TM4C123x Tiva™ C MCUs Texas Instruments TM4C123x Tiva™ C MCUs provide a broad portfolio of connected Cortex™-M4F microcontrollers. Designers who migrate to the Tiva C Series MCUs benefit from balancing the floating-point performance needed to create highly responsive mixed-signal applications and the low-power architecture required to enable increasingly aggressive power budgets. The TivaWare™ supports the Tiva C Series MCUs for C Series software, designed specifically for those customers who want to get started easily, write production-ready code quickly, and minimize the overall cost of software ownership.