Product Overview
The STM32L452RCT6 is an ultra-low-power microcontroller featuring an ARM Cortex-M4 core with FPU and DSP instructions, operating at up to 80 MHz. With 256 KB of Flash memory and 160 KB of SRAM in an LQFP64 package, it delivers 100 DMIPS performance while maintaining exceptional energy efficiency through ST’s FlexPowerControl technology. The device supports both internal LDO and external SMPS power modes, achieving as low as 36 uA/MHz in SMPS mode. It integrates a comprehensive set of analog peripherals, 21 capacitive touch channels, and 17 communication interfaces including USB FS, CAN, and SAI audio interface.
Key Specifications
| Core | ARM Cortex-M4 32-bit with FPU |
| Maximum Frequency | 80 MHz |
| Flash Memory | 256 KB |
| SRAM | 160 KB (32 KB with parity) |
| Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40°C to +85°C |
| GPIO Count | 52 (most 5V-tolerant) |
| ADC | 12-bit, 5 Msps, up to 16-bit with oversampling |
| DAC | 1x 12-bit |
| Package | LQFP-64 (10×10 mm) |
Features
- FlexPowerControl: 22 nA Shutdown, 106 nA Standby, 2.05 uA Stop 2
- 36 uA/MHz SMPS mode, 84 uA/MHz LDO mode
- ART Accelerator for 0-wait-state Flash execution
- 12-bit ADC 5 Msps with hardware oversampling
- 1x 12-bit DAC, 1x op-amp with PGA, 2x comparators
- 21 capacitive sensing channels (touchkey, linear, rotary)
- 17x communication interfaces: USB FS crystal-less, CAN, SAI, 4x I2C, 3x SPI, 3x USART, LPUART, SDMMC
- 12x timers including motor-control timer, low-power timers
- True random number generator, CRC unit, 96-bit unique ID
- Memory protection: readout protection, write protection, Firewall
Applications
- Wearable devices and health/fitness trackers
- Smart meters and energy management systems
- Industrial sensor nodes and automation
- Portable medical and healthcare equipment
- Audio processing and voice user interfaces
- Motor control and power management
- USB and CAN connected devices
- Low-power IoT and edge computing