Open18F4520 Package A (Waveshare) PIC development board

Overview

Open18F4520 is a PIC development board that features a PIC18F4520 device as the microcontroller. It supports further expansion with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with PIC microcontroller.

What's On Board

1. PIC18F4520-I/P: the high performance PIC MCU which features:
   • Core: PIC 8-bit RISC
   • Operating Frequency: 40MHz Max
   • Operating Voltage: 2-5.5V
   • Package: DIP40
   • I/Os: 36
   • Memories: 32kB Flash, 1536B RAM, 256B EEPROM
   • Communication Interfaces: 1 x MSSP(SPI/I2C), 1 x A/E/UART, 2 x PWM, 8 x ADC
   • Debugging/Programming: ICSP interfaces
2. AMS1117-3.3: 3.3V voltage regulator
3. Power switch
4. Power indicator
5. LEDs: convenient for indicating I/O status and/or program running state
6. User keys: for I/O input test and/or program control
7. Joystick: five positions
8. Reset button
9. Buzzer
10. Infrared receiver
11. 4M crystal oscillator
12. 16 I/Os interface | 8-bit AD interface

• for connecting accessory boards which using I/O control, such as FT245 USB FIFO, 8 SEG LED, etc.
• there's also 8-bit AD interface can be used for AD testing

8 I/Os interface: for connecting accessory boards which using I/O control, such as 8 Push Buttons, Motor, etc. SPI interface: for connecting SPI peripherals, such as DataFlash (AT45DBxx), SD card, MP3, etc. I2C interface: for connecting I2C peripherals, such as I/O expander (PCF8574), EEPROM (AT24Cxx), etc. 1-WIRE interface: for connecting 1-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc. UART interface: for connecting UART peripherals, such as RS232, RS485, USB TO UART, etc. PS/2 interface: for connecting PS/2 keyboard and/or mouse Graphic multi-color LCD interface: for connecting 2.2 inch multi-color touch screen LCD which using SPI control Character LCD interface: for connecting character LCD, such as LCD1602 (3.3V blue backlight) 5V DC jack Custom crystal socket VCC power input/output: usually used for power supply output, and/or common ground with other application board MCU pins connector: all the MCU pins are accessible on expansion connectors for further expansion ICSP interface: for debugging/programming LEDs jumper User keys jumper Joystick jumper PS/2 jumper 1-WIRE jumper Buzzer jumper IR jumper VCC selection jumper Crystal selection jumper RA4 pull-up jumper

For jumper 26-32:

• short the jumper to connect to I/Os used in example code;
• open the jumper to connect to other custom pins via jumper wires.

Note: The Open18F4520 does NOT integrate any debugging function, a debugger is required.

ICSP Interface

The figure below shows the header pinouts of ICSP interface

Development Resources

• Related Software (MPLAB, etc.)
• Demo Code (examples in C)
• Schematic (PDF)
• PIC Development Documentations (Datasheets etc.)

Wiki: www.waveshare.com/wiki/Open18F4520

Package Contains

The "Standard Package" and "Accessory Boards Package" below are included.

Standard Package

1. Open18F4520 development board x 1
2. PIC18F4520 x 1
3. 4-pin wire x 2
4. 2-pin wire x 2
5. USB power cable x 1

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Accessory Boards Package

1. USB type A plug to mini-B plug cable x 1
2. PL2303 USB UART Board (mini) x 1
3. 2.2inch 320x240 Touch LCD (A) x 1
4. AD Keypad (for testing embedded ADC) x 1
5. FT245 USB FIFO Board (mini) (16 I/Os) x 1
6. AT45DBXX DataFlash Board (SPI) x 1
7. PCF8563 RTC Board (I2C) x 1
8. Micro SD Storage Board (SDIO/SPI) x 1
9. NRF24L01 RF Board (B) (SPI) 2pcs x 1
10. DS18B20 (ONE WIRE) x 1
11. Infrared Remote Controller (IR) x 1

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