Hi Team,
MFG Part No: XMSM0L1306SRGER (samples)
In our protoboards, we are using the below-mentioned MCU to control the heating element to measure the board temperature, and to control the power supply to the main Soc by Load switch.
In this, we are facing issues in I2C communication.
Our MCU chips are not communicating with the Main Soc. We also have an evaluation board with us.
Setup Explanation:
With EVAL Board MCU:
- Initially, we programmed the MCU in EVAL board in 3.3V and tried to connect the I2C Data and clock to the main SoC. The eval board works in 3.3V and Processor IO Voltage is 1.8V in between we use a voltage level shifter to convert the 3.3V signal to a 1.8V Signal. In that, we observed there is no communication happens between them.
- Changed the eval board supply voltage to 1.8V and tried to make communication with the processor.
but this time also no communication happens
With Onboard MCU in Protoboards
- Tried to program the MCU in 1.8V, but the programming itself is not working in 1.8V
- Then Programmed in 3.3V operation and later power cycled, and changed to work in the 1.8V Supply range. No Communication happens.
- But if we tried to toggle the led in 1.8V it works properly. Toggleing is happening properly in 1.8V.
In general, the MCU is not making communication with the Processor.
The reason for trying to operate in 1.8V is that the Processor IO domain is 1.8V
Kindly please advise on it.
The reason for trying to operate in 1.8V is that the Processor IO domain is 1.8V
Kindly please advise on it.
