STM32L4A6AGI6 - 80MHz Cortex-M4 MCU | STMicroelectronics
MPN: STM32L4A6AGI6 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.2312 | $10.23 |
| 10 | $8.02662 | $80.27 |
| 25 | $7.47504 | $186.88 |
| 100 | $6.86909 | $686.91 |
| 250 | $6.58019 | $1,645.05 |
| 500 | $6.40614 | $3,203.07 |
STM32L4A6AGI6 Overview
A microcontroller is a programmable integrated circuit that combines a CPU core, memory, communication interfaces, timers, analog conversion blocks, and GPIO in one device. In the system hierarchy, the STM32L4A6AGI6 is a Cortex-M4 MCU, an embedded microcontroller, a semiconductor, and a member of the STM32L4 family. This integration lets a compact product perform control, communications, data acquisition, security, and low-power management without separate discrete controllers.
Verified headline features include an Arm Cortex-M4 core with FPU at up to 80 MHz, 100 DMIPS, 1 MB of Flash organized as 1M x 8, and 320 KB of SRAM. The part also provides USB OTG FS, audio support, AES plus HASH, digital filtering for sigma-delta modulators, an LCD interface, and a high-performance external SMPS controller. These resources support firmware consolidation while keeping the board area below that of several discrete processors.
The STM32L4A6xG family emphasizes ultra-low-power operation and performance efficiency. Its Cortex-M4 processing core, fast GPIO, communication peripherals, analog functions, and security hardware make it suitable for connected sensing, industrial equipment, human-interface systems, and compact control platforms. The exact package pin assignments and electrical limits should be checked against the official 169-ball data before layout release.
Typical applications include USB-connected data acquisition, industrial sensor hubs, low-power gateways, audio-control systems, security-aware embedded controllers, and LCD-based human-interface devices. The 80 MHz Cortex-M4 core provides useful processing headroom, while 1 MB Flash and 320 KB SRAM reduce pressure on external memory for moderate firmware and data workloads.
A key design consideration is BGA assembly: the 169-UFBGA package is not a hobbyist-friendly footprint and benefits from careful escape routing, controlled impedance, adequate thermal vias, and manufacturing capability. Firmware and peripheral assignments must also be validated because unused balls, power balls, and special-function balls are package-specific.
This page consolidates verified manufacturer and distributor information, exact source links, practical design guidance, pricing data, and replacement analysis that are not presented as a single connected engineering resource on ordinary distributor listings.
Drop-in alternatives for STM32L4A6AGI6 — 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:
STM32L4A6AGI6P
✅ Drop-In📋 Reference alternative (not in catalog)
STM32L4A6AGI6 Maximum Ratings & Electrical Characteristics
| Product Type | Ultra-low-power 32-bit microcontroller |
| Processor Core | Arm Cortex-M4 |
| Architecture | 32-bit RISC |
| Maximum Core Frequency | 80 MHz |
| Performance | 100 DMIPS |
| Floating-Point Unit | Present |
| Flash Memory | 1 MB (1M x 8) |
| SRAM | 320 KB |
| USB Interface | USB OTG FS |
| Display Support | LCD interface |
| Security Accelerator | AES and HASH |
| Digital Filter Support | DFSDM |
| Audio Support | Supported |
| External Power-Supply Control | External SMPS |
| Package | 169-UFBGA, 7 x 7 mm |
| Mounting Type | Surface Mount |
| Operating Voltage | 3 V |
STM32L4A6AGI6 169-ufbga, 7 x 7 mm Pin Configuration Guide
Pin configuration for STM32L4A6AGI6 (169-ufbga, 7 x 7 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM32L4A6AGI6.
Refer to the datasheet for full pin configuration.
Typical Applications
STM32L4A6AGI6 is suitable for 6 applications: USB Data-Acquisition Hub, Industrial Sensor Gateway, Secure Connected Controller, Low-Power HMI Panel, Audio Control and Conditioning, Compact USB Control Module.
USB Data-Acquisition Hub
The STM32L4A6AGI6 fits a USB data-acquisition hub because its verified 80 MHz Arm Cortex-M4 core, 320 KB SRAM, USB OTG FS, and DFSDM capability consolidate host-side control and sensor processing. The Cortex-M4 supplies 100 DMIPS of performance, while 1 MB Flash provides room for protocol, control, and data-management firmware. USB OTG FS can manage device communication, and DFSDM is suited to compatible sigma-delta conversion paths. The practical benefit is fewer external components and a smaller 7 x 7 mm footprint. However, designers must verify sampling bandwidth, DMA behavior, USB timing, and channel requirements against the complete datasheet.
Recommended
Industrial Sensor Gateway
The STM32L4A6AGI6 suits an industrial sensor gateway that must aggregate measurements and communicate over USB while maintaining an ultra-low-power-oriented architecture. Its 80 MHz Cortex-M4 core can coordinate protocol stacks and sensor control, and 320 KB SRAM reduces the need for external memory during buffering. AES and HASH hardware supports authenticated or encrypted data paths, while LCD support can provide local diagnostics on gateways with a display. Compared with several separate low-power MCUs, the integrated feature set can simplify the board and firmware structure. The final design must validate converter accuracy, communication latency, industrial temperature limits, and electromagnetic performance.
Recommended
Secure Connected Controller
The STM32L4A6AGI6 fits a secure connected controller because AES and HASH acceleration is integrated with an 80 MHz Arm Cortex-M4 core and USB OTG FS connectivity. Firmware can maintain encrypted communication channels, authenticate data, and execute application tasks without a separate cryptographic accelerator. The 320 KB SRAM provides room for buffers and protocol state, while 1 MB Flash supports a larger embedded application than a small low-end MCU. Engineering attention is still required for secure boot, key provisioning, update authentication, debug access, and physical tamper controls. Hardware acceleration supports those mechanisms but does not replace a complete product security architecture.
Recommended
Low-Power HMI Panel
The STM32L4A6AGI6 is relevant to a compact human-interface panel because its verified LCD interface, 80 MHz Cortex-M4 core, and 320 KB SRAM support responsive graphical control, input handling, and local protocol tasks. The Cortex-M4 FPU benefits algorithms that process sensor or audio data locally, while USB OTG FS can provide configuration or data connectivity. The ultra-low-power family positioning also makes the device appropriate for panel designs where idle energy matters. A complete implementation still needs a suitable display controller interface, touch strategy, backlight driver, memory layout, and board-level power design. Package escape routing must be validated before layout.
Recommended
Audio Control and Conditioning
The STM32L4A6AGI6 can serve as the control processor in an audio-conditioning system that combines digital filtering, USB connectivity, and real-time control. The verified DFSDM capability is relevant to compatible sigma-delta audio paths, while USB OTG FS supports a digital host interface. The 80 MHz Cortex-M4 with an FPU provides processing capacity for filtering, gain control, status logic, and communications, and 320 KB SRAM supports intermediate buffers. DFSDM does not replace a complete codec path, so the engineer must verify codec interfaces, sample rates, latency, and clocking. The BGA package also demands assembly and inspection capability suited to fine-pitch production hardware.
Recommended
Compact USB Control Module
The STM32L4A6AGI6 is a strong candidate for a compact USB control module requiring local processing rather than a simple USB bridge. Its 80 MHz Cortex-M4 core and 100 DMIPS performance can manage control logic, data preparation, and user commands while USB OTG FS handles connectivity. The 1 MB Flash and 320 KB SRAM are useful for protocol stacks and embedded control firmware, and the integrated 169-UFBGA package limits board area compared with several discrete ICs. Designers should confirm USB class support, power requirements, enumeration behavior, ESD protection, connector routing, and firmware support. If USB must remain available during low-power states, current consumption and clock behavior require detailed validation.
Recommended
Recommended Products Summary
Engineering reference data for STM32L4A6AGI6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32L4A6AGI6P |
|---|---|---|
| Package | 169-UFBGA (7 x 7 mm) | 169-UFBGA (7 x 7 mm) |
| Brand | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M4 | Arm Cortex-M4 |
| Maximum Frequency | 80 MHz | 80 MHz |
| Flash Memory | 1 MB (1M x 8) | 1 MB (1M x 8) |
Key Differentiators
- Feature consolidation (vs STM32L4A6AGI6P)
- Security-aware embedded control (vs Generic Cortex-M4 alternatives without verified AES/HASH support)
- Mixed-signal and connectivity integration (vs Single-purpose low-power MCUs)
Design Notes
Treat the 169-UFBGA 7 x 7 mm footprint as a production-engineering task rather than a generic BGA. Use the official package drawing for ball locations, solder mask, paste, copper, and thermal design. The supplied data does not include individual pin names or land-pattern dimensions, so do not infer them from the package outline. Validate escape routing, fanout vias, impedance, assembly capability, X-ray coverage, and boundary-scan access before tooling.
Verify every power ball and voltage domain against the official STM32L4A6xG datasheet before power integrity calculations. The verified distributor data identifies a 3 V part, but it does not provide current limits, sequencing rules, or detailed decoupling tables. Place the required local decoupling directly at the relevant supply pins using manufacturer-recommended capacitance and tolerance. Estimate total rail current from enabled peripherals, CPU utilization, USB activity, and external loads before selecting regulators.
Preserve clean return paths for the Cortex-M4 core, 80 MHz clock domain, USB, and high-speed memories even though this device is primarily a microcontroller. Route sensitive clocks away from USB data and switching-power nodes, use short return references for decoupling, and avoid splits beneath interface paths. Estimated: an 80 MHz clock implies a 12.5 ns period, so clock skew, jitter, loading, and return-path discontinuities can materially affect margin. Validate the final PCB with signal-integrity and EMC tests.
Do not treat Cortex-M4 compatibility as sufficient evidence for drop-in equivalence. Boot modes, debug pins, USB routing, analog pins, alternate-function mappings, oscillator connections, supply pins, and firmware startup behavior can differ even when memory and frequency match. Compare the official ordering table and package pin tables for every candidate. Also verify production traceability, assembly yield, package markings, and long-term lifecycle commitments instead of relying only on a parametric search result.
Compliance Information
The supplied verified snippets do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the manufacturer name or package.
