Mikroe Expand 9 Click

Mikroe Expand 9 Click features the Semtech Corporation SX1509QB voltage level shifting GPIO expander. The SX1509QB comes in a 16-channel configuration and allows easy serial expansion of I/O through a standard I2C serial interface. It also has a built-in level shifting feature making it highly flexible in power supply systems where communication between incompatible I/O voltages is required. The device also has an integrated LED driver for enhanced lighting, and a keypad scanning engine to implement keypad applications up to 8x8 matrix.


  • On-board modules
  • Low power consumption
  • Integrated LED driver for enhanced lighting
  • On-chip keypad scanning engine
  • Interrupt and reset feature
  • Selectable I2C slave address
  • I2C interface
  • mikroBUS compatibility
  • L (57.15mm x 25.4mm) click board size
  • 3.3V input voltage


  • Low-power portable equipment
  • Keypad scanning
  • Driving LEDs


Mikroe Expand 9 Click
Published: 2021-11-22 | Updated: 2022-03-11