PIC18F4420-I/P MCU Microchip

PIC18F4420-I/P

8位微控制器 -MCU 16KB 768 RAM 36I/O

PIC18F4420-I/P Flexible Oscillator Structure:

• Four Crystal modes, up to 40 MHz

• 4x Phase Lock Loop (PLL) – 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:

- Fast wake from Sleep and Idle, 1 μs typical

- 8 use-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

PIC18F4420-I/P Power Management Features:

• Run: CPU on, Peripherals on

• Idle: CPU off, Peripherals on

• Sleep: CPU off, Peripherals off

• Ultra Low 50nA Input Leakage

• Run mode Currents Down to 11 μA Typical

• Idle mode Currents Down to 2.5 μA Typical

• Sleep mode Current Down to 100 nA Typical

• Timer1 Oscillator: 900 nA, 32 kHz, 2V

• Watchdog Timer: 1.4 μA, 2V Typical

• Two-Speed Oscillator Start-up

PIC18F4420-I/P 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 (40/44-pin devices only):

- One, two or four PWM outputs

- Selectable polarity

- Programmable dead time

- Auto-shutdown and auto-restart