Product overview
Description
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 VDD power supply when using internal LDO regulator and a 1.05 to 1.32V VDD12 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 VDD12 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.
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All features
- 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 VBAT 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
- Ultra-low-power with FlexPowerControl
- Includes ST state-of-the-art patented technology
Circuit Diagram
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All resources
| Resource title | Version | Latest update |
|---|
System View Description (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.4 | 31 May 2023 | 31 May 2023 |
IBIS models (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 6.0 | 07 Jan 2022 | 07 Jan 2022 |
BSDL files (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 3.4 | 12 May 2022 | 12 May 2022 |
Quality and Reliability
| Part Number | Marketing Status | Package | SMPS | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|---|
| STM32L433CBT6 | Active | LQFP 48 7x7x1.4 mm | - | Industrial | Ecopack2 | |
| STM32L433CBT7 | Active | LQFP 48 7x7x1.4 mm | - | Industrial | Ecopack2 | |
| STM32L433CBU6 | Active | UFQFPN 48 7x7x0.55 mm | - | Industrial | Ecopack2 | |
| STM32L433CBY6TR | Active | WLCSP 49 3.2x3.2x0.6 P 0.4 mm | - | Industrial | Ecopack2 | |
STM32L433CBY6TR
Package:
WLCSP 49 3.2x3.2x0.6 P 0.4 mmMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | D/A Converters (typ) (12-bit) | Timers (typ) (16-bit) | Timers (typ) (32-bit) | Number of Channels (typ) | SMPS | Number of Channels (typ) | UART (typ) | I/Os (High Current) | Integrated op-amps | Comparator | SPI (typ) | USART (typ) | Number of Channels (typ) | I2S (typ) | Advanced Motor Control Timers | CAN (2.0) | CAN (FD) | ||
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| STM32L433CBU6 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32L433CBT7 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32L433CBT6 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32L433CBY6TR | | | distributors No availability of distributors reported, please contact our sales office |
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STM32L433CBU6 Active
STM32L433CBT7 Active
STM32L433CBT6 Active
STM32L433CBY6TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors