STM32L422RBT6 Description

The STM32L422xx devices are ultra-low-power microcontrollers built on the powerful 32-bit RISC Arm? Cortex?-M4 core that operates at up to 80 MHz.

A floating point unit (FPU) single precision is a characteristic of the Cortex-M4 core that supports all Arm? single-precision data-processing instructions and data formats. Additionally, it incorporates a memory protection unit (MPU) that improves program security together with the whole range of DSP instructions. High-speed memories (Flash memory up to 128 Kbyte, 40 Kbyte of SRAM), a Quad SPI flash memories interface (available on all packages), and a wide variety of enhanced I/Os and peripherals connected to two APB buses, two AHB buses, and a 32-bit multi-AHB bus matrix are all included in the STM32L422xx devices.

STM32L422RBT6 Features

• 1.71 V to 3.6 V power supply

• -40 °C to 85/125 °C temperature range

• 300 nA in VBAT mode: supply for RTC and 32x32-bit backup registers

• 16 nA Shutdown mode (4 wakeup pins)

• 32 nA Standby mode (4 wakeup pins)

• 245 nA Standby mode with RTC

• 0.7 μA Stop 2 mode, 0.95 μA with RTC

• 79 μA/MHz run mode (LDO Mode)

• Batch acquisition mode (BAM)

• 4 μs wakeup from Stop mode

• Brown out reset (BOR)

• Interconnect matrix

• USB 2.0 full-speed crystal less solution with LPM and BCD

• 3x I2C FM+(1 Mbit/s), SMBus/PMBus

• 3x USARTs (ISO 7816, LIN, IrDA, modem)

• 1x LPUART (Stop 2 wake-up)

• 2x SPIs (and 1x Quad SPI)

• IRTIM (Infrared interface)

STM32L422RBT6 Applications

• Power Management

• Consumer Electronics

• Portable Devices

• Industrial