PIC16F690-I/P

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1. Peripheral functions

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

        - High current source/sink for direct LED drive

        - Change the interrupt pin

        - Individually programmable weak pull-ups

        - Ultra Low Power Wakeup (ULPWU)

    2. Analog Comparator module with:

        - Two analog comparators

        - Programmable on-chip voltage reference (CVREF) block (% of VDD)

        - External comparator input and output accessibility

        - SR Latch Mode

        - Timer 1 gate synchronous latch

        - Fixed 0.6V VREF

    3. A/D converter:

        - 10-bit resolution and 12 channels

    4. Timer0: 8-bit 8-bit timer/counter Programmable Prescaler

    5. Enhanced Timer 1:

        - 16-bit timer/counter with prescaler

        - External Timer1 Gate (count enable)

        - Option to use OSC1 and OSC2 in LP mode As Timer1 oscillator in INTOSC mode choose

    6. Timer2: 8-bit timer/counter, 8-bit period Registers, Prescalers and Postscalers

    7. Enhanced Capture, Compare, PWM+ Modules:

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

        - Comparison, maximum resolution 200 ns

        - 10-bit PWM with 1, 2 or 4 output channels, Programmable "dead time", maximum frequency 20kHz

        - PWM output steering control

    8. Synchronous Serial Port (SSP):

        - SPI mode (master-slave)

    9. I2C™ (Master/Slave Mode):

        - I2C™ address mask

  10. Via two In-Circuit Serial Programming (ICSPTM) pin Flash-Based 20-Pin 8-Bit CMOS Microcontroller

2. Special microcontroller functions

    1. Precision Internal Oscillator:

        - Factory calibrated to ± 1%

        - Software selectable frequency range 8 MHz to 32 kHz

        - Software adjustable

        - Two-speed start mode

        - Crystal fault detection for critical applications

        - Clock mode switching during operation Power saving

    2. Power 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-up Timer (PWRTE) and oscillator start-up Timer (OST)

    7. Brown-out Reset (BOR) with software control Options

    8. Enhanced low-current watchdog timer (WDT) With on-chip oscillator (software selectable Full prescaler nominal 268 seconds) enable software

    9. Multiplexed main clear/input pins

  10. Programmable code protection

  11. High Endurance Flash/EEPROM Cells:

        - 100,000 write flash endurance

        - 1,000,000 write EEPROM endurance

        - Flash/Data EEPROM retention time: > 40 years

  12. Enhanced USART module:

        - Supports RS-485, RS-232 and LIN 2.0

        - Automatic baud rate detection

        - Automatic wake-up from start bit

3. High-performance RISC CPU

    1. Only 35 study instructions:

        - All single-cycle instructions except branches

    2. Running speed:

        - DC – 20 MHz oscillator/clock input

        - DC – 200 ns instruction cycle

    3. Interrupt capability

    4. 8-level deep hardware stack

    5. Direct, indirect and relative addressing modes

4. Low Power Features

    1. stand-by current:

        - 50 nA @ 2.0V, typical

    2. Working current:

        - 11 μA @ 32 kHz, 2.0V, typical

        - 220 μA @ 4 MHz, 2.0V, typical

    3. Watchdog Timer Current:

        - <1 μA @ 2.0V, typical

5. External clock mode

Oscillator Start-up Timer (OST) If the oscillator module is configured in LP, XT or HS mode, the Oscillator Start-up Timer (OST) starts counting 1024 oscillations from OSC1. This occurs on power-on reset (POR) and power-on timer (PWRT) expiration (if configured) or wake-up from sleep. During this time, the program counter is not incremented and program execution is suspended. The OST ensures that the oscillator circuit using a quartz crystal resonator or ceramic resonator is powered up and provides a stable system clock to the oscillator block. When switching between clock sources, the new clock needs a delay to stabilize.

6. Two-Speed Clock Startup Mode

Two-speed start-up mode provides additional power saving oscillator start-up and code execution by minimizing the delay between external. Two-speed start-up eliminates wake-up time for external oscillator start-up and can reduce the overall power consumption of the device when sleep mode is heavily used in applications. This mode allows the application to enter from Sleep, execute some instructions using INTOSC as the clock source, and then return to Sleep to wait for the primary oscillator to stabilize. The Oscillator Start-up Timer (OST) is enabled when the oscillator block is configured in LP, XT or HS mode. The OST will suspend program execution until 1024 oscillations have been counted. Two-Speed Start-up mode minimizes code execution delays caused by internal oscillator operation while counting the OST. When the OST count reaches 1024 and the OSTS bit of the OSCCON register is set, program execution switches to the external oscillator.