STM32L4A6RGT6 - Ultra-Low-Power ARM Cortex-M4F MCU | STMicroelectronics
MPN: STM32L4A6RGT6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.2727 | $12.27 |
| 10 | $8.8636 | $88.64 |
| 100 | $7.8409 | $784.09 |
| 500 | $7.5 | $3,750.00 |
| 960 | $7.1591 | $6,872.74 |
Drop-in alternatives for STM32L4A6RGT6 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM32L4A6RGT6TR
π Reference alternative (not in catalog)
STM32L4A6RGT6P
π Reference alternative (not in catalog)
STM32L4A6RGT7
π Reference alternative (not in catalog)
STM32L496RGT6
π Reference alternative (not in catalog)
STM32L496RGT6P
π Reference alternative (not in catalog)
GD32F450RGT6
π Reference alternative (not in catalog)
STM32L4A6RGT6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4 with FPU |
| Maximum Frequency | 80 MHz |
| Flash Memory | 1 MB (1M x 8) |
| SRAM | 320 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C |
| DAC | 2 x 12-bit |
| Operational Amplifiers | 2 |
| Comparators | 2 ultra-low-power |
| ADC | 16-bit with hardware oversampling |
| CAN | 2 x CAN 2.0B |
| USB | USB OTG full-speed |
| SDMMC | 1 |
| USART | Multiple |
| SPI | Multiple |
| I2C | Multiple |
| Low-Power Modes | Shutdown mode with 28 nA current |
| Process Technology | 40 nm |
| RoHS Status | Compliant |
STM32L4A6RGT6 Pin Configuration
| Pin 1 | VBAT β Battery backup supply |
| Pin 2 | PC14 β GPIO / OSC32_IN |
| Pin 3 | PC15 β GPIO / OSC32_OUT |
| Pin 4 | PF0 β GPIO / OSC_IN |
| Pin 5 | PF1 β GPIO / OSC_OUT |
| Pin 6 | NRST β Reset (active low) |
| Pin 7 | PC0 β GPIO / ADC_IN10 |
| Pin 8 | PC1 β GPIO / ADC_IN11 |
| Pin 9 | PC2 β GPIO / ADC_IN12 |
| Pin 10 | PC3 β GPIO / ADC_IN13 |
| Pin 11 | VDD β Digital power supply |
| Pin 12 | VSS β Ground |
| Pin 13 | PC4 β GPIO / ADC_IN14 |
| Pin 14 | PC5 β GPIO / ADC_IN15 |
| Pin 15 | PB0 β GPIO / ADC_IN8 |
| Pin 16 | PB1 β GPIO / ADC_IN9 |
| Pin 17 | PB2 β GPIO / BOOT1 |
| Pin 18 | PB10 β GPIO / I2C2_SCL |
| Pin 19 | PB11 β GPIO / I2C2_SDA |
| Pin 20 | VSS β Ground |
| Pin 21 | VDD β Digital power supply |
| Pin 22 | PB12 β GPIO / SPI2_NSS |
| Pin 23 | PB13 β GPIO / SPI2_SCK |
| Pin 24 | PB14 β GPIO / SPI2_MISO |
| Pin 25 | PB15 β GPIO / SPI2_MOSI |
| Pin 26 | PC6 β GPIO / TIM3_CH1 |
| Pin 27 | PC7 β GPIO / TIM3_CH2 |
| Pin 28 | PC8 β GPIO / TIM3_CH3 |
| Pin 29 | PC9 β GPIO / TIM3_CH4 |
| Pin 30 | PA0 β GPIO / ADC_IN0 / WKUP1 |
| Pin 31 | PA1 β GPIO / ADC_IN1 |
| Pin 32 | PA2 β GPIO / ADC_IN2 / USART2_TX |
| Pin 33 | PA3 β GPIO / ADC_IN3 / USART2_RX |
| Pin 34 | VSS β Ground |
| Pin 35 | VDD β Digital power supply |
| Pin 36 | PA4 β GPIO / DAC_OUT1 |
| Pin 37 | PA5 β GPIO / DAC_OUT2 |
| Pin 38 | PA6 β GPIO / ADC_IN4 |
| Pin 39 | PA7 β GPIO / ADC_IN5 |
| Pin 40 | PC10 β GPIO / USART3_TX |
| Pin 41 | PC11 β GPIO / USART3_RX |
| Pin 42 | PC12 β GPIO / USART3_CK |
| Pin 43 | PD2 β GPIO / SDMMC1_CMD |
| Pin 44 | PB3 β GPIO / SPI1_SCK |
| Pin 45 | PB4 β GPIO / SPI1_MISO |
| Pin 46 | PB5 β GPIO / SPI1_MOSI |
| Pin 47 | PB6 β GPIO / I2C1_SCL |
| Pin 48 | PB7 β GPIO / I2C1_SDA |
| Pin 49 | BOOT0 β Boot mode selection |
| Pin 50 | PB8 β GPIO / I2C1_SCL / CAN1_RX |
| Pin 51 | PB9 β GPIO / I2C1_SDA / CAN1_TX |
| Pin 52 | VSS β Ground |
| Pin 53 | VDD β Digital power supply |
| Pin 54 | PA8 β GPIO / MCO1 |
| Pin 55 | PA9 β GPIO / USART1_TX |
| Pin 56 | PA10 β GPIO / USART1_RX |
| Pin 57 | PA11 β GPIO / USB_DM |
| Pin 58 | PA12 β GPIO / USB_DP |
| Pin 59 | PA13 β GPIO / SWDIO |
| Pin 60 | PA14 β GPIO / SWCLK |
| Pin 61 | PA15 β GPIO / JTDI |
| Pin 62 | PC13 β GPIO / RTC_AF1 |
| Pin 63 | PC14 β GPIO / OSC32_IN |
| Pin 64 | PC15 β GPIO / OSC32_OUT |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
STM32L4A6RGT6 is suitable for 6 applications: Industrial Sensors, Medical Devices, Smart Meters, Wearable Devices, IoT Endpoints, Smart Home Devices.
Industrial Sensors
The STM32L4A6RGT6 is ideal for industrial sensors due to its ultra-low-power operation and rich analog peripherals. Its 16-bit ADC with hardware oversampling enables precise measurement of sensor signals, while the multiple low-power modes allow battery-powered operation for extended periods. The device's 80 MHz Cortex-M4 core provides sufficient processing power for real-time data analysis and communication protocols like CAN and RS-485. In a typical industrial sensor node, the MCU reads analog sensor data, processes it locally, and transmits results over a wired or wireless interface. The wide supply voltage range (1.71V to 3.6V) accommodates various power sources, and the robust operating temperature range (-40C to +85C) ensures reliability in harsh environments. Designers can leverage the two operational amplifiers for signal conditioning, reducing external component count. The cryptographic acceleration unit (AES) can secure data transmission, and the true random number generator (TRNG) supports secure key generation. Overall, the STM32L4A6RGT6 balances performance, power efficiency, and integration, making it a top choice for industrial sensing applications.
Recommended
Medical Devices
The STM32L4A6RGT6 is well-suited for medical devices such as portable health monitors and diagnostic equipment. Its ultra-low-power consumption extends battery life in wearable devices, while the 80 MHz Cortex-M4 core with FPU handles complex signal processing algorithms, such as ECG or EEG analysis. The integrated 16-bit ADC and two operational amplifiers enable precise biosignal acquisition with minimal external components. The device's multiple communication interfaces (USB, UART, SPI, I2C) facilitate data transfer to external hosts or cloud services. The cryptographic acceleration unit (AES) ensures secure transmission of patient data, complying with healthcare regulations. The wide supply voltage range and low-power modes allow operation from small coin-cell batteries. In a typical pulse oximeter, the MCU reads photoplethysmography signals, computes oxygen saturation, and displays results on an LCD, all while consuming minimal power. The STM32L4A6RGT6's combination of performance, integration, and energy efficiency makes it a reliable choice for medical applications.
Recommended
Smart Meters
The STM32L4A6RGT6 is an excellent choice for smart meters, including electricity, water, and gas meters. Its ultra-low-power modes enable battery-powered operation for years, while the 80 MHz Cortex-M4 core handles metrology calculations and communication protocols. The device's multiple UARTs and SPI interfaces connect to metrology ICs and communication modules (e.g., Wi-Fi, LoRa, or PLC). The 16-bit ADC can be used for voltage and current sensing in electricity meters, and the two operational amplifiers condition sensor signals. The cryptographic acceleration unit (AES) secures communication with the utility provider, and the true random number generator (TRNG) supports secure key management. The wide supply voltage range (1.71V to 3.6V) allows operation from a single lithium battery. In a typical smart meter, the MCU periodically reads energy consumption, stores data in flash, and transmits it to the grid via a communication module. The STM32L4A6RGT6's low power consumption and rich peripherals make it a cost-effective solution for smart metering.
Recommended
Wearable Devices
The STM32L4A6RGT6 is perfect for wearable devices like smartwatches, fitness trackers, and health monitors. Its ultra-low-power consumption, with shutdown mode at 28 nA, extends battery life significantly. The 80 MHz Cortex-M4 core with FPU handles sensor fusion algorithms and user interface rendering. The device's rich analog peripherals (ADC, DAC, op-amps) interface with various sensors, including accelerometers, gyroscopes, and heart rate monitors. The Chrom-ART Accelerator enhances graphics performance for displays, while the multiple communication interfaces (USB, UART, SPI, I2C) connect to external devices. The cryptographic acceleration unit (AES) secures personal data, and the true random number generator (TRNG) supports secure pairing. In a typical fitness tracker, the MCU reads motion and heart rate data, processes steps and calories, and displays information on an OLED screen. The STM32L4A6RGT6's combination of low power, performance, and integration makes it a leading choice for wearables.
Recommended
IoT Endpoints
The STM32L4A6RGT6 is an ideal MCU for IoT endpoints, providing a balance of processing power, connectivity, and energy efficiency. Its 80 MHz Cortex-M4 core handles MQTT, CoAP, and other IoT protocols, while the multiple UART, SPI, and I2C interfaces connect to sensors, actuators, and communication modules (e.g., Wi-Fi, BLE, LoRa). The ultra-low-power modes enable battery-powered operation for months or years, depending on duty cycle. The cryptographic acceleration unit (AES) secures data transmission, and the true random number generator (TRNG) supports secure authentication. The device's rich analog peripherals allow direct sensor interfacing without external ADCs. In a typical IoT endpoint, the MCU periodically wakes from sleep, reads sensor data, transmits it to a gateway, and returns to sleep. The STM32L4A6RGT6's low power consumption and robust feature set make it a popular choice for IoT applications.
Recommended
Smart Home Devices
The STM32L4A6RGT6 is well-suited for smart home devices such as smart thermostats, lighting controllers, and security systems. Its ultra-low-power operation allows battery-powered devices to last for years, while the 80 MHz Cortex-M4 core handles user interfaces and communication protocols. The device's multiple communication interfaces (USB, UART, SPI, I2C) connect to Wi-Fi, Zigbee, or Z-Wave modules. The rich analog peripherals enable direct connection to temperature sensors, light sensors, and motion detectors. The cryptographic acceleration unit (AES) secures communication with the home network, and the true random number generator (TRNG) supports secure key generation. In a typical smart thermostat, the MCU reads temperature and humidity, controls the HVAC system, and communicates with a mobile app via Wi-Fi. The STM32L4A6RGT6's combination of low power, performance, and integration makes it a reliable choice for smart home applications.
Recommended
Recommended Products Summary
Engineering reference data for STM32L4A6RGT6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32L4A6RGT6TR | STM32L4A6RGT6P | STM32L4A6RGT7 | STM32L496RGT6 | STM32L496RGT6P |
|---|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU |
| Maximum Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 1 MB | 1 MB | 1 MB | 1 MB | 1 MB | 1 MB |
| SRAM | 320 KB | 320 KB | 320 KB | 320 KB | 320 KB | 320 KB |
| AES Encryption | Yes | Yes | Yes | Yes | No | No |
| TRNG | Yes | Yes | Yes | Yes | No | No |
| Supply Voltage Range | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V |
Key Differentiators
- Integrated AES and TRNG (vs STM32L496RGT6)
- Ultra-low-power shutdown mode (vs GD32F450RGT6)
- Rich analog peripherals (vs STM32L496RGT6)
Design Notes
The STM32L4A6RGT6 operates from 1.71V to 3.6V. Use a low-dropout regulator (LDO) or a DC-DC converter to provide a stable supply. Decouple each VDD pin with a 100nF ceramic capacitor and a 4.7uF bulk capacitor. For ultra-low-power applications, consider using the internal LDO or an external SMPS step-down converter to improve efficiency. Ensure the power supply can handle peak currents during flash programming or high-frequency operation.
Place decoupling capacitors as close as possible to the VDD and VSS pins to minimize inductance. Use a solid ground plane and avoid splitting it under the MCU. For the crystal oscillator pins (OSC_IN/OSC_OUT), keep traces short and shielded to prevent noise coupling. Follow the layout guidelines in the STM32L4A6RG datasheet for optimal performance.
Ensure the BOOT0 pin is correctly configured to select the desired boot mode. For debugging, connect SWDIO and SWCLK pins to the debugger. Do not leave unused pins floating; configure them as analog inputs or outputs to reduce leakage current. When using the ADC, avoid exceeding the maximum input voltage (VREF+). Also, note that the STM32L4A6RGT6 has a 40nm process, so ESD protection is critical during handling.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified. Lead-free per datasheet.
