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GENERAL DESCRIPTION

The PIC14000 features include medium to high resolution A/D conversion (10 to 16 bits), temperature sensing, closed loop charge control, serial communication, and low power operation.

The PIC14000 uses a RISC Harvard architecture CPU with separate 14-bit instruction and 8-bit data buses. A 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 are available. Additionally, a large register set is included.

PIC16/17 microcontrollers typically achieve a 2:1 code compression and a 4:1 speed improvement over other 8-bit microcontrollers.

High-Performance RISC CPU:

? Only 35 single word instructions to learn

? All single cycle instructions except for program

branches which are two cycle

? Operating speed: DC - 20 MHz clock input

? 4096 x 14 on-chip EPROM program memory

? 192 x 8 general purpose registers (SRAM)

? 6 internal and 5 external interrupt sources

? 38 special function hardware registers

? Eight-level hardware stack

Analog Peripherals Features:

? Slope Analog-to-Digital (A/D) converter

- Eight external input channels including two

channels with selectable level shift inputs

- Six internal input channels

- 16-bit programmable timer with capture register

- 16 ms maximum conversion time at maximum (16-bit) resolution and 4 MHz clock

- 4-bit programmable current source

? Internal bandgap voltage reference

? Factory calibrated with calibration constants stored in EPROM

? On-chip temperature sensor

? Voltage regulator control output

? Two comparators with programmable references

? On-chip low voltage detector

Special Microcontroller Features:

? Power-on Reset (POR), Power-up Timer (PWRT)

and Oscillator Start-up Timer (OST)

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

oscillator for reliable operation

? Multi-segment programmable code-protection

? Selectable oscillator options

- Internal 4 MHz oscillator

- External crystal oscillator

? Serial in-system programming (via two pins)

Digital Peripherals Features:

? 22 I/O pins with individual direction control

? High current sink/source for direct LED drive

? TMR0: 8-bit timer/counter with 8-bit programmable prescaler

? 16-bit A/D timer: can be used as a general purpose timer

? I2C? serial port compatible with System Management Bus

CMOS Technology:

? Low-power, high-speed CMOS EPROM technology

? Fully static design

? Wide-operating voltage range (2.7V to 6.0V)

? Commercial and Industrial Temperature Range

? Low power dissipation (typical)

- < 3 mA @5V, 4 MHz operating mode

- < 300 μA @3V (Sleep mode: clocks stopped

with analog circuits active)

- < 5 μA @3V (Hibernate mode: clocks

stopped, analog inactive, and WDT disabled)

Applications:

? Battery Chargers

? Battery Capacity Monitoring

? Uninterruptable Power Supply Controllers

? Power Management Controllers

? HVAC Controllers

? Sensing and Data Acquisition