STM32L552RET6

STM32L552RET6

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STM32L552RET6TR

Ultra-low-power with FPU Arm Cortex-M33 with Trust Zone, MCU 110 MHz with 512 kbytes of Flash memory

Supply Voltage Min Volt1.71
Supply Voltage Max Volt3.6
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
CoreArm Cortex-M33
ECCN US3A991.a.2
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeIndustrial
Package NameLQFP 64 10x10x1.4 mm

The STM32L552xx devices are an ultra-low-power microcontrollers family (STM32L5 Series) based on the high-performance Arm® Cortex®-M33 32-bit RISC core. They operate at a frequency of up to 110 MHz.The Cortex®-M33 core features a single-precision floating-point unit (FPU), which supports all the...
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Key features
  • Ultra-low-power with FlexPowerControl
    • 1.71 V to 3.6 V power supply
    • -40 °C to 85/125 °C temperature range
    • Batch acquisition mode (BAM)
    • 187 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
    • 17 nA Shutdown mode (5 wakeup pins)
    • 108 nA Standby mode (5 wakeup pins)
    • 222 nA Standby mode with RTC
    • 3.16 μA Stop 2 with RTC
    • 106 μA/MHz Run mode (LDO mode)
    • 62 μA/MHz Run mode @ 3 V (SMPS step-down converter mode)
    • 5 µs wakeup from Stop mode
    • Brownout reset (BOR) in all modes except Shutdown
  • Core
    • Arm® 32-bit Cortex®-M33 CPU with TrustZone® and FPU
  • ART Accelerator
    • 8-Kbyte instruction cache allowing 0-wait-state execution from Flash memory and external memories; frequency up to 110 MHz, MPU, 165 DMIPS and DSP instructions
  • Performance benckmark
    • 1.5 DMIPS/MHz (Drystone 2.1)
    • 442 CoreMark® (4.02 CoreMark®/MHz)
  • Energy benchmark
    • 370 ULPMark-CP® score
    • 54 ULPMark-PP® score
    • 27400 SecureMark-TLS® score
  • Memories
    • Up to 512-Kbyte Flash, two banks read-while-write
    • 256 Kbytes of SRAM including 64 Kbytes with hardware parity check
    • External memory interface supporting SRAM, PSRAM, NOR, NAND and FRAM memories
    • OCTOSPI memory interface
  • Security
    • Arm® TrustZone® and securable I/Os, memories and peripherals
    • Flexible life cycle scheme with RDP (readout protection)
    • Root of trust thanks to unique boot entry and hide protection area (HDP)
    • SFI (secure firmware installation) thanks to embedded RSS (root secure services)
    • Secure firmware upgrade support with TF-M
    • HASH hardware accelerator
    • Active tamper and protection against temperature, voltage and frequency attacks
    • True random number generator NIST SP800-90B compliant
    • 96-bit unique ID
    • 512-byte OTP (one-time programmable) for user data
  • General-purpose input/outputs
    • Up to 114 fast I/Os with interrupt capability most 5 V-tolerant and up to 14 I/Os with independent supply down to 1.08 V
  • Power management
    • Embedded regulator (LDO) with three configurable range output to supply the digital circuitry
    • Embedded SMPS step-down converter
    • External SMPS support
  • 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
    • 3 PLLs for system clock, USB, audio, ADC
  • Up to 16 timers and 2 watchdogs
    • 16x timers: 2 x 16-bit advanced motor-control, 2 x 32-bit and 5 x 16-bit general purpose, 2x 16-bit basic, 3x low-power 16-bit timers (available in Stop mode), 2x watchdogs, 2x SysTick timer
    • RTC with hardware calendar, alarms and calibration
  • Up to 19 communication peripherals
    • 1x USB Type-C™/ USB power delivery controller
    • 1x USB 2.0 full-speed crystal less solution, LPM and BCD
    • 2x SAIs (serial audio interface)
    • 4x I2C FM+(1 Mbit/s), SMBus/PMBus™
    • 6x USARTs (ISO 7816, LIN, IrDA, modem)
    • 3x SPIs (7x SPIs with USART and OCTOSPI in SPI mode)
    • 1x FDCAN controller
    • 1x SDMMC interface
  • 2 DMA controllers
    • 14 DMA channels
  • Up to 22 capacitive sensing channels
    • Support touch key, linear and rotary touch sensors
  • Rich analog peripherals (independent supply)
    • 2x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 µA/Msps
    • 2x 12-bit DAC outputs, low-power sample and hold
    • 2x operational amplifiers with built-in PGA
    • 2x ultra-low-power comparators
    • 4x digital filters for sigma delta modulator
  • CRC calculation unit
  • Debug
    • Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™ (ETM)
Out of Stock
Quantity $ per unit Savings
1-999$10.360%
1000-10000$7.0332%
Contact sales
$10.36
Supply Voltage Min Volt1.71
Supply Voltage Max Volt3.6
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
CoreArm Cortex-M33
ECCN US3A991.a.2
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeIndustrial
Package NameLQFP 64 10x10x1.4 mm

The STM32L552xx devices are an ultra-low-power microcontrollers family (STM32L5 Series) based on the high-performance Arm® Cortex®-M33 32-bit RISC core. They operate at a frequency of up to 110 MHz.The Cortex®-M33 core features a single-precision floating-point unit (FPU), which supports all the...
Read More

Key features
  • Ultra-low-power with FlexPowerControl
    • 1.71 V to 3.6 V power supply
    • -40 °C to 85/125 °C temperature range
    • Batch acquisition mode (BAM)
    • 187 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
    • 17 nA Shutdown mode (5 wakeup pins)
    • 108 nA Standby mode (5 wakeup pins)
    • 222 nA Standby mode with RTC
    • 3.16 μA Stop 2 with RTC
    • 106 μA/MHz Run mode (LDO mode)
    • 62 μA/MHz Run mode @ 3 V (SMPS step-down converter mode)
    • 5 µs wakeup from Stop mode
    • Brownout reset (BOR) in all modes except Shutdown
  • Core
    • Arm® 32-bit Cortex®-M33 CPU with TrustZone® and FPU
  • ART Accelerator
    • 8-Kbyte instruction cache allowing 0-wait-state execution from Flash memory and external memories; frequency up to 110 MHz, MPU, 165 DMIPS and DSP instructions
  • Performance benckmark
    • 1.5 DMIPS/MHz (Drystone 2.1)
    • 442 CoreMark® (4.02 CoreMark®/MHz)
  • Energy benchmark
    • 370 ULPMark-CP® score
    • 54 ULPMark-PP® score
    • 27400 SecureMark-TLS® score
  • Memories
    • Up to 512-Kbyte Flash, two banks read-while-write
    • 256 Kbytes of SRAM including 64 Kbytes with hardware parity check
    • External memory interface supporting SRAM, PSRAM, NOR, NAND and FRAM memories
    • OCTOSPI memory interface
  • Security
    • Arm® TrustZone® and securable I/Os, memories and peripherals
    • Flexible life cycle scheme with RDP (readout protection)
    • Root of trust thanks to unique boot entry and hide protection area (HDP)
    • SFI (secure firmware installation) thanks to embedded RSS (root secure services)
    • Secure firmware upgrade support with TF-M
    • HASH hardware accelerator
    • Active tamper and protection against temperature, voltage and frequency attacks
    • True random number generator NIST SP800-90B compliant
    • 96-bit unique ID
    • 512-byte OTP (one-time programmable) for user data
  • General-purpose input/outputs
    • Up to 114 fast I/Os with interrupt capability most 5 V-tolerant and up to 14 I/Os with independent supply down to 1.08 V
  • Power management
    • Embedded regulator (LDO) with three configurable range output to supply the digital circuitry
    • Embedded SMPS step-down converter
    • External SMPS support
  • 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
    • 3 PLLs for system clock, USB, audio, ADC
  • Up to 16 timers and 2 watchdogs
    • 16x timers: 2 x 16-bit advanced motor-control, 2 x 32-bit and 5 x 16-bit general purpose, 2x 16-bit basic, 3x low-power 16-bit timers (available in Stop mode), 2x watchdogs, 2x SysTick timer
    • RTC with hardware calendar, alarms and calibration
  • Up to 19 communication peripherals
    • 1x USB Type-C™/ USB power delivery controller
    • 1x USB 2.0 full-speed crystal less solution, LPM and BCD
    • 2x SAIs (serial audio interface)
    • 4x I2C FM+(1 Mbit/s), SMBus/PMBus™
    • 6x USARTs (ISO 7816, LIN, IrDA, modem)
    • 3x SPIs (7x SPIs with USART and OCTOSPI in SPI mode)
    • 1x FDCAN controller
    • 1x SDMMC interface
  • 2 DMA controllers
    • 14 DMA channels
  • Up to 22 capacitive sensing channels
    • Support touch key, linear and rotary touch sensors
  • Rich analog peripherals (independent supply)
    • 2x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 µA/Msps
    • 2x 12-bit DAC outputs, low-power sample and hold
    • 2x operational amplifiers with built-in PGA
    • 2x ultra-low-power comparators
    • 4x digital filters for sigma delta modulator
  • CRC calculation unit
  • Debug
    • Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™ (ETM)