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PIC12C5XX

8-Pin, 8-Bit CMOS Microcontrollers

Devices included in this Data Sheet:

• PIC12C508 • PIC12C508A

• PIC12C509 • PIC12C509A

• PIC12CR509A

• PIC12CE518

• PIC12CE519

Peripheral Features:

• 8-bit real time clock/counter (TMR0) with 8-bit

programmable prescaler

• Power-On Reset (POR)

• Device Reset Timer (DRT)

• Watchdog Timer (WDT) with its own on-chip RC

oscillator for reliable operation

• Programmable code-protection

• 1,000,000 erase/write cycle EEPROM data

memory

• EEPROM data retention > 40 years

• Power saving SLEEP mode

• Wake-up from SLEEP on pin change

• Internal weak pull-ups on I/O pins

• Internal pull-up on MCLR pin

• Selectable oscillator options:

- INTRC: Internal 4 MHz RC oscillator

- EXTRC: External low-cost RC oscillator

- XT:

Standard crystal/resonator

- LP:

Power saving, low frequency crystal

Note:

Throughout this data sheet PIC12C5XX

refers to the PIC12C508, PIC12C509,

PIC12C508A, PIC12C509A,

PIC12CR509A, PIC12CE518 and

PIC12CE519. PIC12CE5XX refers to

PIC12CE518 and PIC12CE519.

High-Performance RISC CPU:

• Only 33 single word instructions to learn

• All instructions are single cycle (1

µs)

except for

program branches which are two-cycle

• Operating speed: DC - 4 MHz clock input

DC - 1

µs

instruction cycle

Memory

Device

PIC12C508

PIC12C508A

PIC12C509

PIC12C509A

PIC12CE518

PIC12CE519

PIC12CR509A

EPROM

Program

512 x 12

1024 x 12

512 x 12

1024 x 12

ROM

Program

RAM

Data

EEPROM

Data

CMOS Technology:

• Low power, high speed CMOS EPROM/ROM

technology

• Fully static design

• Wide operating voltage range

• Wide temperature range:

- Commercial: 0°C to +70°C

- Industrial: -40°C to +85°C

- Extended: -40°C to +125°C

• Low power consumption

- < 2 mA @ 5V, 4 MHz

- 15

µA

typical @ 3V, 32 KHz

- < 1

µA

typical standby current

•

12-bit wide instructions

8-bit wide data path

Seven special function hardware registers

Two-level deep hardware stack

Direct, indirect and relative addressing modes for

data and instructions

• Internal 4 MHz RC oscillator with programmable

calibration

• In-circuit serial programming

1999 Microchip Technology Inc.

DS40139E-page 1

PIC12C5XX

Pin Diagram - PIC12C508/509

PDIP, 208 mil SOIC, Windowed Ceramic Side Brazed

GP5/OSC1/CLKIN

GP4/OSC2

GP3/MCLR/V

GP0

GP1

GP2/T0CKI

PIC12C508

PIC12C509

Pin Diagram - PIC12C508A/509A,

PIC12CE518/519

PDIP, 150 & 208 mil SOIC, Windowed CERDIP

GP5/OSC1/CLKIN

GP4/OSC2

GP3/MCLR/V

GP0

GP1

GP2/T0CKI

PIC12C508A

PIC12C509A

PIC12CE518

PIC12CE519

Pin Diagram - PIC12CR509A

PDIP, 150 & 208 mil SOIC

GP5/OSC1/CLKIN

GP4/OSC2

GP3/MCLR/V

GP0

GP1

GP2/T0CKI

PIC12CR509A

Device Differences

Device

PIC12C508A

PIC12LC508A

PIC12C508

PIC12C509A

PIC12LC509A

PIC12C509

PIC12CR509A

PIC12CE518

PIC12LCE518

PIC12CE519

PIC12LCE519

Voltage

Range

3.0-5.5

2.5-5.5

3.0-5.5

2.5-5.5

3.0-5.5

2.5-5.5

3.0-5.5

2.5-5.5

Oscillator

See Note 1

Oscillator

Calibration

(Bits)

Process

Technology

(Microns)

0.7

0.9

0.7

0.9

0.7

Note 1:

If you change from the PIC12C50X to the PIC12C50XA or to the PIC12CR50XA, please verify

oscillator characteristics in your application.

Note 2:

See Section 7.2.5 for OSCCAL implementation differences.

DS40139E-page 2

1999 Microchip Technology Inc.

PIC12C5XX

TABLE OF CONTENTS

General Description............................................................................................................................................... 4

PIC12C5XX Device Varieties ................................................................................................................................ 7

Architectural Overview........................................................................................................................................... 9

Memory Organization .......................................................................................................................................... 13

I/O Port ................................................................................................................................................................ 21

Timer0 Module and TMR0 Register .................................................................................................................... 25

EEPROM Peripheral Operation........................................................................................................................... 29

Special Features of the CPU ............................................................................................................................... 35

Instruction Set Summary ..................................................................................................................................... 47

Development Support.......................................................................................................................................... 59

Electrical Characteristics - PIC12C508/PIC12C509............................................................................................ 65

DC and AC Characteristics - PIC12C508/PIC12C509 ........................................................................................ 75

Electrical Characteristics PIC12C508A/PIC12C509A/PIC12LC508A/PIC12LC509A/PIC12CR509A/

PIC12CE518/PIC12CE519/

PIC12LCE518/PIC12LCE519/PIC12LCR509A ................................................................................................... 79

14.0 DC and AC Characteristics

PIC12C508A/PIC12C509A/PIC12LC508A/PIC12LC509A/PIC12CE518/PIC12CE519/PIC12CR509A/

PIC12LCE518/PIC12LCE519/ PIC12LCR509A .................................................................................................. 93

15.0 Packaging Information......................................................................................................................................... 99

Index ........................................................................................................................................................................... 105

PIC12C5XX Product Identification System ................................................................................................................ 109

Sales and Support: ..................................................................................................................................................... 109

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

To Our Valued Customers

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 doc-

ument DS30000.

Errata

An errata sheet may exist for current devices, describing minor operational differences (from the data sheet) and rec-

ommended workarounds. 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)

• The Microchip Corporate Literature Center; U.S. FAX: (602) 786-7277

When contacting a sales office or the literature center, please specify which device, revision of silicon and data sheet

(include literature number) you are using.

Corrections to this Data Sheet

We constantly strive to improve the quality of all our products and documentation. We have spent a great deal of time

to ensure that this document is correct. However, we realize that we may have missed a few things. If you find any

information that is missing or appears in error, please:

• Fill out and mail in the reader response form in the back of this data sheet.

• E-mail us at webmaster@microchip.com.

We appreciate your assistance in making this a better document.

1999 Microchip Technology Inc.

DS40139E-page 3

PIC12C5XX

1.0

GENERAL DESCRIPTION

1.1

Applications

The PIC12C5XX from Microchip Technology is a fam-

ily of low-cost, high performance, 8-bit, fully static,

EEPROM/EPROM/ROM-based CMOS microcontrol-

lers. It employs a RISC architecture with only 33 sin-

gle word/single cycle instructions. All instructions are

single cycle (1

µs)

except for program branches

which take two cycles. The PIC12C5XX delivers per-

formance an order of magnitude higher than its com-

petitors in the same price category. The 12-bit wide

instructions are highly symmetrical resulting in 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 signifi-

cantly.

The PIC12C5XX products are equipped with special

features that reduce system cost and power require-

ments. The Power-On Reset (POR) and Device Reset

Timer (DRT) eliminate the need for external reset cir-

cuitry. There are four oscillator configurations to choose

from, including INTRC internal oscillator mode and the

power-saving LP (Low Power) oscillator mode. Power

saving SLEEP mode, Watchdog Timer and code

protection features also improve system cost, power

and reliability.

The PIC12C5XX are available in the cost-effective

One-Time-Programmable (OTP) versions which are

suitable for production in any volume. The customer

can take full advantage of Microchip’s price leadership

in OTP microcontrollers while benefiting from the OTP’s

flexibility.

The PIC12C5XX products are supported by a full-fea-

tured macro assembler, a software simulator, an in-cir-

cuit emulator, a ‘C’ compiler, fuzzy logic support tools,

a low-cost development programmer, and a full fea-

tured programmer. All the tools are supported on IBM

PC and compatible machines.

The PIC12C5XX series fits perfectly in applications

ranging from personal care appliances and security

systems to low-power remote transmitters/receivers.

The EPROM technology makes customizing applica-

tion programs (transmitter codes, appliance settings,

receiver frequencies, etc.) extremely fast and conve-

nient, while the EEPROM data memory technology

allows for the changing of calibration factors and secu-

rity codes. The small footprint packages, for through

hole or surface mounting, make this microcontroller

series perfect for applications with space limitations.

Low-cost, low-power, high performance, ease of use

and I/O flexibility make the PIC12C5XX series very ver-

satile even in areas where no microcontroller use has

been considered before (e.g., timer functions, replace-

ment of “glue” logic and PLD’s in larger systems, copro-

cessor applications).

DS40139E-page 4

1999 Microchip Technology Inc.

PIC12C5XX

TABLE 1-1:

PIC12CXXX & PIC12CEXXX FAMILY OF DEVICES

PIC12C508(A) PIC12C509(A) PIC12CR509A PIC12CE518 PIC12CE519 PIC12C671 PIC12C672 PIC12CE673 PIC12CE674

Maximum

Frequency

of Operation

(MHz)

EPROM

Program

Memory

RAM Data

Memory

(bytes)

EEPROM

Data Memory

(bytes)

Peripherals

Timer

Module(s)

A/D Con-

verter (8-bit)

Channels

Wake-up

from SLEEP

on pin

change

Interrupt

Sources

Features

I/O Pins

Input Pins

Internal

Pull-ups

In-Circuit

Serial

Programming

Number of

Instructions

Packages

Clock

512 x 12

1024 x 12

(ROM)

512 x 12

1024 x 12

1024 x 14

2048 x 14

1024 x 14

2048 x 14

Memory

128

—

TMR0

—

TMR0

—

TMR0

—

TMR0

—

TMR0

—

TMR0

Yes

—

Yes

—

Yes

—

Yes

—

Yes

8-pin DIP,

JW, SOIC

8-pin DIP,

JW, SOIC

8-pin DIP,

SOIC

8-pin DIP,

JW, SOIC

8-pin DIP,

JW, SOIC

8-pin DIP,

JW, SOIC

8-pin DIP,

JW, SOIC

8-pin DIP,

All PIC12CXXX & PIC12CEXXX devices have Power-on Reset, selectable Watchdog Timer, selectable code protect and high I/O

current capability.

All PIC12CXXX & PIC12CEXXX devices use serial programming with data pin GP0 and clock pin GP1.

1999 Microchip Technology Inc.

DS40139E-page 5

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1 引言　　通信对抗系统需要在复杂的信息环境下实现对信号的处理，需要滤波器实现信号的选择，滤波器主要应用于分离信号、抑制干扰，这是滤波器最广泛和最基本的应用。在这种应用中，他使所需要频率的信号顺利通过，对不需要的频率产生抑制。当前的通信系统随着实际的需要，要求滤波器低插损、低带内波动、高信号选择性，同时体积尽可能小，以满足灵敏度和动态范围的要求。电调滤波器具有体积小、工作频带宽的优点，可很...[详细]