STM32U3B5CIU6Q

Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS

Parameters

Supply Voltage Min Volt	1.71
Supply Voltage Max Volt	3.6
Operating Temp Min Celsius	-40.0
Operating Temp Max Celsius	85.0
Core	Arm Cortex-M33 with TrustZone
ECCN US	3A991.a.2
ECCN EU	NEC
Packing Type	Tray
RoHs compliant	Ecopack2
Grade	Industrial
Package Name	UFQFPN 48 7x7x0.55 mm

Description

The STM32U3B5xx devices belong to an ultra-low-power microcontrollers family (STM32U3 series) based on the high-performance Arm® Cortex®-M33 32-bit RISC core. They operate at a frequency of up to 96 MHz.The Cortex®-M33 core features a single‑precision FPU (floating‑point unit),...
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The STM32U3B5xx devices belong to an ultra-low-power microcontrollers family (STM32U3 series) based on the high-performance Arm^® Cortex^®-M33 32-bit RISC core. They operate at a frequency of up to 96 MHz.

The Cortex^®-M33 core features a single‑precision FPU (floating‑point unit), that supports all the Arm^® single‑precision data‑processing instructions and all the data types.

The Cortex^®-M33 core also implements a full set of DSP (digital signal processing) instructions and a MPU (memory protection unit) that enhances the application security.

The STM32U3 series is the first STM32 series based on near‑threshold voltage technology to deliver breakthrough improvement in battery life. With near‑threshold technology, STM32U3 devices reduce the active consumption down to 11 μA/MHz, resulting in significantly longer battery life for any application.

The devices embed high‑speed memories (up to 2‑Mbyte flash memory and 640‑Kbyte SRAM), one Octo/Quad‑SPI flash memory interface, an extensive range of enhanced I/Os, peripherals connected to three APB buses, two AHB buses, and a 32‑bit multi‑AHB bus matrix.

The STM32U3B5xx devices embed several protection mechanisms for embedded flash memory and SRAM: readout protection, write protection, secure proprietary code readout protection, secure, and hide protection areas.

The devices embed a hardware signal processor (HSP) to accelerate digital signal processing and compute neural networks.

These devices offer two 12-bit ADCs (2.5 Msps), two comparators, two operational amplifiers, two DAC channels, an internal voltage reference buffer, a low-power RTC, three general-purpose 32-bit timers, two 16-bit PWM timer dedicated to motor control, four general-purpose 16-bit timers, two basic 16-bit timers, and up to four 16‑bit low‑power timers.

The STM32U3B5xx devices embed a low-power digital filter dedicated to audio signals (ADF), with one filter supporting sound-activity detection. In addition, up to 24 capacitive sensing channels are available.

The STM32U3B5xx series also feature standard and advanced communication interfaces such as:

And several peripherals reinforcing security:

The STM32U3B5xx devices offer high protection against transient and environmental perturbation attacks thanks to several internal monitoring generating secret data erase in case of attack.

The devices operate in the -40 to +105 °C (+110 °C junction) temperature ranges from a 1.71 to 3.6 V power supply.

Some independent power supplies are supported like an analog independent supply input for ADC, DAC, OPAMPs, and comparators, a 3.3 V dedicated supply input for USB and up to 14 I/Os, that can be supplied independently down to 1.08 V. A VBAT input is available for connecting a backup battery in order to preserve the RTC functionality and to backup 32 32‑bit registers.

The STM32U3B5xx devices offer 15 packages from 48-pin to 144-pin.

Key features

Key features
Includes ST state-of-the-art patented technology. Ultra-low-power 1.71 V to 3.6 V power supply -40 °C to +105 °C temperature range V_BAT mode: supply for RTC, 32 x 32-bit backup registers 1.6 μA Stop 3 mode with 8-Kbyte SRAM 3.15 μA Stop 3 mode with full SRAM 3.5 μA Stop 2 mode with 8-Kbyte SRAM 5.7 μA Stop 2 mode with full SRAM 12 μA/MHz Run mode @ 3.3 V, 48 MHz (While(1) SMPS step-down converter mode) 15.5 μA/MHz Run mode @ 3.3 V, 48 MHz (CoreMark^® SMPS step-down converter mode) 20 μA/MHz Run mode @ 3.3 V, 96 MHz (CoreMark^® SMPS step-down converter mode) Brownout reset (BOR) in all modes except Shutdown mode Arm^® 32-bit Cortex^®-M33 CPU with TrustZone^® and FPU ART Accelerator 8-Kbyte instruction cache allowing 0-wait-state execution from flash and external memories: frequency up to 96 MHz, MPU, 144 DMIPS and DSP instructions Mathematical coprocessor Hardware signal processor (HSP) for digital signal and artificial intelligence processing Power management Embedded regulator (LDO) and SMPS step-down converter supporting switch on-the-fly and voltage scaling Benchmarks 395.4 CoreMark^®(4.12 CoreMark^®/MHz) Memories Up to 2-Mbyte flash memory with ECC, 2 banks read-while-write 640 Kbytes of SRAM including 384 Kbytes with hardware parity check OCTOSPI external memory interface supporting SRAM, PSRAM, NOR, NAND, and FRAM memories Security Arm^® TrustZone^® and securable I/Os, memories, and peripherals Flexible life cycle scheme with RDP and password protected debug Root of trust due to unique boot entry and secure hide protection area (HDP) Secure firmware installation (SFI) thanks to embedded root secure services (RSS) Secure firmware upgrade Support of Trusted firmware for Cortex^®M (TF-M) Public key accelerator, SCA resistant Key hardware protection Attestation keys HASH hardware accelerator True random number generator, NIST SP800-90B compliant 96-bit unique ID 512-byte OTP (one-time programmable) Antitamper protection Clock management 4 to 50 MHz crystal oscillator 32.768 kHz crystal oscillator for RTC (LSE) Internal 16 MHz factory-trimmed RC (±1 %) Internal low-power RC with frequency 32 kHz or 250 Hz (±5 %) 2 internal multispeed 3 MHz to 96 MHz oscillators Internal 48 MHz with clock recovery Accurate MSI in PLL-mode and up to 96 MHz with 32.768 kHz, 16 MHz, or 32 MHz crystal oscillator General-purpose inputs/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 Up to 17 timers and 2 watchdogs 2x 16-bit advanced motor‑control, 3x 32‑bit and 4x 16‑bit general purpose, 2x 16‑bit basic, 4x low‑power 16‑bit timers (available in Stop mode), 2x watchdogs, 2x SysTick timer RTC with hardware calendar, alarms, and calibration Up to 23 communication peripherals 1 USB 2.0 full-speed controller. USB full-speed functionality in both device and host modes is supported when using the MSI in PLL mode with the LSE clock. 1 SAI (serial audio interface) 4 I2C FM+(1 Mbit/s), SMBus/PMBus^® 2 I3C (SDR), with support of I2C FM+ mode 3 USARTs and 2 UARTs (SPI, ISO 7816, LIN, IrDA, modem), 1 LPUART 4 SPIs (8 SPIs including 1 with OCTOSPI + 3 with USART) 2 CAN FD controllers 1 SDMMC interface 1 audio digital filter with sound-activity detection 12-channel GPDMA controller, functional in Sleep and Stop modes Up to 24 capacitive sensing channels Support touch key, linear, and rotary touch sensors Rich analog peripherals (independent supply) 2× 12-bit ADCs 2.5 Msps, with hardware oversampling 12-bit DAC module with 2 D/A converters, low-power sample and hold, autonomous in Stop 1 mode 2 operational amplifiers with built-in PGA 2 ultra-low-power comparators CRC calculation unit Debug Development support: serial-wire debug (SWD), JTAG, Embedded Trace Macrocell™ (ETM) All packages are ECOPACK2 compliant

In stock

Quantity	$ per unit	Savings
1-9	$9.28	0%
10-24	$6.96	25%
25-99	$6.64	29%
100-249	$5.76	38%
250-499	$5.50	41%
500	$5.02	46%
500 +	Contact sales

$9.28