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