PIC12LC671T datasheet(3/130 Pages) MICROCHIP

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DS30561C-page 3

PIC12C67X

1.0

GENERAL DESCRIPTION

The PIC12C67X devices are low-cost, high-perfor-

mance, CMOS, fully-static, 8-bit microcontrollers with

integrated

analog-to-digital

(A/D)

converter

and

EEPROM data memory (EEPROM on PIC12CE67X

versions only).

All PIC® microcontrollers employ an advanced RISC

architecture. The PIC12C67X microcontrollers have

enhanced core features, eight-level deep stack, and

multiple internal and external interrupt sources. The

separate instruction and data buses of the Harvard

architecture allow a 14-bit wide instruction word with

the separate 8-bit wide data. The two stage instruction

pipeline allows all instructions to execute in a single

cycle, except for program branches, which require two

cycles. A total of 35 instructions (reduced instruction

set) are available. Additionally, a large register set gives

some of the architectural innovations used to achieve a

very high performance.

PIC12C67X microcontrollers typically achieve a 2:1

code compression and a 4:1 speed improvement over

other 8-bit microcontrollers in their class.

The PIC12C67X devices have 128 bytes of RAM, 16

bytes of EEPROM data memory (PIC12CE67X only), 5

I/O pins and 1 input pin. In addition a timer/counter is

available. Also a 4-channel, high-speed, 8-bit A/D is

provided. The 8-bit resolution is ideally suited for appli-

cations requiring low-cost analog interface, (i.e.,

thermostat control, pressure sensing, etc.)

The PIC12C67X devices have special features to

reduce external components, thus reducing cost,

enhancing system reliability and reducing power con-

sumption. The Power-On Reset (POR), Power-up

Timer (PWRT), and Oscillator Start-up Timer (OST)

eliminate the need for external reset circuitry. There are

five oscillator configurations to choose from, including

INTRC precision 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 SLEEP (power-down) feature provides a

power-saving mode. The user can wake-up the chip

from SLEEP through several external and internal

interrupts and resets.

A highly reliable Watchdog Timer with its own on-chip

RC oscillator provides protection against software

lock-up.

A UV erasable windowed package version is ideal for

code development, while the cost-effective One-Time-

Programmable (OTP) version is 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.

1.1

Applications

The PIC12C67X 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 (PIC12CE67X

only) technology allows for the changing of calibration

factors and security codes. The small footprint pack-

ages, for through hole or surface mounting, make this

microcontroller series perfect for applications with

space limitations. Low-cost, low-power, high perfor-

mance, ease of use and I/O flexibility make the

PIC12C67X series very versatile even in areas where

no microcontroller use has been considered before

(i.e., timer functions, replacement of "glue" logic and

PLD’s in larger systems, coprocessor applications).

1.2

Family and Upward Compatibility

The PIC12C67X products are compatible with other

members of the 14-bit PIC16CXXX families.

1.3

Development Support

The PIC12C67X devices are supported by a full-

featured macro assembler, a software simulator, an in-

circuit emulator, a low-cost development programmer

and a full-featured programmer. A “C” compiler and

fuzzy logic support tools are also available.

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