PIC16HV785-I/P

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1. Describe

PIC16F785/HV785 has multiple clocks Source and select function to allow it to be used A wide range of applications, while maximizing performance and minimizing power consumption. The clock source can be configured as an external oscillator, quartz crystal resonator, ceramic resonator and Resistor-capacitor (RC) circuit. In addition, the system clock source can be configured as two Internal oscillator, selectable speed Through software. Other clock functions include:

   - Optional external system clock source Or through the software.

   - Two-speed clock startup mode to minimize the delay between external oscillator startup And code execution. 

   - The Fail Safe Clock Monitor (FSCM) is designed to Detect external clock source (LP, XT, HS, EC or RC mode) and switch to Internal oscillator.

PIC16F785/HV785 can be configured as one of the following Eight clock modes.

    1. EC-External clock with I/O on RA4.

    2. LP – 32.768 kHz watch crystal or ceramic Resonator oscillator mode.

    3. XT-medium gain crystal or ceramic Resonator oscillator mode.

    4. HS-high gain crystal or ceramic resonator model.

    5. RC-External resistance capacitance (RC) and FOSC/4 output on RA4

    6. RCIO-External resistor-capacitor with I/O RA4.

    7. INTOSC – Internal oscillator with FOSC/4 output I/O on RA4 and RA5.

    8. INTOSCIO – Internal oscillator with I/O on RA4 And RA5.

The clock source mode is determined by The FOSC<2:0> bits in the Configuration Word (see Section 15.0 "Special Features of the CPU"). once PIC16F785/HV785 has been programmed, clock The source mode is configured and cannot be software.

2. Functions

    1. High-speed comparator module with

        - Two independent analog comparators

        - Programmable on-chip reference voltage (CVREF) module (percentage of VDD)

        - 1.2V band gap voltage reference

        - External comparator input and output Barrier-free

        - <40 ns propagation delay

        - 2 mv offset, typical

    2. The operational amplifier module has 2 independent Operational Amplifier:

        - 3 MHz GBWP, typical

        - All I/O pins can be accessed from the outside

    3. Two-phase asynchronous feedback PWM Module

        - Programmable complementary output Dead zone delay

        - Infinite resolution analog duty cycle

        - Multi-phase PWM synchronous output/input

        - FOSC/2 maximum PWM frequency

    4. A/D converter

        - 10-bit resolution and 14 channels (2 internal)

    5. 17 I/O pins and 1 input-only pin

        - High current source/sink for direct LED drive

        - Pin interrupt change

        - Individually programmable weak pull-up

    6. Timer0: 8-bit 8-bit timer/counter Programmable prescaler

    7. Enhanced timer 1

        - 16-bit timer/counter with prescaler

        - External department input mode

        - Option to use OSC1 and OSC2 in LP mode As Timer1 oscillator, if it is in INTOSC mode Selected

    8. Timer2: 8-bit timer/counter with 8-bit period Register, prescaler and postscaler

    9. Capture, compare, PWM module

        - 16-bit capture with a maximum resolution of 12.5 ns

        - Comparison, maximum resolution 200 ns

        - 10-bit PWM with 1 output channel, maximum Frequency 20 kHz

  10. In-Circuit Serial Programming TM (ICSPTM) through two Pin

  11. Shunt regulator (PIC16HV785 only)

        - 5 volt adjustment

        - 4 mA to 50 mA shunt range

3. Special microcontroller features

    1. Precision internal oscillator:

        - Factory calibration is ±1%

        - Software selectable frequency range 8 MHz to 32 kHz

        - Software adjustable

        - Two-speed start mode

        - Crystal failure detection for critical applications

        - Clock mode switching during operation Power saving

    2. Energy-saving sleep mode

    3. Wide operating voltage range (2.0V-5.5V)

    4. Industrial and extended temperature range

    5. Power-on reset (POR)

    6. Power-on Timer (PWRT) and oscillator start Timer (OST)

    7. Power-down reset (BOR) with software control Options

    8. Enhanced low-current watchdog timer (WDT) With on-chip oscillator (software selectable Nominal 268 seconds, full prescaler) and Software enable

    9. Multiplexed master clear with pull-up/input pin

  10. Programmable code protection

  11. High-endurance flash/EEPROM unit:

        - 100,000 write flash memory endurance

        - Endurance of 1,000,000 writes to EEPROM

        - Flash memory/data EEPROM retention time:> 40 years

4. High-performance RISC CPU

    1. There are only 35 learning instructions:

        - All single-cycle instructions except for branches

    2. Operating speed:

        - DC-20 MHz oscillator/clock input

        - DC-200 ns instruction cycle

    3. Interrupt capability

    4. 8-level Seep hardware stack

    5. Direct, indirect and relative addressing modes

5. Low power consumption characteristics

    1. stand-by current:

        - 30 nA @ 2.0V, typical

    2. Working current:

        - 8.5 μA @ 32 kHz, 2.0V, typical

        - 100 μA @ 1 MHz, 2.0V, typical

    3. Watchdog timer current:

        - 1 μA @ 2.0V, typical

    4. Timer1 oscillator current:

        - 2 μA @ 32 kHz, 2.0V, typical

6. Pin configuration