© 2009 Microchip Technology Inc.
DS41236E
PIC12F508/509/16F505
Data Sheet
8/14-Pin, 8-Bit Flash Microcontrollers
DS41236E-page 2
© 2009 Microchip Technology Inc.
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and may be superseded by updates.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.
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
K
EE
L
OQ
, K
EE
L
OQ
logo, MPLAB, PIC, PICmicro, PICSTART,
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, PIC
32
logo, 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.
© 2009, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
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 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.
© 2009 Microchip Technology Inc.
DS41236E-page 3
PIC12F508/509/16F505
Devices Included In This Data Sheet:
High-Performance RISC CPU:
• Only 33 Single-Word Instructions to Learn
• All Single-Cycle Instructions Except for Program
Branches, which are Two-Cycle
• 12-Bit Wide Instructions
• 2-Level Deep Hardware Stack
• Direct, Indirect and Relative Addressing modes
for Data and Instructions
• 8-Bit Wide Data Path
• 8 Special Function Hardware Registers
• Operating Speed:
- DC – 20 MHz clock input (PIC16F505 only)
- DC – 200 ns instruction cycle (PIC16F505
only)
- DC – 4 MHz clock input
- DC – 1000 ns instruction cycle
Special Microcontroller Features:
• 4 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-Wp from Sleep on Pin Change
• Selectable Oscillator Options:
- INTRC: 4 MHz precision Internal oscillator
- EXTRC: External low-cost RC oscillator
- XT:
Standard crystal/resonator
- HS:
High-speed crystal/resonator
(PIC16F505 only)
- LP:
Power-saving, low-frequency crystal
- EC:
High-speed external clock input
(PIC16F505 only)
Low-Power Features/CMOS Technology:
• Operating Current:
- < 175
μA @ 2V, 4 MHz, typical
• Standby Current:
- 100 nA @ 2V, typical
• Low-Power, High-Speed Flash Technology:
- 100,000 Flash endurance
- > 40 year retention
• 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
Peripheral Features (PIC12F508/509):
• 6 I/O Pins:
- 5 I/O pins with individual direction control
- 1 input only pin
- High current sink/source for direct LED drive
- Wake-on-change
- Weak pull-ups
• 8-Bit Real-Time Clock/Counter (TMR0) with 8-Bit
Programmable Prescaler
Peripheral Features (PIC16F505):
• 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-on-change
- Weak pull-ups
• 8-Bit Real-Time Clock/Counter (TMR0) with 8-Bit
Programmable Prescaler
• PIC12F508
• PIC12F509
• PIC16F505
8/14-Pin, 8-Bit Flash Microcontrollers
PIC12F508/509/16F505
DS41236E-page 4
© 2009 Microchip Technology Inc.
Pin Diagrams
PIC16F505 16-Pin Diagram (QFN)
PDIP, SOIC, TSSOP
V
DD
RB5/OSC1/CLKIN
RB4/OSC2/CLKOUT
RB3/MCLR/V
PP
1
2
3
4
V
SS
RB0/ICSPDAT
14
13
12
11
P
IC
1
6F
50
5
5
6
7
10
9
8
RC5/T0CKI
RC4
RC3
RB1/ICSPCLK
RB2
RC0
RC1
RC2
PDIP, SOIC, MSOP
V
DD
GP5/OSC1/CLKIN
GP4/OSC2
GP3/MCLR/V
PP
1
2
3
4
V
SS
GP0/ICSPDAT
8
7
6
5
P
IC
12F
50
8/5
0
9
GP1/ICSPCLK
GP2/T0CKI
DFN
P
IC
1
2F
508
/50
9
1
2
3
4
8
7
6
5
V
SS
GP0/ICSPDAT
GP1/ICSPCLK
GP2/T0CKI
V
DD
GP5/OSC1/CLKIN
GP4/OSC2
GP3/MCLR/V
PP
1
2
3
4
9
10
11
12
5
6
7
8
16
15
14
13
PIC16F505
RB5/OSC1/CLKIN
RB4/OSC2/CLKOUT
RB3/MCLR/V
PP
RC5/TOCKI
V
DD
NC
NC
V
SS
RB0/ICSPDAT
RB1/ICSPCLK
RB2
RC0
RC
4
RC
3
RC
2
RC
1
© 2009 Microchip Technology Inc.
DS41236E-page 5
PIC12F508/509/16F505
Device
Program Memory
Data Memory
I/O
Timers
8-bit
Flash (words)
SRAM (bytes)
PIC12F508
512
25
6
1
PIC12F509
1024
41
6
1
PIC16F505
1024
72
12
1
PIC12F508/509/16F505
DS41236E-page 6
© 2009 Microchip Technology Inc.
Table of Contents
1.0
General Description...................................................................................................................................................................... 7
2.0
PIC12F508/509/16F505 Device Varieties ................................................................................................................................... 9
3.0
Architectural Overview ............................................................................................................................................................... 11
4.0
Memory Organization ................................................................................................................................................................. 17
5.0
I/O Port ....................................................................................................................................................................................... 31
6.0
Timer0 Module and TMR0 Register ........................................................................................................................................... 35
7.0
Special Features Of The CPU .................................................................................................................................................... 41
8.0
Instruction Set Summary ............................................................................................................................................................ 57
9.0
Development Support................................................................................................................................................................. 65
10.0 Electrical Characteristics ............................................................................................................................................................ 69
11.0 DC and AC Characteristics Graphs and Charts ......................................................................................................................... 81
12.0 Packaging Information................................................................................................................................................................ 91
Index .................................................................................................................................................................................................. 105
The Microchip Web Site ..................................................................................................................................................................... 107
Customer Change Notification Service .............................................................................................................................................. 107
Customer Support .............................................................................................................................................................................. 107
Reader Response .............................................................................................................................................................................. 108
Product Identification System............................................................................................................................................................. 109
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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).
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An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
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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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© 2009 Microchip Technology Inc.
DS41236E-page 7
PIC12F508/509/16F505
1.0
GENERAL DESCRIPTION
The PIC12F508/509/16F505 devices from Microchip
Technology are low-cost, high-performance, 8-bit,
fully-static, Flash-based CMOS microcontrollers. They
employ a RISC architecture with only 33 single-word/
single-cycle instructions. All instructions are single
cycle (200
μs) except for program branches, which
take two cycles. The PIC12F508/509/16F505 devices
deliver performance an order of magnitude higher than
their competitors in the same price category. The 12-bit
wide instructions are highly symmetrical, resulting in a
typical 2:1 code compression over other 8-bit
microcontrollers in its class. The easy to use and easy
to remember instruction set reduces development time
significantly.
The PIC12F508/509/16F505 products are equipped
with special features that reduce system cost and
power requirements. The Power-on Reset (POR) and
Device Reset Timer (DRT) eliminate the need for exter-
nal Reset circuitry. There are four oscillator configura-
tions to choose from (six on the PIC16F505), including
INTRC Internal Oscillator mode and the power-saving
LP (Low-Power) Oscillator mode. Power-Saving Sleep
mode, Watchdog Timer and code protection features
improve system cost, power and reliability.
The PIC12F508/509/16F505 devices are available in
the cost-effective Flash programmable version, which
is suitable for production in any volume. The customer
can take full advantage of Microchip’s price leadership
in Flash programmable microcontrollers, while
benefiting from the Flash programmable flexibility.
The PIC12F508/509/16F505 products are supported
by a full-featured macro assembler, a software simula-
tor, an in-circuit emulator, a ‘C’ compiler, a low-cost
development programmer and a full featured program-
mer. All the tools are supported on IBM
®
PC and
compatible machines.
1.1
Applications
The PIC12F508/509/16F505 devices fit in applications
ranging from personal care appliances and security
systems to low-power remote transmitters/receivers.
The Flash technology makes customizing application
programs (transmitter codes, appliance settings,
receiver frequencies, etc.) extremely fast and conve-
nient. The small footprint packages, for through hole or
surface mounting, make these microcontrollers perfect
for applications with space limitations. Low cost, low
power, high performance, ease-of-use and I/O flexibil-
ity make the PIC12F508/509/16F505 devices very ver-
satile even in areas where no microcontroller use has
been considered before (e.g., timer functions, logic and
PLDs in larger systems and coprocessor applications).
TABLE 1-1:
PIC12F508/509/16F505 DEVICES
PIC12F508
PIC12F509
PIC16F505
Clock
Maximum Frequency of Operation (MHz)
4
4
20
Memory
Flash Program Memory (words)
512
1024
1024
Data Memory (bytes)
25
41
72
Peripherals
Timer Module(s)
TMR0
TMR0
TMR0
Wake-up from Sleep on Pin Change
Yes
Yes
Yes
Features
I/O Pins
5
5
11
Input Pins
1
1
1
Internal Pull-ups
Yes
Yes
Yes
In-Circuit Serial Programming
Yes
Yes
Yes
Number of Instructions
33
33
33
Packages
8-pin PDIP, SOIC,
MSOP, DFN
8-pin PDIP, SOIC,
MSOP, DFN
14-pin PDIP, SOIC,
TSSOP
The PIC12F508/509/16F505 devices have Power-on Reset, selectable Watchdog Timer, selectable code-protect, high I/O current
capability and precision internal oscillator.
The PIC12F508/509/16F505 devices use serial programming with data pin RB0/GP0 and clock pin RB1/GP1.
PIC12F508/509/16F505
DS41236E-page 8
© 2009 Microchip Technology Inc.
NOTES:
© 2009 Microchip Technology Inc.
DS41236E-page 9
PIC12F508/509/16F505
2.0
PIC12F508/509/16F505 DEVICE
VARIETIES
A variety of packaging options are available. Depend-
ing on application and production requirements, the
proper device option can be selected using the
information in this section. When placing orders, please
use the PIC12F508/509/16F505 Product Identification
System at the back of this data sheet to specify the
correct part number.
2.1
Quick Turn Programming (QTP)
Devices
Microchip offers a QTP programming service for
factory production orders. This service is made
available for users who choose not to program
medium-to-high quantity units and whose code
patterns have stabilized. The devices are identical to
the Flash devices but with all Flash locations and fuse
options already programmed by the factory. Certain
code and prototype verification procedures do apply
before production shipments are available. Please
contact your local Microchip Technology sales office for
more details.
2.2
Serialized Quick Turn
Programming
SM
(SQTP
SM
) Devices
Microchip offers a unique programming service, where
a few user-defined locations in each device are
programmed with different serial numbers. The serial
numbers may be random, pseudo-random or
sequential.
Serial programming allows each device to have a
unique number, which can serve as an entry code,
password or ID number.
PIC12F508/509/16F505
DS41236E-page 10
© 2009 Microchip Technology Inc.
NOTES: