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
STM32L152RBT6 development board on board resource
STM32L-DISCOVERY socket: for easily connecting the STM32L-DISCOVERY
8I/Os + DAC interface: for connecting accessory boards such buttons, motors, etc.
USART2 interface: easily connects to RS232, RS485, USB TO 232, etc.
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
LCD connector: for connecting touch screen LCD
USART1 interface: easily connects to RS232, RS485, USB TO 232, etc.
PS/2 interface: for connecting PS/2 keyboard and/or mouse
I2C1 / I2C2 interface: easily connects to I2C peripherals such as I/O expander (PCF8574), FRAM (FM24CLxx), etc.
USB interface: for connecting the STM32 development board to PC through USB connection
ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
5V DC jack
5V and VDD power input/output: usually used as power output, also common-grounding with other user board
MCU pins connector: all the MCU I/O ports are accessible on expansion connectors for further expansion
JTAG/SWD interface: for debugging/programming
VDD jumper
USB enable jumper
short the jumper to enable PC auto-detection while USB connecting
open the jumper to disable
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
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
Boot mode switch: for configuring BOOT0 pin
AMS1117-ADJ
Adjustable resistor: for adjusting VDD (1.8V-3.5V, ±2%)
Power supply switch: 5V DC or USB
Power indicator
Joystick: five positions
What's on the STM32L-DISCOVERY
STM32L-DISCOVERY on board resource
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
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