Microchip

PIC18F2539- 10 bit Microcontroller with 2k Bytes Flash Program Memory and USART

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Features High-Performance RISC CPU - Linear data memory addressign to 4 Kbytes - Linear program memory addressing to 1.4 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 Peripheral Features - High current sink/source 25 mA/25 mA - Three external interrupt pins - Two 16-bit timer/counter (TMR1, TMR3) - One 8-bit/16-bit timer/counter with prescaler - Capture 16-bit, max. resolution 6.25 ns.(TCY/16) - Addressable USART module - I ²C Master and Slave mode - Parallel Slave Port (PSP) module Special Microcontroller Features - Power-On Reset (POR) - Power-up Timer (PWRT) and Oscillator Start-Up Timer (OST) - Power-On Reset - 100,000 erase/write cycle Enhanced FLASH program memory typical - Programmable code protection - Power-saving SLEEP mode - Singlr supply 5V In-Circuit Serial Programming Analog Features - Compatiable 10-bit Analog-to-Digital Converter module (A/D) - Programmable Low-Voltage Detection - Programmable Brown-out Reset(BOR) CMOS Technology - Low power, high speed FLASH/EEPROM technology - Fully static design - Wide operating voltage range (2.0V to 5.5V) - Industrial and Extended temperature ranges

Pin Description Pin Number Description 1 MCLR/VPP 2 RA0/AN0 3 RA1/AN1 4 RA2/AN2/VREF- 5 RA3/AN3/VREF+ 6 RA4/T0CKI 7 RA5/AN4/SS/LVDIN 8 VSS 9 OSC1/CLKI 10 OSC2/CLKO/RA6 11 RC0/T13CKI 12 PWM2 13 PWM1 14 RC3/SCK/SCL 15 RC4/SDI/SDA 16 RC5/SDO 17 RC6/TX/CK 18 RC7/RX/DT 19 VSS 20 VDD 21 RB0/INT0 22 RB1/INT1 23 RB2/INT2td> 24 RB3 25 RB4 26 RB5/PGM 27 RB6/PGC 28 RB7/PGD

Pin Layout Dimensional Drawing

Technical Data Data Sheet Microchip - Data Sheet for PIC18FXX39 Application Notes Microchip - PIC Application Notes