Overview
The STM32L422CBT6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L4 series. It is based on the Arm® Cortex®-M4 32-bit CPU with a floating-point unit (FPU), offering high performance and low power consumption. This MCU is designed for applications requiring high energy efficiency, such as IoT devices, wearable electronics, and industrial automation. The device incorporates ST's state-of-the-art patented technology, including FlexPowerControl, which enables a wide range of power-saving modes.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU |
| Frequency | Up to 80 MHz |
| Flash Memory | 128 KB single bank flash |
| 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 | 300 nA in VBAT mode, 16 nA Shutdown mode, 32 nA Standby mode, 245 nA Standby mode with RTC |
| ADC | 2x 12-bit ADC, 5 Msps, up to 16-bit with hardware oversampling |
| Timers | 10 timers, including 1x 16-bit advanced motor-control, 1x 32-bit, and 2x 16-bit general purpose |
| Communication Interfaces | USB 2.0 full-speed, 3x I2C, 3x USARTs, 1x LPUART, 2x SPIs, 1x Quad SPI, IRTIM |
| Package Options | LQFP48, UFQFPN48, LQFP32, UFBGA64, WLCSP36, UFQFPN32 |
Key Features
- Ultra-Low Power Consumption: Features like FlexPowerControl, batch acquisition mode (BAM), and various low power modes (e.g., Shutdown, Standby, Stop 2) ensure minimal energy usage.
- High Performance: Arm® Cortex®-M4 CPU with FPU, adaptive real-time accelerator (ART Accelerator™), and up to 100 DMIPS.
- Analog Peripherals: Includes 2x 12-bit ADCs, 1x operational amplifier with PGA, and 1x ultra-low-power comparator.
- Security: AES 128/256-bit key encryption hardware accelerator and true random number generator.
- Communication: Multiple interfaces such as USB 2.0, I2C, USARTs, SPIs, and Quad SPI.
- Development Support: Serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- Environmental Sustainability: All packages are ECOPACK2 compliant.
Applications
- Internet of Things (IoT): Ideal for IoT devices due to its low power consumption and high performance.
- Wearable Electronics: Suitable for wearable devices requiring low energy and compact design.
- Industrial Automation: Used in industrial control systems where energy efficiency and reliability are crucial.
- Medical Devices: Applicable in medical devices that require precise analog measurements and low power consumption.
- Consumer Electronics: Can be used in various consumer electronics such as smart home devices and portable electronics.
Q & A
- What is the core architecture of the STM32L422CBT6?
The core is based on the Arm® 32-bit Cortex®-M4 CPU with a floating-point unit (FPU).
- What is the power supply range for the STM32L422CBT6?
The power supply range is from 1.71 V to 3.6 V.
- What are the low power modes available in the STM32L422CBT6?
The device features several low power modes including Shutdown, Standby, Stop 2, and VBAT modes.
- What types of timers are available on the STM32L422CBT6?
The device includes 10 timers, including 1x 16-bit advanced motor-control, 1x 32-bit, and 2x 16-bit general purpose timers.
- Does the STM32L422CBT6 support any security features?
Yes, it includes an AES 128/256-bit key encryption hardware accelerator and a true random number generator.
- What communication interfaces are available on the STM32L422CBT6?
The device supports USB 2.0, I2C, USARTs, SPIs, Quad SPI, and IRTIM.
- What is the maximum frequency of the STM32L422CBT6?
The maximum frequency is up to 80 MHz.
- What is the flash and SRAM memory capacity of the STM32L422CBT6?
The device has 128 KB of flash memory and 40 KB of SRAM.
- Is the STM32L422CBT6 environmentally sustainable?
Yes, all packages are ECOPACK2 compliant.
- What development tools are supported by the STM32L422CBT6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
