Описание
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)
- Tape and Reel Packaging
