PIC18F2539 28-pin 24kB Microcontroller Datasheet

High-Performance RISC CPU

• - Source code compatible with the PIC16 and PIC17 instruction sets
• - Linear program memory addressing to 24 Kbytes
• - 20 MHz Oscillator/Clock Input
• - 16-bit wide instructions, 8-bit wide data path
• - Priority levels for interrupts
• - 8 x 8 Single Cycle Hardware Multiplier
• - 24 kBytes Flash Program Memory
• - 1408 Byte RAM Data Memory
• - 256 Byte RAM Data Memory

Peripheral Features

• - High current sink/source 25mA/25mA
• - Three 16-bit timer/counter
• - Two PWM Modules with 10-bit Resolution
• - Single Phase Induction Motor Control Kernal
• - 3-wire SPI (supports all 4 SPI modes)
• - I²C Master and Slave mode
• - Addressable USART Module supports RS-485 and RS-232
• - Eight Channel 10-bit Analog-to-Digital Converter

Special Microcontroller Features

• - Power-On Reset
• - Power-up Timer (PWRT) and Oscillator Start-Up Timer (OST)
• - 1,000 erase/write cycles Enhanced Flash Program Memory
• - 1,000,000 typical erase/write cycles EEPROM Data Memory
• - Watchdog Timer (WDT) with its own On-Chip RC oscillator
• - Programmable Code Protection
• - Power Saving SLEEP mode
• - In-Circuit Debug (ICD)

CMOS Technology

• - Low power, high speed CMOS FLASH technology
• - Fully Static Design
• - Wide Operating Voltage Range (2.0V to 5.5V)

I/O and Packages

• - 21 I/O pins with individual direction control
• - 28-pin DIP