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    Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology from Microchip.Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology from Microchip.


    Power Managed Modes:

    • Run: CPU on, peripherals on
    • Idle: CPU off, peripherals on
    • Sleep: CPU off, peripherals off
    • Idle mode currents down to 5.8 μA typical
    • Sleep mode current down to 0.1 μA typical
    • Timer1 Oscillator: 1.8 μA, 32 kHz, 2V
    • Watchdog Timer: 2.1 μA
    • Two-Speed Oscillator Start-up

    Peripheral Highlights:

    • High-current sink/source 25 mA/25 mA
    • Three programmable external interrupts
    • Four input change interrupts
    • Up to 2 Capture/Compare/PWM (CCP) modules, one with Auto-Shutdown (28-pin devices)
    • Enhanced Capture/Compare/PWM (ECCP) module:
    • - One, two or four PWM outputs
      - Selectable polarity
      - Programmable dead time
      - Auto-Shutdown and Auto-RestartMaster Synchronous Serial Port (MSSP) module supporting 3-wire SPI™ (all 4 modes) and I2C™ Master and Slave Modes
    • Enhanced Addressable USART module:
      - Supports RS-485, RS-232 and LIN 1.2
      - RS-232 operation using internal oscillator block (no external crystal required)
      - Auto-Wake-up on Start bit
      - Auto-Baud Detect
    • 10-bit, up to 13-channel Analog-to-Digital Converter module (A/D):
      - Auto-acquisition capability
      - Conversion available during Sleep
    • Dual analog comparators with input multiplexing)
    • Flexible Oscillator Structure:
      • Four Crystal modes, up to 40 MHz
      • 4X Phase Lock Loop (available for crystal and internal oscillators)
      • Two External RC modes, up to 4 MHz
      • Two External Clock modes, up to 40 MHz
      • Internal oscillator block:
        - 8 user selectable frequencies, from 31 kHz to 8 MHz
        - Provides a complete range of clock speeds from 31 kHz to 32 MHz when used with PLL
        - User tunable to compensate for frequency drift
      • Secondary oscillator using Timer1 @ 32 kHz
      • Fail-Safe Clock Monitor:
        - Allows for safe shutdown if peripheral clock stops
    • Special Microcontroller Features:
      • C compiler optimized architecture:
        - Optional extended instruction set designed to optimize re-entrant code
      • 100,000 erase/write cycle Enhanced Flash program memory typical
      • 1,000,000 erase/write cycle Data EEPROM memory typical
      • Flash/Data EEPROM Retention: 100 years typical
      • Self-programmable under software control
      • Priority levels for interrupts
      • 8 x 8 Single-Cycle Hardware Multiplier
      • Extended Watchdog Timer (WDT):
        - Programmable period from 4 ms to 131s
      • Single-supply 5V In-Circuit Serial Programming™ (ICSP™) via two pins
      • In-Circuit Debug (ICD) via two pins
      • Wide operating voltage range: 2.0V to 5.5V
      • Programmable 16-level High/Low-Voltage Detection (HLVD) module:
        - Supports interrupt on High/Low-Voltage Detection
      • Programmable Brown-out Reset (BOR)
        - With software enable option


    PIC18F4520 Datasheet

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