Product overview
Description
The STM32WL33xx is a high performance ultra-low power wireless application processor, intended for RF wireless applications in the sub-1 GHz band. It is designed to operate in both the license-free ISM and SRD frequency bands such as 433, 868, and 915 MHz.
It adopts a single-core architecture embedding an Arm® 32-bit Cortex®-M0+ CPU that can operate up to 64 MHz. It integrates high-speed and flexible memory types: up to 256 Kbyte flash memory, and up to 32 Kbyte RAM, one-time programmable (OTP) memory area of 1 Kbyte.
The STM32WL33xx embeds a wide set of peripherals, including a 20-pin (16 segments + 4 commons) LCD driver, 12-bit, 8 channel ADC, analog comparator, DAC, LC sensor controller, RTC, IWDG, general purpose timers, AES-128, RNG, CRC, communication interfaces such as USART, SPI, and I2C. Moreover, the security features enable secure boot with USART/SWD block (write protection) and sensitive information storage in flash (read-out protection).
Direct data transfer between memory and peripherals and from memory-to-memory is supported by seven DMA channels with fully-flexible channel mapping by the DMAMUX peripheral.
It can be configured to support standalone or network processor applications. In the first configuration, the STM32WL33xx operates as single device in the application for managing both the application code and proprietary sub-1 GHz protocol stacks.
It operates in the -40 to +105 °C temperature range from a 1.7 V to 3.6 V power supply. A comprehensive set of power-saving modes enables the design of low-power applications.
The integrated highly efficient SMPS step-down converter together with the state transition speed between low-power and active states minimize in every condition the average current consumption enabling the STM32WL33xx to be the wireless application processor most suited for battery-operated applications.
The STM32WL33xx comes in different package versions supporting up to 32 I/Os for the VFQFPN48 package and 17 I/Os for the VFQFPN32 package.
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All features
- Includes ST state-of-the-art patented technology
- Ultra-low power sub-1GHz wireless system-on-chip
- Programmable MCU
- Core: Arm® Cortex®-M0+ 32-bit, running up to 64 MHz
- Program memory: 64-Kbyte / 128-Kbyte / 256-Kbyte flash memory
- Data memory: 16-Kbyte / 32-Kbyte SRAM (full retention)
- Additional storage: 1-Kbyte OTP (user data)
- Radio
- Frequency bands: 159-185 MHz, 413-479 MHz, 826-958 MHz
- Air data rate from 0.1 to 600 kbit/s
- Programmable TX power up to +20dBm
- RX sensitivity @ 1% BER:
- -132 dBm @300 bit/s 433 MHz OOK
- -128 dBm @300 bit/s 868 MHz 2(G)FSK
- -112 dBm @38.4 bit/s 868 MHz 2(G)FSK
- Modulation schemes:
- 2(G)FSK, 2(G)MSK, 4(G)FSK
- OOK, ASK
- D-BPSK
- DSSS (direct sequence spread spectrum)
- I/Q channels data access
- Compatible with proprietary and standardized wireless protocols (W-MBUS, Sigfox, Mioty, KNX-RF, IEEE 802.15.4g, others)
- Suitable for worldwide certifications:
- Europe: ETSI EN 300 220, category 1 compliant, ETSI EN 303 131
- US: FCC part 15 and part 90
- Japan: ARIB STD T67, T108
- Fully-configurable hardware sequencer for autonomous radio operations (Sniff mode, Frequency hopping, Low Duty Cycle mode, Listen before talk)
- Wakeup radio receiver
- Low power autonomous wakeup receiver (LPAWUR), featuring:
- OOK data receiver channel
- Sensitivity: -50 dBm
- Current consumption: 4 µA in always-on autonomous mode
- Low power autonomous wakeup receiver (LPAWUR), featuring:
- Ultra-low power architecture
- Dynamic current consumption: 21 µA/MHz
- 14 nA in Shutdown mode
- 960 nA in Deepstop mode
- Radio only consumption:
- 4 mA in RX
- 8 mA in TX @ +10 dBm
- 78 mA in TX @ +20 dBm
- Consumption: 1.3 mA current in WFI conditions (direct HSE mode)
- Wakeup capability from both Deepstop and Shutdown modes
- Peripherals and analog front-end
- LCD driver with up to 96 (12x8) or 64 (16x4) matrix elements
- 12-bit ADC: up to 1 Msample/s with 8 single ended channels (or 4 differentials)
- 1x comparator
- 1x 6-bit sample-and-hold DAC output
- 1x LC sensor controller (for autonomous rotary-wheel based flow metering)
- Battery voltage monitoring with low-level detection
- Temperature monitoring
- Communication interfaces
- Up to 32 GPIOs (VFQFPN48), all with retention capability
- Up to 17 GPIOs (VFQFPN32), all with retention capability
- 1x USART. Supports of LIN, Smartcard Protocol, IrDA, SIR ENDEC specifications, and modem operations (CTS/RTS)
- 1x LPUART (available also in low-power mode), with wakeup capability
- 1x SPI
- 1x SPI with I2S interface multiplexed
- 2x I2C (SMBus/PMBus)
- 1x DMA 8 channels controller, supporting ADC, DAC, SPIs, I2Cs, USART, LPUART, timers, AES
- Clock sources and timers
- Flexible clocking scheme, featuring:
- 64 MHz (HSI or PLL)
- Fail-safe 48 MHz crystal oscillator (HSE), with integrated trimming capacitors
- 32 kHz crystal oscillator (LSE)
- Integrated low-power 32 kHz RC (LSI)
- 1x 16-bits, four channels general purpose timer
- 1x 16-bits, two channels general purpose timer
- 1x RTC
- 1x independent watchdog
- Radio timer with wakeup capability
- Flexible clocking scheme, featuring:
- Security
- Secure bootloader with SWD disabling
- AES-128 co-processor and 16-bit TRNG
- Embedded UART bootloader with selectable write and read-out protection
- Operating range and reset
- Ultra-low-power power-on-reset (POR) and power-down-reset (PDR)
- Programmable voltage detector (PVD)
- Supply voltage: from 1.7 to 3.6 V
- Temperature range: -40 ºC to 105 ºC
- All packages are ECOPACK2 compliant
Circuit Diagram
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All resources
| Resource title | Version | Latest update |
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System View Description (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 17 Oct 2024 | 17 Oct 2024 |
IBIS models (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 3.0 | 27 Jun 2024 | 27 Jun 2024 |
Bill of Materials (5)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 26 Apr 2022 | 26 Apr 2022 | |
| ZIP | 1.0 | 26 Apr 2022 | 26 Apr 2022 | |
| ZIP | 2.0 | 05 Oct 2023 | 05 Oct 2023 | |
| ZIP | 2.0 | 17 Jun 2022 | 17 Jun 2022 | |
| ZIP | 1.0 | 26 Apr 2022 | 26 Apr 2022 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STM32WL33KBV6 | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
| STM32WL33KBV6TR | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
| STM32WL33KBV7 | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
| STM32WL33KBV7TR | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
(**) 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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| STM32WL33KBV7TR | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32WL33KBV6TR | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32WL33KBV7 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32WL33KBV6 | | | distributors No availability of distributors reported, please contact our sales office |
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STM32WL33KBV7TR Active
STM32WL33KBV6TR Active
STM32WL33KBV7 Active
STM32WL33KBV6 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