Overview
The STM32L432KCU6 is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This microcontroller operates at a maximum frequency of 80 MHz and is designed for applications requiring minimal power consumption. It features a Floating Point Unit (FPU) single precision, supporting all Arm® single-precision data-processing instructions and data types, as well as a full set of DSP instructions and a memory protection unit (MPU) for enhanced application security.
Key Specifications
| Specification | Details |
|---|---|
| Core | ARM Cortex-M4 32-bit RISC |
| Maximum Operating Frequency | 80 MHz |
| Flash Memory | Up to 256 KB single bank Flash with proprietary code readout protection |
| SRAM | 64 KB of SRAM including 16 KB with hardware parity check |
| Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40 °C to +85/105/125 °C |
| ADC Resolution | 12-bit, up to 16-bit with hardware oversampling |
| DAC Channels | 2x 12-bit DAC output channels |
| Timers | 11 timers: 1x 32-bit, 5x 16-bit general purpose, 2x 16-bit low-power timers, 2x watchdogs, SysTick timer |
| Communication Interfaces | CAN, I2C, SAI, SPI, USART, USB |
| I/Os | Up to 26 fast I/Os, most of which are 5 V-tolerant |
| Package | UFQFPN-32 |
Key Features
- Ultra-low-power operation with FlexPowerControl, featuring various power-saving modes such as Shutdown, Standby, and Stop 2 modes.
- Rich set of peripherals including ADC, DAC, comparators, operational amplifier, and multiple communication interfaces (USB, UART, SPI, I2C, CAN).
- Integrated memory protection unit (MPU) and true random number generator (TRNG) for enhanced security.
- Quad SPI memory interface and independent power supplies for analog peripherals.
- Support for capacitive sensing with up to 3 channels.
- On-chip debug support through ST-LINK/V2-1 debugger/programmer.
Applications
The STM32L432KCU6 is tailored for a wide range of applications due to its low power consumption and versatile features. It is particularly suited for:
- Wearable devices such as fitness trackers and smartwatches, where power efficiency is crucial.
- Internet-connected devices for data collection from the environment.
- Industrial automation setups, enabling precise control over motors, sensors, and other peripherals.
- Embedded systems requiring a balance between performance and power efficiency.
Q & A
- What is the maximum operating frequency of the STM32L432KCU6?
The maximum operating frequency is 80 MHz.
- What is the range of the supply voltage for the STM32L432KCU6?
The supply voltage ranges from 1.71 V to 3.6 V.
- How much flash memory does the STM32L432KCU6 have?
The STM32L432KCU6 has up to 256 KB of single bank Flash memory.
- What types of communication interfaces are available on the STM32L432KCU6?
The microcontroller features CAN, I2C, SAI, SPI, USART, and USB interfaces.
- What is the resolution of the ADC on the STM32L432KCU6?
The ADC resolution is 12-bit, with the option for up to 16-bit with hardware oversampling.
- How many timers does the STM32L432KCU6 have?
The microcontroller has 11 timers, including 1x 32-bit, 5x 16-bit general purpose, and 2x 16-bit low-power timers, along with watchdogs and a SysTick timer.
- What is the operating temperature range of the STM32L432KCU6?
The operating temperature range is -40 °C to +85/105/125 °C.
- Does the STM32L432KCU6 support capacitive sensing?
Yes, it supports up to 3 capacitive sensing channels.
- What kind of memory protection does the STM32L432KCU6 offer?
The microcontroller features a memory protection unit (MPU) and various protection mechanisms for embedded Flash memory and SRAM, including readout protection, write protection, and proprietary code readout protection.
- Can the STM32L432KCU6 be used with Arduino shields?
Yes, the STM32 Nucleo board, which uses the STM32L432KCU6, supports Arduino Uno Revision 3 connectivity and ST Morpho extension pin headers.
- What is the package type of the STM32L432KCU6?
The package type is UFQFPN-32.
