Overview
The STM32L422KBT6 is a highly advanced microcontroller from STMicroelectronics, part of the STM32L4 series. It is based on the Arm® Cortex®-M4 core with a floating-point unit (FPU), offering high performance and low power consumption. This microcontroller is designed for applications requiring high processing capabilities, low energy usage, and a wide range of peripherals. It is particularly suited for IoT, industrial, and consumer electronics where power efficiency and robust performance are critical.
Key Specifications
| Specification | Value |
|---|---|
| Data Bus Width | 32 bit |
| ADC Resolution | 2 x 12 bit (up to 16 bit with hardware oversampling) |
| Maximum Clock Frequency | 80 MHz |
| Number of I/Os | 26 I/Os (up to 52 fast I/Os in some packages) |
| Flash Memory | 128 KB |
| SRAM | 40 KB (including 8 KB with hardware parity check) |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to 85/125 °C |
| Low-Power Modes | VBAT mode: 300 nA, Shutdown mode: 16 nA, Standby mode: 32 nA, Stop 2 mode: 0.7 µA (with RTC: 0.95 µA) |
Key Features
- Ultra-low-power consumption: Features like FlexPowerControl, VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode ensure minimal power usage.
- Arm® Cortex®-M4 CPU with FPU: Provides high performance with 100 DMIPS and supports DSP instructions.
- Adaptive real-time accelerator (ART Accelerator™): Allows 0-wait-state execution from flash memory.
- Rich analog peripherals: Includes 2x 12-bit ADCs, an operational amplifier, and an ultra-low-power comparator.
- Communication interfaces: Supports USB 2.0, I2C, USARTs, LPUART, SPIs, Quad SPI, and more.
- Security features: Includes AES 128/256-bit key encryption hardware accelerator and a true random number generator.
- Touch sensing controller: Supports up to 12 capacitive sensing channels.
- Real-time clock (RTC) and backup registers: With HW calendar, alarms, and calibration.
Applications
The STM32L422KBT6 is versatile and can be used in a variety of applications, including:
- Internet of Things (IoT): For smart home devices, wearables, and other connected devices.
- Industrial automation: For control systems, sensors, and actuators.
- Consumer electronics: For devices requiring low power consumption and high performance, such as smart meters, fitness trackers, and medical devices.
- Automotive systems: For infotainment, navigation, and other automotive applications.
Q & A
- What is the core architecture of the STM32L422KBT6?
The STM32L422KBT6 is based on the Arm® Cortex®-M4 core with a floating-point unit (FPU). - What is the maximum clock frequency of the STM32L422KBT6?
The maximum clock frequency is 80 MHz. - How much flash and SRAM memory does the STM32L422KBT6 have?
The STM32L422KBT6 has 128 KB of flash memory and 40 KB of SRAM. - What are the power supply and temperature range specifications?
The power supply range is 1.71 V to 3.6 V, and the temperature range is -40 °C to 85/125 °C. - What are some of the low-power modes available on the STM32L422KBT6?
The device features VBAT mode (300 nA), Shutdown mode (16 nA), Standby mode (32 nA), and Stop 2 mode (0.7 µA with RTC: 0.95 µA). - Does the STM32L422KBT6 support touch sensing?
Yes, it supports up to 12 capacitive sensing channels. - What security features are included in the STM32L422KBT6?
The device includes an AES 128/256-bit key encryption hardware accelerator and a true random number generator. - What communication interfaces are available on the STM32L422KBT6?
The device supports USB 2.0, I2C, USARTs, LPUART, SPIs, Quad SPI, and more. - Is the STM32L422KBT6 suitable for industrial applications?
Yes, it is suitable for industrial automation due to its robust performance and low power consumption. - What development support is available for the STM32L422KBT6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
