PIC 18F4520 - DIP40

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 Brown-out Reset (BOR) with Software Enable Option    

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    

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    

Peripheral Features:    
• 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    
• Master 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/J2602    
- 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 (A/D) Converter module:    
- Auto-acquisition capability    
- Conversion available during Sleep    
• Dual Analog Comparators with Input Multiplexing    
• Programmable 16-Level High/Low-Voltage Detection (HLVD) module:    
- Supports interrupt on High/Low-Voltage Detection