STM32L433VCI6TR [STMicroelectronics]

The STM32L433xx devices are ultra-low-power microcontrollers based on the high-performance Arm^® Cortex^®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision that supports all Arm^® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32L433xx devices embed high-speed memories (flash memory up to 256 Kbyte, 64 Kbyte of SRAM), a Quad SPI flash memories interface (available on all packages) and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.

The STM32L433xx devices embed several protection mechanisms for embedded flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall.

The devices offer a fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, two DAC channels, an internal voltage reference buffer, a low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM timer dedicated to motor control, four general-purpose 16-bit timers, and two 16-bit low-power timers.

In addition, up to 21 capacitive sensing channels are available. The devices also embed an integrated LCD driver 8x40 or 4x44, with internal step-up converter.

They also feature standard and advanced communication interfaces, namely three I2Cs, three SPIs, three USARTs and one Low-Power UART, one SAI, one SDMMC, one CAN, one USB full-speed device crystal less, one SWPMI (single wire protocol master interface).

The STM32L433xx operates in the -40 to +85 °C (+105 °C junction), -40 to +105 °C (+125 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to 3.6 V V_DD power supply when using internal LDO regulator and a 1.05 to 1.32V V_DD12 power supply when using external SMPS supply. A comprehensive set of power-saving modes makes possible the design of low-power applications.

Some independent power supplies are supported: analog independent supply input for ADC, DAC, OPAMP and comparators, and 3.3 V dedicated supply input for USB. A VBAT input makes it possible to backup the RTC and backup registers. Dedicated V_DD12 power supplies can be used to bypass the internal LDO regulator when connected to an external SMPS.

The STM32L433xx family offers eight packages from 48 to 100-pin packages.

• Includes ST state-of-the-art patented technology
  • Ultra-low-power with FlexPowerControl
    
    • 1.71 V to 3.6 V power supply
    
    
    • -40 °C to 85/105/125 °C temperature range
    
    
    • 200 nA in V_BAT mode: supply for RTC and 32x32-bit backup registers
    
    
    • 8 nA Shutdown mode (5 wakeup pins)
    
    
    • 28 nA Standby mode (5 wakeup pins)
    
    
    • 280 nA Standby mode with RTC
    
    
    • 1.0 µA Stop 2 mode, 1.28 µA with RTC
    
    
    • 84 µA/MHz run mode (LDO Mode)
    
    
    • 36 μA/MHz run mode (@3.3 V SMPS Mode)
    
    
    • Batch acquisition mode (BAM)
    
    
    • 4 µs wakeup from Stop mode
    
    
    • Brown out reset (BOR)
    
    
    • Interconnect matrix
    
    
  • Core: Arm^® 32-bit Cortex^®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait-state execution from flash memory, frequency up to 80 MHz, MPU, 100DMIPS and DSP instructions
    
  • Performance benchmark
    
    • 1.25 DMIPS/MHz (Drystone 2.1)
    
    
    • 273.55 CoreMark^® (3.42 CoreMark/MHz @ 80 MHz)
    
    
  • Energy benchmark
    
    • 347 ULPMark™ CP score
    
    
    • 121 ULPMark™ PP score
    
    
  • Clock Sources
    
    • 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
    
    
    • 2 PLLs for system clock, USB, audio, ADC
    
    
  • Up to 83 fast I/Os, most 5 V-tolerant
    
  • RTC with HW calendar, alarms and calibration
    
  • LCD 8× 40 or 4× 44 with step-up converter
    
  • Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
    
  • 11x timers: 1x 16-bit advanced motor-control, 1x 32-bit and 2x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
    
  • Memories
    
    • Up to 256 KB single bank flash, proprietary code readout protection
    
    
    • 64 KB of SRAM including 16 KB with hardware parity check
    
    
    • Quad SPI memory interface
    
    
  • Rich analog peripherals (independent supply)
    
    • 1x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 µA/Msps
    
    
    • 2x 12-bit DAC output channels, low-power sample and hold
    
    
    • 1x operational amplifier with built-in PGA
    
    
    • 2x ultra-low-power comparators
    
    
  • 17x communication interfaces
    
    • USB 2.0 full-speed crystal less solution with LPM and BCD
    
    
    • 1x SAI (serial audio interface)
    
    
    • 3x I2C FM+(1 Mbit/s), SMBus/PMBus
    
    
    • 4x USARTs (ISO 7816, LIN, IrDA, modem)
    
    
    • 1x LPUART (Stop 2 wake-up)
    
    
    • 3x SPIs (and 1x Quad SPI)
    
    
    • CAN (2.0B Active) and SDMMC interface
    
    
    • SWPMI single wire protocol master I/F
    
    
    • IRTIM (Infrared interface)
    
    
  • 14-channel DMA controller
    
  • True random number generator
    
  • CRC calculation unit, 96-bit unique ID
    
  • Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
    
  • All packages are ECOPACK2 compliant