STMicroelectronics expanded its STM32 ultra-low-power family with the launch of the STM32U3 for cost-sensitive applications in industrial, medical, and consumer electronics devices. Compared to previous generations, the STM32U3 offers greater power efficiency in run mode.
This iteration is the first STM32 based on near-threshold design, which drastically reduces the dynamic consumption of the final application. Based on near-threshold voltage technology, the STM32U3 devices reduce the active consumption down to 10µA/MHz, resulting in a far longer battery life for any application.
The series is based on an Arm Cortex-M33 core with 256 kB of RAM and 1 MB of dual bank Flash and operate at up to 96 MHz. Robust security is a priority on the series to safeguard sensitive applications with several protection mechanisms integrated for embedded Flash memory and SRAM, including readout protection, write protection, secure proprietary code readout protection, secure/hide protection areas.
These devices also offer two 12-bit ADCs (2,5 MS/s), two comparators, two operational amplifiers, two DAC channels, an internal voltage reference buffer, a low-power RTC, three general-purpose 32-bit timers, one 16-bit PWM timer dedicated to motor control, three general-purpose 16-bit timers, two basic 16-bit timers, and up to four 16-bit low-power timers.
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[Sponsored] Instead of incrementally improving legacy Cortex-M0+ architectures, STM32C5 introduces a Cortex-M33-based platform into the entry-level category. This changes not only performance expectations, but also how engineers approach system architecture, consolidation, and long-term scalability.
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