Overview
The STM32L476RCT6TR is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This device operates at a frequency of up to 80 MHz and features a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and data types. It also includes a full set of DSP instructions and a memory protection unit (MPU) to enhance application security.
The STM32L476RCT6TR is part of the STM32L476xx family, which is known for its ultra-low-power consumption and advanced peripherals, making it suitable for a wide range of low-power applications.
Key Specifications
| Parameter | Specification |
|---|---|
| CPU Core | Arm® Cortex®-M4 32-bit RISC core with FPU |
| Operating Frequency | Up to 80 MHz |
| Flash Memory | Up to 1 MB |
| SRAM | Up to 128 KB |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.05 V to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to +85 °C, -40 °C to +105 °C, -40 °C to +125 °C |
| Package | LQFP 64 10x10x1.4 mm |
| ADCs | Up to three 12-bit ADCs (5 Msps) |
| DACs | Two 12-bit DAC output channels |
| Timers | Two 32-bit timers, nine 16-bit timers, two low-power 16-bit timers |
| Communication Interfaces | USB OTG 2.0 full-speed, three I2Cs, three SPIs, three USARTs, two UARTs, one Low-Power UART, two SAIs, one SDMMC, one CAN |
| Capacitive Sensing Channels | Up to 24 channels |
| RTC | Low-power RTC with HW calendar, alarms, and calibration |
Key Features
- Ultra-low-power with FlexPowerControl
- Includes ST state-of-the-art patented technology
- 1.71 V to 3.6 V power supply
- -40 °C to 85/105/125 °C temperature range
- 300 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
- 30 nA Shutdown mode (5 wakeup pins), 120 nA Standby mode (5 wakeup pins), 420 nA Standby mode with RTC
- 1.1 µA Stop 2 mode, 1.4 µA with RTC
- 100 µA/MHz run mode (LDO Mode), 39 μA/MHz run mode (@3.3 V SMPS Mode)
- Batch acquisition mode (BAM), 4 µs wakeup from Stop mode
- Brown out reset (BOR)
- Integrated LCD driver 8x40 or 4x44 with internal step-up converter
- Up to 24 capacitive sensing channels: support touchkey, linear and rotary touch sensors
- Rich analog peripherals (independent supply): three 12-bit ADCs, two 12-bit DACs, two operational amplifiers, two ultra-low-power comparators
- 20x communication interfaces: USB OTG 2.0 full-speed, three I2Cs, three SPIs, three USARTs, two UARTs, one Low-Power UART, two SAIs, one SDMMC, one CAN
- 14-channel DMA controller, true random number generator, CRC calculation unit, 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
- All packages are ECOPACK2 compliant
Applications
The STM32L476RCT6TR is suitable for a variety of applications that require low power consumption and high performance, including:
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Consumer electronics and appliances
- Automotive systems and telematics
- Internet of Things (IoT) devices and smart home applications
- Wearable devices and fitness trackers
- Energy metering and smart grid systems
Q & A
- What is the core architecture of the STM32L476RCT6TR?
The STM32L476RCT6TR is based on the Arm® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L476RCT6TR?
The maximum operating frequency is up to 80 MHz.
- How much flash memory and SRAM does the STM32L476RCT6TR have?
The device has up to 1 MB of flash memory and up to 128 KB of SRAM.
- What is the power supply range for the STM32L476RCT6TR?
The power supply range is from 1.71 V to 3.6 V (internal LDO) and from 1.05 V to 1.32 V (external SMPS).
- What are the temperature ranges for the STM32L476RCT6TR?
The temperature ranges are -40 °C to +85 °C, -40 °C to +105 °C, and -40 °C to +125 °C.
- What types of communication interfaces does the STM32L476RCT6TR support?
The device supports USB OTG 2.0 full-speed, three I2Cs, three SPIs, three USARTs, two UARTs, one Low-Power UART, two SAIs, one SDMMC, and one CAN.
- Does the STM32L476RCT6TR have any power-saving modes?
Yes, it has several power-saving modes including Shutdown mode, Standby mode, Stop 2 mode, and others.
- What kind of analog peripherals does the STM32L476RCT6TR have?
The device includes three 12-bit ADCs, two 12-bit DACs, two operational amplifiers, and two ultra-low-power comparators.
- Is the STM32L476RCT6TR suitable for capacitive sensing applications?
Yes, it supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- Does the STM32L476RCT6TR have any integrated LCD driver?
Yes, it has an integrated LCD driver 8x40 or 4x44 with an internal step-up converter.
- What development tools are available for the STM32L476RCT6TR?
Development support includes serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
