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ARM Cortex-M3 development board designed for NXP LPC series, features the LPC1768 MCU, and integrates various standard interfaces, pretty easy for peripheral expansions.

LPC1768 development board

Overview


Open1768 is an ARM Cortex-M3 development board that features an LPC1768 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 ARM Cortex-M3 microcontroller.




What's On Board


LPC1768 development board on board resource

  1. LPC1768FBD100:the high performance ARM Cortex-M3 LPC MCU which features:

    • Core: Cortex-M3 32-bit RISC

    • Operating Frequency: 100MHz Max

    • Operating Voltage: 2.4-3.6V (3.3V typical)

    • Package: LQFP100

    • I/Os: 70

    • Memories: 512kB Flash, 64kB RAM

    • Communication Interfaces: 2 x SPI, 2 x SSP, 4 x UART, 3 x I2C, 1 x I2S, 6 x PWM, 8 x ADC, 1 x DAC

    • Debugging/Programming: supports SWD interfaces, supports ISP through UART



  2. AMS1117-3.3: 3.3V voltage regulator

  3. LM3526-L: USB power switch and over-current protection

  4. Power switch

  5. Power indicator

  6. LEDs: convenient for indicating I/O status and/or program running state

  7. USB communication indicator

  8. Reset button

  9. User keys: for I/O input test and/or program control

  10. Joystick: five positions

  11. 12M crystal oscillator: enables the MCU run at 48M frequency by frequency multiplication

  12. 32.768K crystal oscillator: for internal RTC, also supports clock calibration

  13. USB HOST port: for connecting USB flash drive, etc.

  14. CAN2 interface: communicates with accessory boards which feature the CAN device conveniently

  15. CAN1 interface: communicates with accessory boards which feature the CAN device conveniently

  16. I2C0 interface: easily connects to I2C peripherals such as I/O expander (PCF8574), EEPROM (AT24Cxx), etc.

  17. SPI0 | SPI1 interface: for connecting SPI peripherals, such as DataFlash (AT45DBxx), SD card, MP3, etc.

  18. Ethernet interface: easily connects the MCU to ethernet network by using an additional ethernet module, such as DP83848 Ethernet Board, etc.

  19. ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.

  20. I2S interface (including I2C1, I2C2 interfaces): easily connects to I2S and/or I2C peripherals such as Stereo Audio Device (UDA1380), FRAM (FM24CLxx), etc.

  21. LCD interface: combined with an 8-bit to 16-bit adapter, supports connecting the 3.2 inch multi-color touch screen LCD (the adapter and LCD are included in Package A/B)

  22. UART2 | UART3 interface: for connecting UART peripherals, such as RS232, RS485, USB TO UART, etc.

  23. PS/2 interface: easily connects to PS/2 keyboard and/or mouse

  24. Modem interface (including UART1 interface): for connecting Modem and/or UART peripherals, such as RS232, RS485, USB TO UART, etc.

  25. 8 I/Os interface (including 3-ch AD, 1-ch DA)

    • for connecting accessory boards which using I/O control, such as 8 Push Buttons, Motor, etc.

    • also integrates AD/DA function for AD/DA testing



  26. ISP interface (including UART0 interface): for connecting ISP modules and/or UART peripherals, such as RS232, RS485, USB TO UART, etc.

  27. USB port: communicating with PC

  28. 5V DC jack

  29. 5V/3.3V power input/output: usually used for power output, and/or common ground with other application board

  30. MCU pins connector: all the MCU pins are accessible on expansion connectors for further expansion

  31. JTAG/SWD interface: for debugging/programming

  32. LEDs jumper

  33. User keys jumper

  34. Joystick jumper

  35. PS/2 jumper



For jumper 32-35:



  • short the jumper to connect to I/Os used in example code

  • open the jumper to connect to other custom pins via jumper wires




  1. VBAT selection jumper

    • short the jumper to use system power supply

    • open the jumper to make it possible to connect the VBAT to external power, such as battery





Photos



ARM Cortex-M3 Development Board
Open1768 Development Board

ARM Cortex-M3 Development Board
Open1768 development board back view

ARM Cortex-M3 Development Board
Connecting to a debugger

ARM Cortex-M3 Development Board
Connecting to various peripherals


Open1768 μC/OS-II (Ⅰ)


Open1768 μC/OS-II (Ⅱ)


Open1768 μC/OS-II (Ⅲ)


Open1768 μC/OS-II (Ⅳ)

LPC ISP (mini)
Connecting to LPC ISP (mini) via UART

RS232 Board
Connecting to RS232 Board via USART

RS485 Board
Connecting to RS485 Board via USART

PL2303 USB UART Board mini
Connecting to USB UART Board via USART

SN65HVD230-CAN-Board
Connecting to CAN Board via CAN

8 Push Buttons
8 Push Buttons on the 8 I/O interface

5 IO Keypad
Connecting to 5 IO Keypad

AD Keypad
Connecting to AD Keypad

Analog Test Board
Test Board on the AD/DA port

FM24CLXX FRAM Board
Connecting to FRAM Board via I2C

I2C cascading x3
Multi I2C peripheral Module connected to the I2C bus

AT45DBXX-DataFlash-Board
Connecting to DataFlash Board via SPI

NRF24L01 RF Board
Connecting to NRF24L01 RF Board via SPI

DP83848 Ethernet Board
Connecting to Ethernet Board via Ethernet interface

UDA1380 Board
Connecting to UDA1380 Board via I2S

Connecting to any accessory board
Connecting to any accessory board you need


 



Note:
The Open1768 supports programming via UART BOOT LOAD, a USB TO UART accessory board is also provided in the package.
The Open1768 does NOT integrate any debugging function, a debugger is required.




JTAG/SWD Interface


The figures below shows the header pinouts of JTAG/SWD interface


JTAG interface header pinoutsSWD interface header pinouts

Note: some of the LPC Cortex-M3 Open series development board integrates SWD only.




Development Resources



  • Related Software

    • KEIL MDK-ARM Lite Edition (32 Kbytes limited), etc.



  • Demo Code (examples in C)

  • Schematic (PDF)

  • LPC ARM Cortex-M3 Development Documentations (Datasheets etc.)


Wiki: www.utsource.net/wiki/Open1768




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