ST STM32U073CCT6

The STM32U073x8/B/C devices are ultra-low-power microcontrollers based on the high-performance Arm Cortex-M0+ 32-bit RISC core, operating at frequencies up to 56 MHz. These devices integrate high-speed memory (up to 256 KB Flash and 40 KB SRAM with hardware parity), a rich set of enhanced I/Os and peripherals connected to APB and AHB buses and a 32-bit multi-AHB bus matrix. They also incorporate protection mechanisms for embedded Flash and SRAM, such as readout protection and write protection. These devices offer one 12-bit ADC, one 12-bit DAC, two embedded rail-to-rail analog comparators, one operational amplifier, one low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM timer dedicated to motor control, three general-purpose 16-bit timers, and three 16-bit low-power timers. The devices also integrate up to 21 capacitive sensing channels, as well as an integrated LCD controller capable of driving 8×48 or 4×52 segments with an internal step-up converter. They also feature standard and advanced communication interfaces: four I2C, three SPI, four USART, and three low-power UART, plus one crystal-less USB full-speed device. The STM32U073x8/B/C operates over temperature ranges of -40 to +85°C (junction temperature +105°C) and -40 to +125°C (junction temperature +130°C), with an internal LDO regulator and a supply voltage range of 1.71 to 3.6 V. Comprehensive power-saving modes enable the design of low-power applications. Independent power supplies are supported: an analog independent power supply input for the ADC, DAC, operational amplifier, and comparators, and a VBAT input that keeps the RTC and backup registers powered. The STM32U073x8/B/C is available in eight packages ranging from 32 to 81 pins.

• Ultra-low power features: supply voltage 1.71 V to 3.6 V, temperature range -40°C to 85/125°C, VBAT mode current 130 nA (with RTC and 9× 32-bit backup registers), shutdown mode current 16 nA (6 wakeup pins), standby mode current 160 nA (with RTC) or 30 nA (without RTC), Stop 2 mode current 825 nA (with RTC) or 695 nA (without RTC), run mode current 52 μA/MHz, batch acquisition mode support, wakeup time from Stop mode 4 μs, under-voltage reset support.
• Core: 32-bit Arm Cortex-M0+ CPU, up to 56 MHz.
• Memory: up to 256 KB single-bank flash with proprietary code readout protection; 40 KB SRAM with hardware parity.
• Rich analog peripherals: 1× 12-bit ADC with hardware oversampling up to 16-bit; 1× 12-bit DAC output channel; 1× general-purpose op-amp with built-in PGA; 2× ultra-low-power comparators.
• Communication interfaces: USB 2.0 full-speed crystal-less solution; 7× USART/LPUART; 4× I2C; 3× SPI; infrared interface.
• Clock management: 4 to 48 MHz crystal oscillator; 32 kHz crystal oscillator for RTC; internal 16 MHz RC oscillator; internal low-power 32 kHz RC oscillator; internal multi-speed 100 kHz to 48 MHz oscillator; internal 48 MHz clock; PLL for system clock, USB, and ADC.
• Timers & watchdogs: 1× 16-bit advanced motor control timer, 1× 32-bit and 3× 16-bit general-purpose timers, 2× 16-bit basic timers, 3× low-power 16-bit timers, 2× watchdogs, SysTick timer; RTC with hardware calendar, alarm, and calibration.
• Other features: capacitive sensing channels supporting touch keys, linear and rotary touch sensors; 12-channel DMA controller; serial wire debug support.