STMicroelectronics STM32U083RCI6

The STM32U083xC devices are ultra-low-power microcontrollers based on the high-performance Arm^® Cortex^®-M0+ 32-bit RISC core operating at a frequency of up to 56 MHz.

The STM32U083xC devices embed high-speed memories (256-Kbyte flash memory and 40-Kbyte SRAM with hardware parity check), and an extensive range of enhanced I/Os and peripherals connected to APB and AHB buses, and a 32-bit multi-AHB bus matrix.

They also embed protection mechanisms for embedded flash memory and SRAM, such as readout protection and write protection.

The STM32U083xC devices offer a 12-bit ADC, a 12-bit DAC, two embedded rail-to-rail analog comparators, one operational amplifier, a 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 embed up to 21 capacitive sensing channels, plus an integrated LCD controller that enables to drive 8x48 or 4x52 segments with internal step-up converter.

They also feature standard and advanced communication interfaces, namely four I2Cs, three SPIs, four USARTs and three low-power UARTs, plus one crystal-less USB full-speed device.

In addition, the STM32U083xC devices embed an AES hardware accelerator.

The STM32U083xC operate in the -40 to +85 °C (+105 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to 3.6 V VDD power supply using an internal LDO regulator. A comprehensive set of power-saving modes makes possible the design of low-power applications.

Independent power supplies are supported: analog independent supply input for ADC, DAC, OPAMP and comparator, as well as VBAT input allowing the backup of the RTC and backup registers.

The STM32U083xC offer eight packages from 32 to 81 pins.

• Includes ST state-of-the-art patented technology.
• Ultra-low-power features (ultra-low-power devices)
  • 1.71 V to 3.6 V power supply
  • -40 °C to 85/125 °C temperature range
  • VBAT mode: 130 nA (with RTC and 9 x 32-bit backup registers)
  • Shutdown mode (6 wake-up pins): 16 nA
  • Standby mode (6 wake-up pins): 160 nA with RTC, 30 nA without RTC
  • Stop 2 mode: 825 nA with RTC, 695 nA without RTC
  • Run mode (LDO mode): 52 μA/MHz
  • Batch acquisition mode (BAM)
  • 4 μs wake-up from Stop mode
  • Brownout reset (BOR)
• Core
  • 32-bit Arm^®
    Cortex^®-M0+ CPU, frequency up to 56 MHz
• ART Accelerator
  • 1-Kbyte instruction cache allowing 0-wait-state execution from flash memory
• Benchmarks
  • 1.13 DMIPS/MHz (Drystone 2.1)
  • 134 CoreMark^® (2.4 CoreMark/MHz at 56 MHz)
  • 407 ULPMark™-CP
  • 143 ULPMark™-PP
  • 19.7 ULPMark™-CM
• Memories
  • 256-Kbyte single bank flash memory, proprietary code readout protection
  • 40-Kbyte SRAM with hardware parity check
• Rich analog peripherals (independent supply)
  • 1x 12-bit ADC (0.4 µs conversion time), up to 16-bit with hardware oversampling
  • 1x 12-bit DAC output channel, low-power sample and hold
  • 1x general-purpose operational amplifier with built-in PGA (variable gain up to 16)
  • 2x ultra-low-power comparators
• LCD driver
  • 8×48 or 4×52 segments, with step-up converter
• General-purpose inputs/outputs
  • Up to 69 fast I/Os, most of them 5 V‑tolerant
• 20 communication interfaces
  • USB 2.0 full-speed crystal-less solution with LPM and BCD
  • 7x USARTs/LPUARTs (SPI, ISO 7816, LIN, IrDA, modem)
  • 4x I2C interfaces supporting Fast-mode and Fast-mode Plus (up to 1 Mbit/s)
  • 3x SPIs, plus 4x USARTs in SPI mode
  • IRTIM (Infrared interface)
• Security
  • Customer code protection
  • 
    Robust read out protection (RDP): 3 protection level states and password-based regression (128-bit PSWD)
    
  • Hardware protection feature (HDP)
  • Secure boot
  • AES: 128/256-bit key encryption hardware accelerator
  • True random number generation, candidate for NIST SP 800-90B certification
  • Candidate for Arm^® PSA level 1 and SESIP level 3 certifications
  • 5 passive anti-tamper pins
  • 96-bit unique ID
• Clock management
  • 4 to 48 MHz crystal oscillator
  • 32 kHz crystal oscillator for RTC (LSE)
  • Internal 16 MHz factory-trimmed RC (±1%)
  • Internal low-power 32 kHz RC (±5%)
  • Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy)
  • Internal 48 MHz with clock recovery
  • PLL for system clock, USB, ADC
• 10 timers, RTC, and 2 watchdogs
  • 1x 16-bit advanced motor-control, 1x 32-bit and 3x 16-bit general purpose, 2x 16-bit basic, 3x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
  • RTC with hardware calendar, alarms and calibration
• CRC calculation unit
• Up to 21 capacitive sensing channels
  • Supporting touchkey, linear and rotary touch sensors
• 12-channel DMA controller
  • Flexible mapping (DMAMUX)
• Debug
  • Development support: serial wire debug (SWD)
• All packages are ECOPACK2 compliant.