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STMicroelectronics STM32L4A6AGI6TR
- Part No.:
- STM32L4A6AGI6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 169-UFBGA
- Datasheet:
-
STM32L4A6AGI6TR.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 169UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,974
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Product details
Overview
STM32L4A6AGI6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 1 MB flash, 320 KB SRAM, USB OTG FS, hardware AES+HASH encryption, and integrated SMPS support. It operates from 1.71–3.6 V across –40 °C to 125 °C, delivers 100 DMIPS at 80 MHz, and targets battery-powered industrial sensors, portable medical devices, and secure IoT edge nodes.
For engineers reviewing the STM32L4A6AGI6TR datasheet, STM32L4A6AGI6TR pinout, STM32L4A6AGI6TR application, or STM32L4A6AGI6TR equivalent, key selection criteria include its 2.86 µA Stop 2 mode with RTC, 37 µA/MHz SMPS-enabled run efficiency, dual-bank flash for seamless firmware updates, and hardware-accelerated cryptographic primitives for secure boot and OTA updates.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, and features a multi-layer AHB bus matrix for concurrent peripheral access without contention. Its FlexPowerControl architecture supports seven low-power modes-including Shutdown (25 nA), Standby with RTC (426 nA), and Stop 2 with 5 µs wakeup-managed via dedicated power control registers and voltage scaling.
Peripherals are partitioned across independent power domains: analog blocks (ADCs, DACs, OPAMPs, COMP) support separate 1.08–3.6 V supply rails; I/Os are mostly 5 V-tolerant; and the external memory interface supports SRAM, PSRAM, NOR, and NAND via FSMC. Clocking includes three PLLs (system, USB, audio), internal 48 MHz RC with CRS recovery, and LSE-trimmed multispeed oscillator (±0.25%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, 80 MHz max frequency, 100 DMIPS performance |
| Memory | 1 MB dual-bank flash (read-while-write, ROP protection), 320 KB SRAM (64 KB with parity) |
| Power Efficiency | 37 µA/MHz in SMPS-run mode; 2.86 µA Stop 2 with RTC enabled; 25 nA Shutdown mode |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps, 16-bit oversampling), 2× 12-bit DACs, 2× OPAMPs with PGA, 2× comparators |
| Security & Crypto | Dedicated AES-128/256 and SHA-256 hardware accelerators, true random number generator (RNG), 96-bit unique ID |
| Connectivity | USB OTG FS (LPM/BCD), 2× CAN 2.0B, 5× USART/LPUART, 4× I²C FM+, 3× SPI + Quad-SPI, 2× SAI, SDMMC |
| Package | UFBGA132 (7 × 7 mm, 0.4 mm pitch), 132-pin ball grid array with 115 user I/Os |
Pinout & Package
STM32L4A6AGI6TR is housed in a UFBGA132 package (7 × 7 mm, 0.4 mm ball pitch), optimized for compact, high-density PCB layouts in space-constrained applications. The package supports 115 general-purpose I/Os, most 5 V-tolerant, with up to 14 I/Os configurable for independent 1.08–3.6 V supply domains.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O power supplies | Independent rails enable mixed-signal isolation and flexible power sequencing; VDDIO2 supports down to 1.08 V for low-voltage peripherals |
| VSS, VSSA, VSSIO2 | Ground references | Separate analog/digital grounds reduce noise coupling; VSSIO2 ties to low-voltage I/O domain |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | 115 total user I/Os; majority 5 V-tolerant; up to 24 support capacitive touch sensing (TSC) |
| PC13–PC15 | RTC-related functions | PC13 = RTC_OUT/ALARM; PC14/PC15 = 32.768 kHz LSE crystal connections for calendar-accurate timekeeping |
| PA11/PA12 | USB OTG FS D+/D− | Dedicated full-speed USB transceiver pins with internal pull-ups; support LPM and battery charging detection (BCD) |
| PB8/PB9 | I²C1_SCL/I²C1_SDA | Fast-mode Plus (1 Mbit/s) I²C interface with SMBus/PMBus support; includes analog filters for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 25 nA Shutdown and 426 nA Standby-with-RTC via hardware-managed power gating and voltage scaling |
| ART Accelerator™ | Eliminates flash wait states at 80 MHz, reducing code execution latency and dynamic power consumption |
| Dual-bank flash memory | Supports atomic firmware updates and fail-safe booting by allowing one bank to execute while the other is reprogrammed |
| Hardware crypto engines | AES-128/256 and SHA-256 accelerators offload CPU during TLS handshake, secure boot, and encrypted storage operations |
| Chrom-ART Accelerator (DMA2D) | Offloads 2D graphics rendering (copy, fill, blend) from CPU, reducing active time in GUI-driven HMI applications |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity/pressure sensor node with LoRaWAN backhaul and local data logging. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition (via 3× ADCs), crypto-secured data packaging (AES+SHA), USB/UART debug, and ultra-low-power sleep scheduling (Stop 2 with RTC alarm). Use Value: 2.86 µA Stop 2 current extends 10-year battery life; dual-bank flash enables field-upgradable firmware without downtime. | Use Scenario: Handheld ECG/SpO₂ monitor with OLED display, touch UI, and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Central MCU handling analog front-end (OPAMPs + ADC), capacitive touch (TSC), Chrom-ART-accelerated GUI rendering, and secure BLE packet encryption. Use Value: 37 µA/MHz SMPS-run efficiency maximizes runtime per charge; 24-channel TSC enables robust touchkey UI without external ICs. |
| Secure IoT Gateway | Smart Energy Meter |
Use Scenario: Edge gateway aggregating Zigbee/Z-Wave sub-GHz sensor data, performing local analytics, and forwarding to cloud via TLS-secured Wi-Fi/Ethernet. IC Role / Device Role / Timing Role: Secure host processor executing trusted firmware (via ROP), validating sensor payloads with HASH engine, and managing USB OTG for field service provisioning. Use Value: Hardware RNG and AES/SHA accelerators cut TLS handshake time by >60% vs. software-only; 96-bit UID enables device identity binding. | Use Scenario: DIN-rail mounted electricity meter with metrology ADC, LCD display, tamper detection, and PLC/HPLC communication. IC Role / Device Role / Timing Role: System-on-chip managing metrology interface (DFSDM), 8×40 segment LCD driver, real-time tariff switching (RTC calendar), and secure firmware updates. Use Value: Integrated LCD controller with step-up converter eliminates external bias supply; 125 °C extended temp rating ensures reliability in enclosed meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power Arm Cortex-M4 MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L4R9AIJ6 | 2 MB flash, 640 KB SRAM, no SMPS support, higher 144-pin LQFP package | Better suited for complex GUIs requiring larger code footprint; lacks integrated SMPS control logic | Select when >1 MB flash is required and external DC-DC is acceptable; avoid if board-level SMPS integration is mandatory |
| STM32L552ZEJ6 | ARM TrustZone® security, 512 KB flash, 256 KB SRAM, 110 µA/MHz run (SMPS), -40 to 105 °C | Targeted at certified secure applications (PSA Level 1); lower memory and thermal grade than L4A6 | Choose for PSA-certifiable designs needing hardware-enforced isolation; not drop-in due to TrustZone boot flow changes |
Compared with STM32L4R9AIJ6, the STM32L4A6AGI6TR offers tighter power optimization for long-life battery use and native SMPS control, while the STM32L552ZEJ6 trades raw memory capacity for certified security primitives-making the L4A6 optimal for cost-sensitive, thermally demanding, and energy-critical edge nodes.
Availability
STM32L4A6AGI6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, secure IoT gateways, and smart energy meters requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for STM32L4A6AGI6TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive semiconductors.
The STM32L4 series is engineered for ultra-low-power embedded applications demanding high performance-per-milliwatt, advanced security, and rich analog/mixed-signal integration-targeting wearables, metering, and industrial IoT endpoints.
FAQ
What is the maximum operating temperature for STM32L4A6AGI6TR?
The STM32L4A6AGI6TR is rated for operation from –40 °C to +125 °C ambient temperature, validated per ST's industrial qualification standards. This extended range supports deployment in sealed enclosures, outdoor metering, and under-hood automotive auxiliary systems where thermal dissipation is constrained.
Does STM32L4A6AGI6TR support external memory expansion?
Yes-it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a Dual-flash Quad SPI interface for high-speed serial flash. These interfaces enable external code execution, data logging buffers, and firmware image storage beyond on-chip flash limits.
How does the SMPS interface function in STM32L4A6AGI6TR?
The MCU provides dedicated control signals (VDD12_EN, VDD12_OK) and feedback monitoring to drive an external synchronous buck converter. It dynamically adjusts SMPS output voltage (1.05–1.15 V) based on CPU frequency and voltage scaling level, achieving 37 µA/MHz efficiency-significantly lower than LDO-based operation.
Can STM32L4A6AGI6TR achieve true hardware-based secure boot?
It supports secure boot via Readout Protection (ROP) Level 1/2, Flash Lock, and immutable bootloader in system memory-but lacks ARM TrustZone® or secure enclave. True hardware root-of-trust requires external secure element or pairing with STSAFE-A authentication IC for PSA Level 2 compliance.
STM32L4A6AGI6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 169-UFBGA
- Series:
- STM32L4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, PWM, WDT, (External SMPS Required)
- Number of I/O:
- 136
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 320K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 24x12b SAR; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L4A6AGI6TR FAQ
1.How can I place an order for STM32L4A6AGI6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L4A6AGI6TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32L4A6AGI6TR reliable?
The price and inventory of STM32L4A6AGI6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L4A6AGI6TR is usually 5 days.
3.What payment methods are accepted for STM32L4A6AGI6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L4A6AGI6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L4A6AGI6TR?
STM32L4A6AGI6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L4A6AGI6TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32L4A6AGI6TR?
For technical support, including STM32L4A6AGI6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L4A6AGI6TR requirements.
6.How does Aetrix verify that STM32L4A6AGI6TR is sourced from the original manufacturer or authorized distributors?
All STM32L4A6AGI6TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32L4A6AGI6TR meets industry standards.
7.What is the process for return or replacement of STM32L4A6AGI6TR?
All STM32L4A6AGI6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L4A6AGI6TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32L4A6AGI6TR part is unused and in its original packaging.
Return procedure for STM32L4A6AGI6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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