSPCLK

RB2/C1OUT/AN2

RC0/C2IN+

RC1/C2IN-

RC2/CV

REF

FIGURE 1-2:

16-PIN QFN DIAGRAM

V

DD

PIC16F526

RB5/OSC1/CLKIN

RB4/OSC2/CLKOUT

RB3/MCLR/V

PP

RC5/T0CKI

1

16 15 14 13

12

11

10

9

7

8

GND

NC

NC

RB0/C1IN+/AN0/ICSPDAT

RB1/C1IN-/AN1/ICSPCLK

RB2/C1OUT/AN2

RC0/C2IN+

2

3

4

5

6

RC4/C2OUT

RC2/CV

REF

RC3

RC1/C2IN-

DS41326D-page 4



2010 Microchip Technology Inc.

PIC16F526

Table of Contents

1.0 General Description..................................................................................................................................................................... 7

2.0 PIC16F526 Device Varieties ...................................................................................................................................................... 9

3.0 Architectural Overview .............................................................................................................................................................. 11

4.0 Memory Organization ................................................................................................................................................................ 15

5.0 Flash Data Memory Control ...................................................................................................................................................... 23

6.0 I/O Port ...................................................................................................................................................................................... 27

7.0 Timer0 Module and TMR0 Register .......................................................................................................................................... 37

8.0 Special Features of the CPU..................................................................................................................................................... 43

9.0 Analog-to-Digital (A/D) Converter.............................................................................................................................................. 59

10.0 Comparator(s) ........................................................................................................................................................................... 63

11.0 Comparator Voltage Reference Module.................................................................................................................................... 69

12.0 Instruction Set Summary ........................................................................................................................................................... 71

13.0 Development Support................................................................................................................................................................ 79

14.0 Electrical Characteristics ........................................................................................................................................................... 83

15.0 DC and AC Characteristics Graphs and Charts ........................................................................................................................ 97

16.0 Packaging Information............................................................................................................................................................. 107

The Microchip Web Site .................................................................................................................................................................... 115

Customer Change Notification Service ............................................................................................................................................. 115

Customer Support ............................................................................................................................................................................. 115

Reader Response ............................................................................................................................................................................. 116

Index .................................................................................................................................................................................................. 117

Product Identification System................ ........................................................................................................................................... 119

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Most Current Data Sheet

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The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).

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To determine if an errata sheet exists for a particular device, please check with one of the following:

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

2010 Microchip Technology Inc.

DS41326D-page 5