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STM32L433CBT6

STM32L433CBT6

STMicroelectronics
ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 128KB (128K x 8) FLASH 48-LQFP (7x7)
Active12,988 in stock
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Overview

The STM32L433CBT6 is an ultra-low-power microcontroller based on the ARM Cortex-M4 core with a Floating Point Unit (FPU) running at up to 80MHz. It features 128KB of Flash memory and 64KB of RAM, integrating specialized peripherals such as an LCD driver and a dedicated FlexPowerControl system to minimize energy consumption. This device is designed to balance high-performance digital signal processing and mathematical tasks with the strict power requirements of battery-operated systems.

Why Choose This Part

The ST ART Accelerator and FlexPowerControl allow the MCU to achieve 100 DMIPS while maintaining a very low dynamic current consumption of 36 microamps per MHz. Its rich peripheral set, including an LCD controller and diverse connectivity options like USB and CAN, reduces the need for external components in compact designs.

Applications

Battery-Powered Wearables
Utilizes ultra-low-power modes as low as 8nA in shutdown to extend the battery life of fitness trackers and smartwatches.
Industrial IoT Sensors
Leverages the 12-bit ADC, DAC, and various serial interfaces like CANbus and QSPI for remote monitoring and data logging.
Portable Medical Devices
The integrated LCD driver and low-power run modes are ideal for handheld glucose meters and blood pressure monitors.
Smart Metering
Employs the hardware CRC and Random Number Generator (RNG) for secure and reliable utility data transmission.

Key Specifications

Speed 80MHz
RAM Size 64K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, LCD, PWM, WDT
Connectivity CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 38
Core Processor ARM Cortex-M4
Package / Case 48-LQFP
Data Converters A/D 10x12b; D/A 2x12b
Oscillator Type Internal
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 48-LQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

Getting Started

Developers can begin evaluation with the NUCLEO-L433RC-P development board or the STM32L433-Discovery kit. Firmware development is supported by the STM32CubeIDE ecosystem, which includes the STM32CubeMX tool for clock tree configuration and peripheral initialization. For hardware debugging, a standard ST-LINK/V2 or V3 debugger is required for the SWD interface.

Dev Boards

Development boards and breakout modules featuring the STM32L433CBT6 or compatible chips — ready to use for prototyping.

NUCLEO-L432KC STMicroelectronics
Development Boards & Kits - ARM STM32 Nucleo-32 dev board STM32L432KC, supports Arduino nano conn
Digi-Key Mouser 2,384 in stock
NUCLEO-L476RG STMicroelectronics
STM32L476 Nucleo-64 STM32L4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 2,875 in stock
NUCLEO-L452RE STMicroelectronics
STM32L452 Nucleo-64 STM32L4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 546 in stock
B-L4S5I-IOT01A STMicroelectronics
SPBTLE-RF, STM32L4S5 STM32L4+ 802.11 b/g/n (WiFi/WLAN/Wi-Fi 4), Bluetooth® Smart 4.x Low Energy (BLE) Transceiver 2.4GHz
Digi-Key 171 in stock
STEVAL-STWINKT1B STMicroelectronics
IIS3DWB, ISM330DHCX, IIS2DH, IMP34DT05, LPS22HH, MP23ABS1, STM32L4R9, STWIN - Accelerometer, Gyroscope, Humidity, Magnet
Digi-Key 47 in stock
Part of STM32 family » STM32L433

STM32L433 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Peripherals I/O Pins Package ADC/DAC Flash Stock
STM32L433CBT6 (this part) Brown-out Detect/R.. 38 LQFP-48 A/D 10x12b; D/A 2x.. 128KB 12,988
STM32L433VCT6 Brown-out Detect/R.. 83 LQFP-100 A/D 16x12b; D/A 2x.. 256KB 421
STM32L433CCU6 Brown-out Detect/R.. 38 UFQFN-48 A/D 10x12b; D/A 2x.. 256KB 3,110
STM32L433CBU6 Brown-out Detect/R.. 38 UFQFN-48 A/D 10x12b; D/A 2x.. 128KB 2,059
STM32L433RCT6 Brown-out Detect/R.. 52 LQFP-64 A/D 16x12b; D/A 2x.. 256KB 282
Also available as: STM32L433CCT6

Also Consider

STM32L433CCT6 STMicroelectronics - Provides 256KB of Flash memory if the 128KB in the CBT6 variant is insufficient for your application code.
ATSAML21G18B MCHPMicrochip Technology - An alternative ultra-low-power ARM Cortex-M0+ MCU with extremely low active power consumption for less computationally intensive tasks.
STM32L431CBT6 STMicroelectronics - A pin-compatible alternative for designs that do not require the integrated LCD controller or USB support.