STMicroelectronics provides a recommended PCB layout in the application note AN5123, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
The ST3DV520AQTR can be configured for I2C or SPI interface through the MODE pin. For I2C, connect the MODE pin to VCC, and for SPI, connect it to GND. Additionally, the device requires specific register settings for each interface, which can be found in the datasheet and application notes.
The maximum clock frequency for the I2C interface is 400 kHz, as specified in the datasheet. However, it's recommended to use a clock frequency of 100 kHz or lower to ensure reliable communication and minimize noise.
The ST3DV520AQTR has an internal POR and BOR circuitry. To handle these reset events, ensure that the device is properly powered up and that the power supply voltage is stable. Additionally, implement a reset handler in your firmware to detect and respond to POR and BOR events.
STMicroelectronics recommends using a 10 μF ceramic capacitor and a 100 nF ceramic capacitor in parallel, placed as close as possible to the device's power pins, to decouple the power supply and minimize noise.
ST3DV520AQTR datasheet
by STMicroelectronics
