Overview
The STM32L442KCU6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L4 series. It is 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 includes a Floating Point Unit (FPU) that supports 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.
The device features high-speed memories, including 256 Kbyte of Flash memory and 64 Kbyte of SRAM, along with a Quad SPI flash memory interface. It also includes 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 STM32L442KCU6 is designed for low-power applications, offering various power-saving modes and independent power supplies for analog components such as ADC, DAC, OPAMP, and comparators.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® Cortex®-M4 32-bit RISC core with FPU, up to 80 MHz |
| Flash Memory | 256 KB single bank Flash |
| SRAM | 64 KB, including 16 KB with hardware parity check |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to +85/105/125 °C |
| ADC | 12-bit, 5 Msps, up to 16-bit with hardware oversampling |
| DAC | 2x 12-bit output channels, low-power sample and hold |
| Timers | 1x 32-bit, 5x 16-bit, 2x low-power 16-bit timers |
| Communication Interfaces | USB 2.0, SAI, I2C, USART, SPI, CAN 2.0B |
| Package | UFQFPN 32 5x5x0.55 mm |
| Power Modes | Shutdown, Standby, Stop 2 mode, Run mode |
| Current Consumption | 8 nA Shutdown, 28 nA Standby, 84 μA/MHz Run mode |
Key Features
- Ultra-low-power with FlexPowerControl
- Arm® Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™), frequency up to 80 MHz
- Memory Protection Unit (MPU) for enhanced security
- High-speed memories: 256 KB Flash, 64 KB SRAM
- Quad SPI flash memory interface
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, operational amplifier, comparators
- AES hardware accelerator for encryption
- Multiple communication interfaces: USB, SAI, I2C, USART, SPI, CAN 2.0B
- Low-power timers and watchdogs
- Capacitive sensing channels
- Comprehensive set of power-saving modes
Applications
The STM32L442KCU6 is suitable for a wide range of applications requiring low power consumption and high performance, such as:
- IoT devices and smart sensors
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Consumer electronics and wearables
- Automotive systems and telematics
- Energy management and metering systems
Q & A
- What is the core architecture of the STM32L442KCU6?
The STM32L442KCU6 is based on the Arm® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU), operating at up to 80 MHz.
- How much Flash and SRAM memory does the STM32L442KCU6 have?
The device features 256 KB of Flash memory and 64 KB of SRAM.
- What is the power supply range for the STM32L442KCU6?
The power supply range is from 1.71 V to 3.6 V.
- What are the key analog peripherals available on the STM32L442KCU6?
The device includes a 12-bit ADC, 12-bit DAC channels, an operational amplifier, and ultra-low-power comparators.
- Does the STM32L442KCU6 support encryption?
Yes, it includes an AES hardware accelerator for 128/256-bit key encryption.
- What communication interfaces are available on the STM32L442KCU6?
The device supports USB 2.0, SAI, I2C, USART, SPI, and CAN 2.0B interfaces.
- What are the power-saving modes available on the STM32L442KCU6?
The device offers Shutdown, Standby, Stop 2 mode, and Run mode, among others.
- What is the temperature range for the STM32L442KCU6?
The operating temperature range is from -40 °C to +85/105/125 °C.
- Is the STM32L442KCU6 suitable for industrial applications?
Yes, it is suitable for industrial automation and control systems due to its robust features and low power consumption.
- What package type is the STM32L442KCU6 available in?
The device is available in a UFQFPN 32 5x5x0.55 mm package.
