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STMicroelectronics STM32L4A6ZGT6
- Part No.:
- STM32L4A6ZGT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
STM32L4A6ZGT6.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,723
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Product details
Overview
STM32L4A6ZGT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 1 MB flash, 320 KB SRAM, USB OTG FS, hardware AES+HASH encryption, and integrated SMPS support. It targets battery-powered industrial sensors, portable medical devices, and smart metering systems requiring long runtime and secure firmware execution.
For engineers reviewing the STM32L4A6ZGT6 datasheet, STM32L4A6ZGT6 pinout, STM32L4A6ZGT6 application, or STM32L4A6ZGT6 equivalent, key selection criteria include its 25 nA shutdown current, dual-bank read-while-write flash, Chrom-ART Accelerator™ for GUI rendering, 3× 12-bit ADCs (5 Msps), and LQFP144 package with 136 fast I/Os (most 5 V-tolerant).
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 80 MHz, and a multi-AHB interconnect matrix supporting concurrent peripheral access without bus contention. Its power architecture includes three independent voltage regulators (LDO/SMPS/bypass) and FlexPowerControl logic managing 7 low-power modes - including Stop 2 (2.57 µA) and Shutdown (25 nA) - with 5 dedicated wakeup pins.
Clock system comprises four PLLs (for CPU, USB, audio, and ADC), internal auto-trimmed multispeed oscillator (±0.25%), and hardware calendar RTC with calibration. Analog subsystem features 2× operational amplifiers with PGA, 2× ultra-low-power comparators, and DFSDM filters for sigma-delta sensor interfacing - all supported by independent analog supply domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time signal processing and floating-point math in resource-constrained edge nodes. |
| Memory | 1 MB dual-bank flash (read-while-write), 320 KB SRAM (64 KB with parity) - supports safe firmware updates and robust data integrity in field-deployed systems. |
| Power Consumption | 25 nA Shutdown mode, 2.57 µA Stop 2 mode - extends battery life to years in intermittent-sensing applications like environmental monitors. |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps), 2× 12-bit DACs, 2× OPAMPs with PGA, 2× comparators - enables high-precision sensor signal conditioning without external components. |
| Security & Crypto | AES-128/256 + SHA-256 hardware accelerator, true RNG, 96-bit unique ID - meets IEC 62443-3-3 SL2 requirements for secure boot and encrypted communication. |
| Package & I/O | LQFP144 (20 × 20 mm), 136 fast I/Os (most 5 V-tolerant), 14 I/Os with independent 1.08–3.6 V supply - simplifies mixed-voltage interface design in industrial HMI and gateway controllers. |
| Communication | 2× CAN 2.0B, 5× USART, 2× SAI, USB OTG FS, SDMMC, Quad SPI - supports multi-protocol connectivity for industrial automation and audio-enabled IoT endpoints. |
Pinout & Package
LQFP144 (20 × 20 mm, 0.5 mm pitch) with exposed thermal pad; 144-pin square package optimized for PCB layout density and thermal dissipation in compact industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Supports 1.71–3.6 V operation; decoupling required per datasheet Section 6.1.6 for stable SMPS/LDO switching. |
| VDDA, VSSA | Analog domain power and ground | Independent 1.62–3.6 V supply for ADC/DAC/OPAMP - critical for noise-sensitive measurements. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | 136 total; most tolerate 5 V inputs - allows direct interfacing with legacy TTL/CMOS logic without level shifters. |
| PC13–PC15 | RTC oscillator pins | Connect 32.768 kHz crystal; enable hardware calendar and tamper detection in battery-backed operation. |
| PA9/PA10 | USB OTG FS D+/D− | Differential full-speed USB interface - requires 1.5 kΩ pull-up on D+ for device enumeration; no external transceiver needed. |
| PD0/PD1 | OSC_IN/OSC_OUT | 4–48 MHz crystal input/output - drives system clock; startup time and load capacitance must match crystal spec per Section 6.3.7. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 25 nA shutdown and 426 nA standby with RTC - reduces annual battery drain to <1.5 µAh in always-on sensor nodes. |
| ART Accelerator™ | Zero-wait-state flash execution at 80 MHz - eliminates cache misses in deterministic control loops (e.g., motor commutation). |
| Chrom-ART Accelerator (DMA2D) | Hardware-accelerated 2D graphics blitting - cuts GUI rendering CPU load by >70% in HMI displays using TFT-LCD panels. |
| Dual-bank flash with ROP | Allows seamless firmware update via bank swap while executing from active bank - prevents bricking during OTA upgrades. |
| DFSDM + Sigma-Delta support | 4 digital filters for oversampled delta-sigma ADCs - enables high-resolution current/voltage sensing in Class I energy meters. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity/pressure node deployed in HVAC ducts with 10-year battery life requirement. IC Role / Device Role / Timing Role: Main controller handling sensor acquisition, BLE transmission, and ultra-low-power scheduling via LPTIM2 and RTC alarms. Use Value: 25 nA shutdown current and 5 µs wakeup from Stop mode enable sub-µA average system current - meeting 10-year runtime target. | Use Scenario: Handheld ECG device acquiring 3-lead biopotential signals with onboard display and Bluetooth LE upload. IC Role / Device Role / Timing Role: Signal processor running real-time QRS detection, driving 240×320 LCD via FSMC, and managing secure patient data storage. Use Value: Integrated 3× ADCs (5 Msps), Chrom-ART Accelerator™, and AES crypto allow clinical-grade signal fidelity and HIPAA-compliant data handling in single-chip solution. |
| Smart Electricity Meter | Audio-Enabled Gateway |
Use Scenario: DIN-rail mounted meter performing Class I accuracy energy measurement, tariff switching, and PLC/GPRS communication. IC Role / Device Role / Timing Role: Metrology engine interfacing sigma-delta ADCs via DFSDM, managing tamper detection via TSC, and executing DLMS/COSEM stack. Use Value: Hardware DFSDM filters and 24-channel capacitive touch support eliminate external metrology ASIC and mechanical buttons - reducing BOM cost by $1.80/unit. | Use Scenario: Home automation hub aggregating Zigbee/Z-Wave sensors and streaming local audio to connected speakers via I²S. IC Role / Device Role / Timing Role: Audio subsystem controller using 2× SAI interfaces for simultaneous playback/capture, and USB OTG for firmware recovery. Use Value: Dual SAI with FIFO buffering and hardware audio clocks (I²S/PCM) ensure jitter-free 48 kHz stereo streaming without CPU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L4R9AII6 | 2 MB flash, 640 KB SRAM, LCD-TFT controller, no SMPS support - higher memory but lacks integrated DC-DC. | Better suited for high-resolution color displays; less optimal for battery-only operation due to missing SMPS efficiency gain. | Select when GUI complexity demands >1 MB code space and external PMIC is acceptable. |
| STM32U575ZIT6 | Arm Cortex-M33, TrustZone, 2.5 µA Stop mode, 1 MB flash - newer architecture with enhanced security and lower active power. | Required for PSA Certified Level 3 or SESIP-certified designs; not drop-in compatible due to peripheral register changes. | Choose for new designs needing certified secure boot and future-proof lifecycle beyond 2030. |
Compared with STM32L4A6ZGT6, STM32L4R9AII6 trades SMPS efficiency for larger display capability, while STM32U575ZIT6 replaces FlexPowerControl with TrustZone-based isolation - making the L4A6 optimal for cost-sensitive, battery-critical applications where legacy toolchain compatibility matters.
Availability
STM32L4A6ZGT6 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart electricity meters, and audio-enabled gateways requiring stable component supply across multi-year production cycles.
Supply support for STM32L4A6ZGT6 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, designing and manufacturing microcontrollers, power ICs, sensors, and automotive chips since 1987.
The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, cryptographic security, and rich analog integration - specifically engineered for intelligent edge devices in industrial, healthcare, and utility markets.
FAQ
What is the maximum operating frequency and corresponding performance metric?
The STM32L4A6ZGT6 runs at up to 80 MHz, delivering 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz). This performance is sustained with zero wait states via the ART Accelerator™, enabling deterministic real-time control in motor drives and sensor fusion algorithms without external RAM.
Does this MCU support external memory expansion, and what interfaces are available?
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 allow expansion of code/data space beyond on-chip 1 MB flash and 320 KB SRAM, essential for OTA firmware staging and graphical asset storage in HMI applications.
How does the SMPS support improve power efficiency compared to LDO-only operation?
The integrated SMPS controller reduces active-mode current to 37 µA/MHz (vs. 91 µA/MHz in LDO mode) by regulating VDD12 at 1.1 V. This 60% reduction in dynamic power enables longer battery life in continuous-sensing applications - validated in ST's ULPMark™ PP score of 80.2, among the highest in the Cortex-M4 ultra-low-power class.
What development tools and debug interfaces are supported?
It supports Serial Wire Debug (SWD) and JTAG via SWJ-DP, plus Embedded Trace Macrocell™ (ETM) for instruction-level tracing. ST's STM32CubeIDE, STM32CubeMX, and ST-LINK/V2-1 debugger are fully compatible - enabling rapid prototyping, clock tree configuration, and low-power mode validation with energy profiling tools.
STM32L4A6ZGT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 144-LQFP
- Series:
- STM32L4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- 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:
- 115
- 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; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L4A6ZGT6 FAQ
1.How can I place an order for STM32L4A6ZGT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L4A6ZGT6 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 STM32L4A6ZGT6 reliable?
The price and inventory of STM32L4A6ZGT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L4A6ZGT6 is usually 5 days.
3.What payment methods are accepted for STM32L4A6ZGT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L4A6ZGT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L4A6ZGT6?
STM32L4A6ZGT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L4A6ZGT6 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 STM32L4A6ZGT6?
For technical support, including STM32L4A6ZGT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L4A6ZGT6 requirements.
6.How does Aetrix verify that STM32L4A6ZGT6 is sourced from the original manufacturer or authorized distributors?
All STM32L4A6ZGT6 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 STM32L4A6ZGT6 meets industry standards.
7.What is the process for return or replacement of STM32L4A6ZGT6?
All STM32L4A6ZGT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L4A6ZGT6, 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 STM32L4A6ZGT6 part is unused and in its original packaging.
Return procedure for STM32L4A6ZGT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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