The STPMC1 device is an ASSP designed for effective measurement in power line systems utilizing the Rogowski coil, current transformer, and shunt or Hall current sensors. Used in combination with one or more STPMSx ICs, it implements all the functions needed in a 1, 2, or 3-phase energy meter.
The document details the Serial Peripheral Interface (SPI) module description for the STPMC1 programmable poly-phase energy calculator IC. It explains how a host system, such as a microcontroller or PC, can communicate with the device using four dedicated pins: SCS, SYN, SCL, and SDA.
The guide covers SPI interface timings, including data read/write speeds and setup/hold times. It further describes specific SPI operations such as remote reset requests, writing to configuration and mode signal registers, and reading internal data registers. The note also provides examples of data register assembling and parity checks.
The STPMC1 is an ASSP designed for effective measurement in power line systems using Rogowski coils, current transformers, and shunt or Hall current sensors.
The remote reset signal does not cause the 30 ms retarded restart of the analog module or the 120 ms retarded restart of the digital module.
The data setup time must be at least 20 ns.