STM32L412K8T6 - 80MHz Cortex-M4 64KB MCU | STMicroelectronics
MPN: STM32L412K8T6 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2523 | $3.25 |
| 10 | $3.2523 | $32.52 |
| 100 | $3.2523 | $325.23 |
| 500 | $3.2523 | $1,626.15 |
| 1,000 | $3.2523 | $3,252.30 |
STM32L412K8T6 Overview
What is an ultra-low-power microcontroller? An MCU is an integrated semiconductor that contains a processor core, Flash memory, RAM, peripherals, and communication interfaces on one device. An ultra-low-power MCU adds optimized sleep, shutdown, and low-current operating modes to extend battery life in portable, sensor, and industrial monitoring systems. The STM32L412K8T6 belongs to the STM32L4 microcontroller family and is designed for applications requiring low power consumption and efficient real-time control.
The STM32L412K8T6 provides an Arm Cortex-M4 core with floating-point capability, operating at up to 80 MHz. The verified product data identifies 64 KB Flash memory and a 32-LQFP package. Its supply range of 1.71 V to 3.6 V supports low-voltage designs, while the documented VBAT mode consumes 300 nA for RTC and backup-register operation. Shutdown mode is specified at 16 nA with four wakeup pins, making the device suitable for applications that spend most of their time in low-power states.
Typical embedded applications include low-power sensor nodes, USB-connected control devices, industrial monitoring systems, portable instrumentation, and connected battery-powered products. The Arm Cortex-M4 platform provides a broad software ecosystem and supports efficient control workloads, while USB connectivity enables data exchange with a host device. Exact peripheral details, flash programming requirements, package dimensions, and electrical limits should be confirmed in the STMicroelectronics STM32L412xx datasheet before final schematic and PCB release.
The principal design consideration is matching the device voltage range and low-power mode requirements to the battery or supply topology. Designers should confirm USB transceiver requirements, clock and reset implementation, decoupling, exposed programming access, and thermal conditions against the manufacturer documentation. For replacement decisions, verify pin compatibility, memory capacity, peripheral availability, temperature grade, and firmware support rather than relying on nominal Cortex-M4 equivalence alone.
This product record combines verified distributor identity, manufacturer device information, pricing references, application guidance, and explicit uncertainty markers. It is intended to support engineering selection and sourcing while avoiding assumptions about unprovided electrical, package, or lifecycle details.
Drop-in alternatives for STM32L412K8T6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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STM32L412K8T6
✅ Drop-In✓ In Stock
$3.2523 / Unit
View Datasheet →STM32L412K8
✅ Drop-In📋 Reference alternative (not in catalog)
STM32L412K8T6XXX
✅ Drop-In📋 Reference alternative (not in catalog)
STM32L412K8T6 Maximum Ratings & Electrical Characteristics
| Product Type | 32-bit ultra-low-power microcontroller |
| Processor Core | Arm Cortex-M4 |
| Maximum Operating Frequency | 80 MHz |
| Architecture | 32-bit RISC |
| Flash Memory | 64 KB (64K x 8) |
| Supply Voltage Range | 1.71 V to 3.6 V |
| Operating Temperature Range | -40 °C to 85/125 °C |
| VBAT Mode Current | 300 nA |
| Shutdown Mode Current | 16 nA |
| Shutdown Wakeup Inputs | 4 |
| Package | 32-LQFP (7 x 7 mm) |
| Mounting Type | Surface Mount |
| USB | USB device connectivity indicated by product data |
| Core Feature | Floating-point unit |
| Family | STM32L4 series |
| Manufacturer Product Page | STM32L412xx device family |
STM32L412K8T6 32-lqfp (7 x 7 mm) Pin Configuration Guide
Pin configuration for STM32L412K8T6 (32-lqfp (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 STM32L412K8T6.
Refer to the datasheet for full pin configuration.
Typical Applications
STM32L412K8T6 is suitable for 6 applications: USB-connected sensor node, Battery-powered environmental monitor, Industrial condition monitoring, Portable medical accessory, USB-enabled handheld instrument, Low-power IoT control board.
USB-connected sensor node
The STM32L412K8T6 fits a connected sensor node that must process data while also managing limited energy budgets. Its Arm Cortex-M4 core operates up to 80 MHz, while the 300 nA VBAT-mode and 16 nA shutdown-mode figures provide low-power states between measurement or synchronization events. USB capability is identified in the verified distributor data, so the MCU can support host-device communication when the board supplies the required USB routing, protection, and firmware. The 1.71 V to 3.6 V supply range also suits battery-derived rails, although regulator headroom, USB voltage-domain requirements, and wakeup behavior must be validated in the final design.
Recommended
Battery-powered environmental monitor
For a battery-powered environmental monitor, the STM32L412K8T6 combines a low 1.71 V minimum supply requirement with shutdown and VBAT operating modes. The device can remain in a very low-current state between sensor readings and use four shutdown wakeup inputs to initiate a measurement sequence. Its 80 MHz Cortex-M4 core provides responsive control for sampling, filtering, local status handling, and data preparation. The design should measure the complete sensor, regulator, radio, and indicator load rather than assuming the MCU's low-mode current represents system current. Battery chemistry, peak load behavior, sensor standby requirements, and enclosure temperature must be included in validation.
Recommended
Industrial condition monitoring
STM32L412K8T6 is suitable as the control core for an industrial condition-monitoring module that measures vibration, temperature, or equipment state. The 80 MHz Arm Cortex-M4 core supports responsive digital filtering and control logic, while the documented -40 °C to 85/125 °C family range provides a useful basis for environmental planning. The MCU's low-power modes can reduce energy when monitoring intervals are predictable, but the exact ordering variant and system qualification must be confirmed. Industrial deployment also requires EMC control, surge protection, sensor isolation or conditioning, watchdog strategy, and long-term supply planning; those requirements are not established by the supplied snippets.
Recommended
Portable medical accessory
The STM32L412K8T6 can serve as the main controller in a portable medical accessory when the required low-power behavior and communication interfaces are confirmed. Its 80 MHz Cortex-M4 core is suitable for coordinating sensor acquisition, user controls, status reporting, and data buffering, while the 1.71 V to 3.6 V operating range supports compact power architectures. Medical use requires more than electrical suitability: the manufacturer’s exact product documentation, applicable regulatory requirements, electrical isolation strategy, patient-safety risk assessment, and software validation must be completed separately. Do not treat the MCU temperature range or RoHS status as proof of medical certification.
Recommended
USB-enabled handheld instrument
The STM32L412K8T6 is a practical fit for a USB-enabled handheld instrument when the board needs local control, USB data exchange, and flexible low-power states. The 32-LQFP 7 x 7 mm package supports compact assembly, and the Cortex-M4 core can manage control logic, data formatting, and user-interface updates at up to 80 MHz. USB connectivity is called out by the verified distributor data, but the exact electrical interface, transceiver arrangement, and supported USB mode must be taken from the official device documentation. A practical design should reserve controlled USB routing, provide ESD protection, maintain a stable supply during enumeration, and validate suspend and shutdown transitions with the complete peripheral set.
Recommended
Low-power IoT control board
The STM32L412K8T6 can be used in a low-power IoT control board that coordinates sensors, actuators, and local status indicators. Its low-power modes are useful when the board spends substantial time waiting for a wakeup event, remote command, or scheduled control action, while the 80 MHz Cortex-M4 core provides enough performance for local logic and protocol framing. The MCU itself is not a radio, so wireless connectivity, power regulation, and sensor conditioning must be supplied by the rest of the design. Firmware should use the documented wakeup sources carefully and should avoid peripherals that prevent the intended shutdown or VBAT states. Board-level current measurements are essential.
Recommended
Recommended Products Summary
Engineering reference data for STM32L412K8T6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32L412K8T6 | STM32L412K8 | STM32L412K8T6XXX | STM32F072RBT6TR | STM32L073RZT6 |
|---|---|---|---|---|---|---|
| Package | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) - reference | Package designation requires exact suffix confirmation | Package designation requires exact suffix confirmation | 64-LQFP - not same package | 64-LQFP - not same package |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 family designation | Arm Cortex-M4 family designation | Different STM32 family; core details require datasheet | Different STM32 family; core details require datasheet |
Key Differentiators
- Ultra-low-power operating modes (vs STM32F072RBT6TR)
- Arm Cortex-M4 performance class (vs STM32L073RZT6)
- USB-oriented connectivity positioning (vs STM32F072RBT6TR)
Design Notes
Design the supply rail for the verified 1.71 V to 3.6 V STM32L412K8T6 operating range, while separately checking every rail required by USB, sensors, and external logic. Confirm regulator dropout, startup sequencing, decoupling, and peak current rather than relying only on the MCU's low-power mode figures. Use the official datasheet for absolute voltage limits and operating conditions before selecting capacitors or protection devices.
Do not treat STM32L412K8T6, STM32L412K8, or STM32L412K8T6XXX as interchangeable solely because the base family names match. Confirm the complete orderable suffix, package, memory density, temperature grade, pin functions, and firmware device identifier. The supplied cross-reference results did not verify five true same-foothead replacements, so any redesign requires an official pinout and datasheet comparison.
Place required decoupling close to the STM32L412K8T6 supply pins and preserve clean routing for clock, reset, programming access, and USB-associated signals. The verified data identifies a 32-LQFP 7 x 7 mm package, but no complete pinout was supplied; obtain the official package drawing before assigning nets or defining the land pattern. Validate thermal performance and assembly clearances using the manufacturer package data.
Compliance Information
Compliance status was not explicitly stated in the supplied verified data. Confirm current STMicroelectronics documentation for the exact orderable STM32L412K8T6 variant.