Open 32L-D Standard

Open32L-D is an STM32 development board designed for the ST official tool STM32L-DISCOVERY, which features the STM32L152RBT6 microcontroller onboard.

The Open32L-D 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 STM32L series microcontrollers.

What’s on the mother board

1. STM32L-DISCOVERY socket: for easily connecting the STM32L-DISCOVERY
2. 8I/Os + DAC interface: for connecting accessory boards such buttons, motors, etc.
3. USART2 interface: easily connects to RS232, RS485, USB TO 232, etc.
4. SPI1 / SPI2 + ADC interface
   • easily connects to SPI peripherals such as DataFlash (AT45DBxx), SD card, MP3 module, etc.
   • SPI1 features AD/DA alternative function, supports connecting AD/DA module as well
5. LCD connector: for connecting touch screen LCD
6. USART1 interface: easily connects to RS232, RS485, USB TO 232, etc.
7. PS/2 interface: for connecting PS/2 keyboard and/or mouse
8. I2C1 / I2C2 interface: easily connects to I2C peripherals such as I/O expander (PCF8574), FRAM (FM24CLxx), etc.
9. USB interface: for connecting the STM32 development board to PC through USB connection
10. ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
11. 5V DC jack
12. 5V and VDD power input/output: usually used as power output, also common-grounding with other user board
13. MCU pins connector: all the MCU I/O ports are accessible on expansion connectors for further expansion
14. JTAG/SWD interface: for debugging/programming
15. VDD jumper
16. USB enable jumper
    • short the jumper to enable PC auto-detection while USB connecting
    • open the jumper to disable
17. Joystick jumper
    • short the jumper to connect the joystick to default I/Os used in example code
    • open the jumper to connect the joystick to custom I/Os via jumper wires
18. PS/2 interface jumper
    • short the jumper to connect the PS/2 interface to default I/Os used in example code
    • open the jumper to connect the PS/2 interface to custom I/Os via jumper wires
19. Boot mode switch: for configuring BOOT0 pin
20. AMS1117-ADJ
21. Adjustable resistor: for adjusting VDD (1.8V-3.5V, ±2%)
22. Power supply switch: 5V DC or USB
23. Power indicator
24. Joystick: five positions

What’s on the STM32L-DISCOVERY

• STM32L152RBT6 microcontroller featuring 128 KB Flash, 16 KB RAM, 4 KB EEPROM, in an LQFP64 package
• On-board ST-Link/V2 with selection mode switch to use the kit as a standalone ST-Link/V2 (with SWD connector for programming and debugging)
• Board power supply: through USB bus or from an external 3.3 or 5 V supply voltage
• External application power supply: 3 V and 5 V
• IDD current measurement
• LCD
  • DIP28 package
  • 24 segments, 4 commons
• Four LEDs:
  • LD1 (red/green) for USB communication
  • LD2 (red) for 3.3 V power on
  • Two user LEDs, LD3 (green) and LD4 (blue)
• Two pushbuttons (user and reset)
• One linear touch sensor or four touchkeys
• Extension header for LQFP64 I/Os for quick connection to prototyping board and easy probing

To know more about this product please click this link.