UNICA SBC/Interfaces and Connectors/mikroBUS
| HOME | SOMs | SBCs | ToloMEO Embedded Assistant |  GET A QUOTE
|
 ONLINE HELPDESK
|
| Roadmap | IoT Services | ML/AI services | Embedded Design Services |
| History | |||
|---|---|---|---|
| Issue Date | Notes | ||
| 2026/09/22 | First documentation release | ||
Contents
mikroBUS[edit | edit source]
The J28/J29 are mikroBUS™ connector socket supporting many extension add-on boards.
Description[edit | edit source]
J28 and J29 are two 1x8x2.54mm pin female headers that support mikroBUS boards for many standard peripherals and developer solutions. For example, the Click boards have many ready-to-use solutions; the interface sub-section has a collection of interfaces.
Signals[edit | edit source]
The mikroBUS™ connector exposes the interface signals:
J28[edit | edit source]
| Pin# | Pin name | Pin function | SO-DIMM pin # |
|---|---|---|---|
| 1 | ADC | 111 or 113 | |
| 2 | RST | reset signal | GPIO exp P05 or
POR (optional) |
| 3 | CS | Chip select | 191 or
SPI_A SS0 |
| 4 | SCLK | SPI_A SCLK (optional) | |
| 5 | MISO | SPI_A MISO (optional) | |
| 6 | MOSI | SPI_A MOSI (optional) | |
| 7 | +3V3 | Carrier board 3V3 | |
| 8 | GND | Ground |
J29[edit | edit source]
| Pin# | Pin name | Pin function | SO-DIMM pin # |
|---|---|---|---|
| 1 | PWM | 36 or
28 (optional) | |
| 2 | INT | interrupt signal | GPIO exp P01 |
| 3 | RX | UART RX signal | 89 |
| 4 | TX | UART TX signal | 91 |
| 5 | SCL | I2C_A SCL (optional) | |
| 6 | SDA | I2C_A SDA (optional) | |
| 7 | +5V | Carrier board 5V | |
| 8 | GND | Ground |
