Spmi Vs I2c -

When a battery is critically low or a thermal event occurs, the PMIC needs to alert the processor immediately . I2C requires the master to poll slaves or use a separate GPIO interrupt line (which adds wiring). SPMI integrates a dedicated Interrupt Request (IRG) line that can deliver the interrupt in a single clock cycle.

SPMI vs. I2C: Choosing the Right Bus for Power Management and Beyond spmi vs i2c

Have you migrated a design from I2C to SPMI? Or struggled with CRC errors on the power bus? Share your experience in the comments below. When a battery is critically low or a

April 18, 2026 | Reading Time: 5 minutes Introduction In the world of embedded systems, buses are the circulatory system that carries data between peripherals and the processor. Two protocols that often cause confusion are I2C (Inter-Integrated Circuit) and SPMI (System Power Management Interface). SPMI vs