Part Number : PIC18F2420
Function : Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
Package : DIP, SOIC 28 Pin Type
Maker : Microchip Technology
Pinouts : 
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 2.5μA Typical
• Sleep mode Current Down to 100 nA Typical
• Timer1 Oscillator: 900 nA, 32 kHz, 2V
• Watchdog Timer: 1.4μA, 2V Typical
• Two-Speed Oscillator Start-up 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 8MHz
- Provides a complete range of clock speeds from 31 kHz to 32 MHz when used with PLL
- User-tunable to compensate for frequency drift
Datasheet PDF Download : 
Others datasheet of same file :
18F2420-I/ML, PIC18F2520, PIC18F2520-E/SO, PIC18F2520-I/SP