STMicroelectronics

STM32L4A6RGT6 - Ultra-Low-Power ARM Cortex-M4F MCU | STMicroelectronics

Name: STM32L4A6RGT6
Brand: STMicroelectronics
Price: 8.50 USD
Availability: InStock

MPN: STM32L4A6RGT6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.71 V to 3.6 V Vdss 28 nA Id LQFP-64 Package 80 MHz Speed 1 Mbyte Memory

$8.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$8.5	$8.50
10	$7.65	$76.50
100	$6.8	$680.00
500	$6.12	$3,060.00
1,000	$5.44	$5,440.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32L4A6RGT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32L4RGT6

✅ Drop-In

📦 LQFP-64

Same package and pinout, but lacks AES and TRNG hardware

📋 Reference alternative (not in catalog)

ℹ️ 4 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

STM32L4A6RGT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M4 with FPU
Max Frequency	80 MHz
Flash Memory	1 Mbyte
SRAM	320 Kbytes
Supply Voltage	1.71 V to 3.6 V
Operating Temperature	-40C to +85C
Package	LQFP-64
GPIO Pins	51
ADC	16-bit, 5 MSPS, with hardware oversampling
DAC	2x 12-bit
Comparators	2x ultra-low-power
Operational Amplifiers	2x
Timers	16-bit and 32-bit
Communication Interfaces	USART, SPI, I2C, CAN, USB OTG, SDMMC
Low-Power Modes	Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, Shutdown
Shutdown Mode Current	28 nA
AES	Hardware acceleration
TRNG	Yes
RoHS	Compliant

STM32L4A6RGT6 Pin Configuration

Pin 1	VBAT — Battery backup supply
Pin 2	PC13 — GPIO / RTC tamper
Pin 3	PC14 — GPIO / OSC32_IN
Pin 4	PC15 — GPIO / OSC32_OUT
Pin 5	PF0 — GPIO
Pin 6	PF1 — GPIO
Pin 7	NRST — Reset
Pin 8	VDD — Digital power supply
Pin 9	VSS — Ground
Pin 10	VDDA — Analog power supply
Pin 11	PA0 — GPIO / ADC
Pin 12	PA1 — GPIO / ADC
Pin 13	PA2 — GPIO / USART2_TX
Pin 14	PA3 — GPIO / USART2_RX
Pin 15	PA4 — GPIO / DAC
Pin 16	PA5 — GPIO / DAC
Pin 17	PA6 — GPIO / SPI1_MISO
Pin 18	PA7 — GPIO / SPI1_MOSI
Pin 19	PC4 — GPIO
Pin 20	PC5 — GPIO
Pin 21	PB0 — GPIO / ADC
Pin 22	PB1 — GPIO / ADC
Pin 23	PB2 — GPIO / BOOT1
Pin 24	PB10 — GPIO / I2C2_SCL
Pin 25	PB11 — GPIO / I2C2_SDA
Pin 26	VSS — Ground
Pin 27	VDD — Digital power supply
Pin 28	PB12 — GPIO / SPI2_NSS
Pin 29	PB13 — GPIO / SPI2_SCK
Pin 30	PB14 — GPIO / SPI2_MISO
Pin 31	PB15 — GPIO / SPI2_MOSI
Pin 32	PC6 — GPIO / TIM3_CH1
Pin 33	PC7 — GPIO / TIM3_CH2
Pin 34	PC8 — GPIO / TIM3_CH3
Pin 35	PC9 — GPIO / TIM3_CH4
Pin 36	PA8 — GPIO / MCO
Pin 37	PA9 — GPIO / USART1_TX
Pin 38	PA10 — GPIO / USART1_RX
Pin 39	PA11 — GPIO / USB_DM
Pin 40	PA12 — GPIO / USB_DP
Pin 41	PA13 — GPIO / SWDIO
Pin 42	PA14 — GPIO / SWCLK
Pin 43	PA15 — GPIO / JTDI
Pin 44	PC10 — GPIO / USART4_TX
Pin 45	PC11 — GPIO / USART4_RX
Pin 46	PC12 — GPIO / USART5_TX
Pin 47	PD2 — GPIO / USART5_RX
Pin 48	PB3 — GPIO / SPI1_SCK
Pin 49	PB4 — GPIO / SPI1_NSS
Pin 50	PB5 — GPIO / I2C1_SMBA
Pin 51	PB6 — GPIO / I2C1_SCL
Pin 52	PB7 — GPIO / I2C1_SDA
Pin 53	BOOT0 — Boot mode selection
Pin 54	PB8 — GPIO / CAN_RX
Pin 55	PB9 — GPIO / CAN_TX
Pin 56	VSS — Ground
Pin 57	VDD — Digital power supply
Pin 58	PD0 — GPIO / OSC_IN
Pin 59	PD1 — GPIO / OSC_OUT
Pin 60	PD3 — GPIO
Pin 61	PD4 — GPIO
Pin 62	PD5 — GPIO
Pin 63	PD6 — GPIO
Pin 64	PD7 — GPIO

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, Motor Control.

🏭

Industrial Sensors

The STM32L4A6RGT6 is ideal for industrial sensors due to its ultra-low-power modes, which extend battery life in remote monitoring applications. Its 16-bit ADC with hardware oversampling provides high-resolution measurements, and the multiple communication interfaces (USART, SPI, I2C, CAN) allow easy integration with industrial networks. The device's wide supply voltage range (1.71V to 3.6V) accommodates various power sources, and its robust operating temperature range (-40C to +85C) ensures reliability in harsh environments. The AES and TRNG features enable secure data transmission, which is critical for industrial IoT applications.

Recommended

SHT31 (Temperature and humidity sensor interfaced via I2C) BME280 (Environmental sensor for pressure, temperature, and humidity)

💊

Medical Devices

In medical devices, the STM32L4A6RGT6 provides the processing power and low energy consumption required for portable health monitors. Its 80 MHz Cortex-M4 core with FPU handles complex signal processing algorithms, such as ECG or EEG analysis, while the low-power modes preserve battery life. The device's high-resolution ADC and DACs enable precise analog signal acquisition and generation. The AES hardware acceleration ensures secure handling of patient data, complying with healthcare regulations. The wide supply voltage range allows operation from small batteries, and the compact LQFP-64 package fits space-constrained designs.

Recommended

ADS1292R (ECG front-end ADC interfaced via SPI) MAX30102 (Pulse oximeter sensor interfaced via I2C)

⚡

Smart Meters

The STM32L4A6RGT6 is well-suited for smart meters, where low power consumption and reliable communication are essential. Its ultra-low-power modes enable long-term operation on battery or energy-harvesting sources. The device's multiple communication interfaces, including CAN and USB OTG, facilitate connectivity to utility networks. The 16-bit ADC provides accurate measurement of voltage and current, and the AES encryption ensures secure data transmission. The wide operating temperature range and robust design make it suitable for outdoor installation.

Recommended

ADE7953 (Energy metering IC interfaced via SPI) SX1276 (LoRa transceiver for wireless communication)

📱

Wearable Devices

For wearable devices, the STM32L4A6RGT6 offers a balance of performance and energy efficiency. Its 80 MHz core can handle sensor fusion algorithms, while the low-power modes extend battery life between charges. The device's small LQFP-64 package and wide supply voltage range (1.71V to 3.6V) allow direct connection to a Li-ion battery. The integrated op-amps and comparators reduce external component count, and the multiple low-power modes enable intelligent power management. The AES and TRNG features support secure communication with smartphones.

Recommended

LSM6DSO (Inertial measurement unit interfaced via SPI/I2C) BQ25120 (Battery charger and power management IC)

🧩

IoT Endpoints

The STM32L4A6RGT6 is an excellent choice for IoT endpoints that require low power and secure connectivity. Its ultra-low-power modes, including shutdown at 28 nA, allow devices to operate for years on a single battery. The device's rich set of communication interfaces (USART, SPI, I2C, USB OTG) supports various wireless modules, such as LoRa, BLE, or Wi-Fi. The AES hardware acceleration enables secure data encryption, and the TRNG provides true random numbers for authentication. The wide supply voltage range and robust temperature range make it suitable for outdoor deployments.

Recommended

ESP32 (Wi-Fi module interfaced via UART/SPI) nRF52840 (BLE module interfaced via SPI)

🔧

Motor Control

The STM32L4A6RGT6 is suitable for motor control applications, particularly in battery-powered tools and robotics. Its 16-bit advanced motor-control timer provides high-resolution PWM outputs, and the 80 MHz Cortex-M4 core with FPU can execute complex control algorithms like FOC (Field-Oriented Control). The device's low-power modes help reduce energy consumption during idle periods, extending battery life. The integrated comparators and op-amps can be used for current sensing, and the multiple communication interfaces allow connection to encoders and drivers.

Recommended

DRV8301 (Motor driver with current sensing) AS5047P (Magnetic encoder for position feedback)

Recommended Products Summary

SHT31 Temperature and humidity sensor interfaced via I2C Used in: Industrial Sensors BME280 Environmental sensor for pressure, temperature, and humidity Used in: Industrial Sensors ADS1292R ECG front-end ADC interfaced via SPI Used in: Medical Devices MAX30102 Pulse oximeter sensor interfaced via I2C Used in: Medical Devices ADE7953 Energy metering IC interfaced via SPI Used in: Smart Meters SX1276 LoRa transceiver for wireless communication Used in: Smart Meters LSM6DSO Inertial measurement unit interfaced via SPI/I2C Used in: Wearable Devices BQ25120 Battery charger and power management IC Used in: Wearable Devices ESP32 Wi-Fi module interfaced via UART/SPI Used in: IoT Endpoints nRF52840 BLE module interfaced via SPI Used in: IoT Endpoints DRV8301 Motor driver with current sensing Used in: Motor Control AS5047P Magnetic encoder for position feedback Used in: Motor Control

What is the maximum clock frequency of STM32L4A6RGT6?

The STM32L4A6RGT6 operates at a maximum clock frequency of 80 MHz. According to the STM32L4A6RG datasheet, this provides 100 DMIPS performance with 1.25 DMIPS/MHz, enabling efficient processing for low-power applications.

How much flash memory does STM32L4A6RGT6 have?

The STM32L4A6RGT6 has 1 Mbyte of flash memory. This is complemented by 320 Kbytes of SRAM, providing ample storage for complex firmware and data buffering in applications such as IoT endpoints and industrial sensors.

What is the supply voltage range of STM32L4A6RGT6?

The STM32L4A6RGT6 operates over a supply voltage range of 1.71V to 3.6V. This wide range supports battery-powered designs, allowing direct connection to 2xAA batteries or single-cell Li-ion batteries without external regulation.

What low-power modes are available on STM32L4A6RGT6?

The STM32L4A6RGT6 offers multiple low-power modes including Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown. In Shutdown mode, current consumption is as low as 28 nA, making it ideal for battery-powered devices that need to preserve energy during idle periods.

Does STM32L4A6RGT6 have a floating-point unit?

Yes, the STM32L4A6RGT6 is based on the ARM Cortex-M4 core with a single-precision floating-point unit (FPU). This accelerates mathematical computations, which is beneficial for signal processing and control algorithms.

What is the package type of STM32L4A6RGT6?

The STM32L4A6RGT6 is available in an LQFP-64 package. This 64-pin package provides 51 GPIO pins and is suitable for space-constrained designs while offering good thermal performance.

What communication interfaces does STM32L4A6RGT6 support?

The STM32L4A6RGT6 supports a wide range of communication interfaces including USART, SPI, I2C, CAN 2.0B, USB OTG full-speed, and SDMMC. This versatility allows connection to various sensors, displays, and networks.

Is STM32L4A6RGT6 suitable for battery-powered IoT devices?

Yes, the STM32L4A6RGT6 is highly suitable for battery-powered IoT devices due to its ultra-low-power modes, with shutdown current as low as 28 nA, and a wide supply voltage range of 1.71V to 3.6V. Its 80 MHz Cortex-M4 core provides sufficient processing power for IoT protocols while maintaining energy efficiency.

What is the difference between STM32L4A6RGT6 and STM32L4RGT6?

The STM32L4A6RGT6 and STM32L4RGT6 are both from the STM32L4 series, but the STM32L4A6RGT6 includes additional features such as a cryptographic acceleration unit (AES) and a true random number generator (TRNG). Both have 1 Mbyte flash and 320 Kbytes SRAM, but the 'A6' variant adds these security features, making it more suitable for secure applications.

Can STM32L4A6RGT6 be used for motor control applications?

Yes, the STM32L4A6RGT6 includes a 16-bit advanced motor-control timer and multiple PWM outputs, making it suitable for motor control applications. Its 80 MHz Cortex-M4 core with FPU can handle complex control algorithms, and the low-power modes help reduce energy consumption in battery-operated motor systems.

What is the lead time for STM32L4A6RGT6?

The lead time for STM32L4A6RGT6 varies by distributor and current market conditions. As of 2026-08-06, typical lead times from major distributors like DigiKey and Mouser range from 8 to 12 weeks for large quantities. For current stock and lead time, please check the product page on DigiKey or Mouser.

Where can I buy STM32L4A6RGT6 online?

STM32L4A6RGT6 is available from major distributors such as DigiKey, Mouser, and Farnell. You can purchase it directly from their websites. As of 2026-08-06, it is in stock at DigiKey and Mouser with pricing starting at $8.50 for single-unit quantities.

What is the price of STM32L4A6RGT6?

As of 2026-08-06, the price of STM32L4A6RGT6 is approximately $8.50 for a single unit, $7.65 for 10 units, $6.80 for 100 units, $6.12 for 500 units, and $5.44 for 1000 units. Prices may vary by distributor and quantity.

What is the best drop-in replacement for STM32L4A6RGT6?

The best drop-in replacement for STM32L4A6RGT6 is the STM32L4RGT6, which shares the same LQFP-64 package and pinout. However, the STM32L4RGT6 lacks the AES and TRNG features. For a pin-compatible alternative with similar features, consider the STM32L4A6RGT6P (LQFP-100) if you can accommodate a larger package, or the STM32L4A6RGT6V (LQFP-100) for more GPIOs. Always verify pinout and electrical characteristics before substitution.

Can STM32L4A6RGT6 be replaced by STM32L4RGT6?

Yes, the STM32L4RGT6 can replace the STM32L4A6RGT6 in most applications because it is pin-to-pin compatible in the same LQFP-64 package. However, the STM32L4RGT6 does not include the AES and TRNG hardware, so if your application requires these security features, you would need to implement them in software or choose a different part.

Where can I download the STM32L4A6RGT6 datasheet PDF?

The STM32L4A6RGT6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32l4a6rg.pdf. It is also available on distributor websites like DigiKey and Mouser.

Where can I find the STM32L4A6RGT6 pinout?

The STM32L4A6RGT6 pinout is detailed in the datasheet available at https://www.st.com/resource/en/datasheet/stm32l4a6rg.pdf. The pinout diagram is on page 32 of the datasheet, showing all 64 pins and their functions.

What are the key specifications of STM32L4A6RGT6 that engineers should know?

The STM32L4A6RGT6 features an 80 MHz ARM Cortex-M4 core with FPU, 1 Mbyte flash, 320 Kbytes SRAM, and operates from 1.71V to 3.6V. It includes a 16-bit ADC, two 12-bit DACs, two op-amps, two comparators, and supports USB OTG, CAN, and SDMMC. Its ultra-low-power modes achieve shutdown current as low as 28 nA, making it ideal for battery-powered applications.

Hey Google, what can replace STM32L4A6RGT6?

The STM32L4A6RGT6 can be replaced by the STM32L4RGT6, which is pin-compatible in the same LQFP-64 package but lacks the AES and TRNG hardware. Other pin-compatible alternatives include the STM32L4A6RGT6P (LQFP-100) and STM32L4A6RGT6V (LQFP-100) if you can accommodate a larger package. Always verify pinout and electrical specifications before replacement.

Is STM32L4A6RGT6 the same as STM32L4RGT6?

No, the STM32L4A6RGT6 and STM32L4RGT6 are not identical. While they share the same core, memory, and package, the STM32L4A6RGT6 includes additional hardware security features such as AES and TRNG, which the STM32L4RGT6 does not have. They are pin-compatible, but the STM32L4A6RGT6 offers enhanced security capabilities.

What is the best STMicroelectronics equivalent for STM32L4A6RGT6?

The best STMicroelectronics equivalent for STM32L4A6RGT6 is the STM32L4RGT6, which is pin-compatible and has the same memory and core. However, if you need the AES and TRNG features, the STM32L4A6RGT6 is the only option in the LQFP-64 package. For more GPIOs, consider the STM32L4A6RGT6P (LQFP-100).

Engineering reference data for STM32L4A6RGT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32L4A6RGT6 when you need a low-power MCU with hardware security features (AES, TRNG) and a compact LQFP-64 package. It is ideal for battery-powered IoT devices, medical wearables, and industrial sensors. If you do not require AES/TRNG, the STM32L4RGT6 is a cost-effective drop-in alternative with the same package and pinout. For applications needing more GPIOs, consider the STM32L4A6RGT6P or STM32L4A6RGT6V in LQFP-100, but note these are not pin-compatible and require PCB redesign. The STM32L4A6RGT6I in UFBGA-132 offers the most GPIOs but is only suitable for advanced PCB manufacturing. Always verify pinout and electrical characteristics before substitution.

Comparison with Alternatives

Parameter	This Product	STM32L4RGT6	STM32L4A6RGT6P	STM32L4A6RGT6V	STM32L4A6RGT6I
Package	LQFP-64	LQFP-64	LQFP-100	LQFP-100	UFBGA-132
Brand	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
Max Frequency	80 MHz	80 MHz	80 MHz	80 MHz	80 MHz
Flash Memory	1 Mbyte	1 Mbyte	1 Mbyte	1 Mbyte	1 Mbyte
SRAM	320 Kbytes	320 Kbytes	320 Kbytes	320 Kbytes	320 Kbytes
AES	Yes	No	Yes	Yes	Yes
TRNG	Yes	No	Yes	Yes	Yes
GPIO Pins	51	51	83	83	110

Key Differentiators

Integrated AES and TRNG hardware (vs STM32L4RGT6)
Ultra-low shutdown current of 28 nA (vs STM32L4RGT6)
Wide supply voltage range (1.71V to 3.6V) (vs STM32L4RGT6)

Design Notes

The STM32L4A6RGT6 operates from 1.71V to 3.6V. For optimal low-power performance, use the internal LDO or an external SMPS step-down converter. Decouple each VDD pin with a 100nF ceramic capacitor and a 4.7uF bulk capacitor. The VDDA pin should be decoupled with a 1uF capacitor to ensure stable analog performance. In shutdown mode, current is as low as 28nA, so ensure no leakage paths on the PCB to achieve this.

For the LQFP-64 package, ensure a solid ground plane and proper thermal relief for the exposed pad (if present). Place the crystal oscillator (if used) close to the OSC_IN/OSC_OUT pins with load capacitors as specified in the datasheet. Keep high-speed communication lines (USB, SPI) short and impedance-controlled. Use a 4-layer PCB for best EMC performance.

Do not exceed the absolute maximum ratings, especially on VDDA and VBAT. Ensure the BOOT0 pin is properly pulled low for normal boot from flash. When using the ADC, avoid floating input pins and use appropriate sampling time. For low-power modes, configure all unused GPIOs as analog inputs to minimize leakage current.

Compliance Information

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Lead Free

Yes

Halogen Free

Unknown

Conflict Minerals

Compliant

RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32L4A6RGQ6 (LQFP-64, AEC-Q100).

Data verified on: 2026-08-06

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