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PIC18F4539 40-pin 24kB Motor Control Microcontroller Datasheet
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Features
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
- - 12 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
- - 32 I/O pins with individual direction control
- - 40-pin DIP
Pin Layout

Pin Description
Pin Number | Description |
---|---|
1 | MCLR/VPP - Master Clear Reset |
2 | RA0/AN0 - Port A |
3 | RA1/AN1 - Port A |
4 | RA2/AN2/VREF- - Port A |
5 | RA3/AN3/VREF+ - Port A |
6 | RA4/T0CKI - Port A |
7 | RA5/AN4/SS/LVDIN - Port A |
8 | RE0/AN5/RD - Port E |
9 | RE1/AN6/WR - Port E |
10 | RE2/AN7/CS - Port E |
11 | Vdd - Postive Power Supply |
12 | Vss - Ground |
13 | OSC1/CLKI - Oscillator Input |
14 | OSC2/CLKO/RA6 - Port A |
15 | RC0/T13CKI - Port C |
16 | PWM2 - PWM Module |
17 | PWM1 - PWM Module |
18 | RC3/SCK/SCL - Port C |
19 | RD0/PSP0 - Port D |
20 | RD1/PSP1 - Port D |
21 | RD2/PSP2 - Port D |
22 | RD3/PSP3 - Port D |
23 | RC4/SDI/SDA - Port C |
24 | RC5/SDO - Port C |
25 | RC6/TX/CK - Port C |
26 | RC7/RX/DT - Port C |
27 | RD4/PSP4 - Port D |
28 | RD5/PSP5 - Port D |
29 | RD6/PSP6 - Port D |
30 | RD7/PSP7 - Port D |
31 | Vss - Ground |
32 | Vdd - Positive Power Supply |
33 | RB0/INT0 - Port B |
34 | RB1/INT1 - Port B |
35 | RB2/INT2 - Port B |
36 | RB3 - Port B |
37 | RB4 - Port B |
38 | RB5/PGM - Port B |
39 | RB6/PGC - Port B |
40 | RB7/PGD - Port B |
Dimensional Drawing

Technical Data
Datasheet
Microchip Web Site - Datasheet for PIC18F4539 |
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Application Notes
Microchip Web Site - Application Notes for PIC18F4539 |
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