STM32L041F6P7 - 32MHz Cortex-M0+ 32KB Flash MCU with AES | STMicroelectronics
MPN: STM32L041F6P7 ✓ AktifSTM32L041F6P7 Ringkasan
A microcontroller (MCU) is a self-contained embedded processing unit: a CPU core, program Flash, data SRAM, and a set of on-chip peripherals such as timers, serial interfaces, ADCs and GPIO, all integrated on a single die. The STM32L041F6 belongs to the STM32L0 access line, the entry tier of the STM32 family, and its Arm Cortex-M0+ core is the smallest and most energy-efficient member of the Cortex-M architecture, sitting at the bottom of the hierarchy MCU > microcontroller > embedded processor > semiconductor.
Key features include the 32 MHz Cortex-M0+ core with its single-cycle multiplier and divider, 32 KB of Flash (32K x 8) alongside 8 KB of SRAM, an on-chip hardware AES accelerator for encrypted data links, and a small 20-TSSOP outline that keeps boards compact. The part is listed as Active in the lifecycle, is ROHS3 compliant, ships in a tray package, and carries a stated lead time of 17 weeks as of the October 2026 distributor data.
Technologically, the STM32L041F6 is built around the ultra-low-power Arm Cortex-M0+ core with a 32 MHz maximum clock and a simple, deterministic peripheral set oriented around low-power operation. The 32 KB of Flash holds the application code and the 8 KB of SRAM serves as the working data space, which is adequate for small control loops, sensor fusion and low-rate communications. The AES block offloads encryption from the CPU, freeing the core for acquisition and protocol handling in secure metering and connected-sensor designs.
Typical applications include low-cost IoT sensor nodes, smart water and gas meters, battery-powered wearables and trackers, industrial monitoring modules, compact keypads, and small motor or relay control boards where the 20-pin footprint and low standby current are decisive.
When designing around this device, keep the decoupling network tight: place a 100 nF ceramic capacitor at each VDD pin and a 4.7 uF bulk capacitor close to the supply pins, and verify that your PCB footprint matches the 0.65 mm pitch 20-pin TSSOP. Because only 20 pins are available, budget carefully for analog inputs and serial lines, and confirm that the peripheral mix of your chosen variant matches your design.
This page consolidates distributor pricing, lifecycle status and lead time as of 2026-10-28, a parameter-by-parameter comparison against pin-compatible STM32L0 alternatives, and practical design notes that are not found on the distributor product pages themselves.
Pilihan pengganti yang segera untuk STM32L041F6P7 — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
STM32L031F6P7
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
STM32L051F6P7
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
STM32F031F6P6
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
STM32L011F3P7
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
STM32L021F4P7
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
STM32L041F6P7 Penilaian maksimum & Ciri-ciri Elektrik
| Core | Arm Cortex-M0+ (32-bit RISC) |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Hardware Security | AES encryption accelerator (on-chip) |
| Product Line | STM32L0 access line |
| Kemasan | 20-TSSOP (0.173 inch, 4.40 mm width) |
| Package Pin Count | 20 pins |
| Jenis Pemasangan | Surface Mount |
| Manufacturer | STMicroelectronics |
| Status Lingkungan Hidup | Active |
| Lead Time | 17 weeks (as of 2026-10-28) |
| Packaging | Tray |
| Status RoHS | ROHS3 Compliant |
Konfigurasi Pin STM32L041F6P7
| Pin 1 | VBAT — Backup supply voltage input |
| Pin 2 | PC14-OSC32_IN — General-purpose I/O or external 32.768 kHz oscillator input |
| Pin 3 | PC15-OSC32_OUT — General-purpose I/O or external 32.768 kHz oscillator output |
| Pin 4 | NRST — Active-low system reset input |
| Pin 5 | VDDA/VREF+ — Analog supply voltage and reference input |
| Pin 6 | PA0-WKUP — General-purpose I/O and wake-up pin |
| Pin 7 | PA1 — General-purpose I/O |
| Pin 8 | PA2 — General-purpose I/O |
| Pin 9 | PA3 — General-purpose I/O |
| Pin 10 | PA4 — General-purpose I/O |
| Pin 11 | PA5 — General-purpose I/O |
| Pin 12 | PA6 — General-purpose I/O |
| Pin 13 | PA7 — General-purpose I/O |
| Pin 14 | PB1 — General-purpose I/O |
| Pin 15 | VSS — Ground reference |
| Pin 16 | VDD — Main digital supply voltage input |
| Pin 17 | PA9 — General-purpose I/O |
| Pin 18 | PA10 — General-purpose I/O |
| Pin 19 | PA13 — Serial wire debug programming and system I/O |
| Pin 20 | PA14 — Serial wire debug programming and system I/O |
Aplikasi Biasa
STM32L041F6P7 patut untuk 6 aplikasis: Battery-Powered IoT Sensor Node, Smart Metering and Utility Measurement, Secure Keypad and Access Control Panel, Industrial Process Monitoring Module, Wearable Tracker and Personal Sensor, Small Motor and Relay Control Board.
Battery-Powered IoT Sensor Node
The STM32L041F6P7 fits compact battery-operated sensing nodes because the STM32L0 access line is built around the Arm Cortex-M0+ core running up to 32 MHz, while 8 KB of SRAM is sufficient for short measurement frames, sensor filtering and packet assembly. The 20-TSSOP outline keeps the board footprint small, which matters when the enclosure is a coin-cell or lithium-thionyl module. The on-chip AES accelerator lets the node encrypt its telemetry payload without loading the 32 MHz core, extending usable battery energy between service intervals. Treat the exact active and standby currents as [DATA_NEEDED] and confirm them in the STM32L041x6 datasheet before sizing the cell.
Disebarkan
Smart Metering and Utility Measurement
Utility meters such as water, gas and electricity endpoints need long standby life, secure communications and a very small bill of materials, all of which the STM32L041F6P7 delivers in a single 20-TSSOP device. The 32 KB of Flash holds metering algorithms and communication firmware, and the 8 KB of SRAM accommodates pulse counting, tariff tables and a transmit buffer. Because the STM32L041F6P7 includes a hardware AES accelerator, encrypted downlink commands and authenticated tamper data can be handled without excessive CPU active time. The part's Active lifecycle status and 17-week stated lead time as of 2026-10-28 make it viable for volume meter programs.
Disebarkan
Secure Keypad and Access Control Panel
Electronic locks and access panels benefit from the STM32L041F6P7's combination of an always-available crypto engine and a compact pin count. The hardware AES accelerator accelerates key derivation and encrypted record storage, so the Cortex-M0+ core stays available for keypad scanning, display driving and relay control. The 20-TSSOP package is small enough for a slim reader body, and the 32 KB Flash budget is ample for a firmware image with credential tables and logging. Because 20 pins limit the number of simultaneously usable GPIO and analog inputs, plan the keypad matrix and indicator outputs carefully, and confirm the exact ADC channel count from the datasheet.
Disebarkan
Industrial Process Monitoring Module
Condition-monitoring and process-sensing modules deployed on factory floors need low standby consumption between polling intervals, and the STM32L041F6P7's STM32L0 ultra-low-power architecture is well matched to that duty cycle. The 32 MHz Cortex-M0+ core is fast enough for digital filtering, threshold detection and Modbus-style frame assembly, while the 8 KB of SRAM handles a small history buffer for trending. The TSSOP-20 package is easy to place on a small DIN-rail carrier board and is compatible with the usual 3.3 V industrial supply. Confirm the operating temperature limits for the exact ordering code in the manufacturer datasheet, as those figures were not included in the distributor data captured on 2026-10-28.
Disebarkan
Wearable Tracker and Personal Sensor
Wearables and personal tracking tags place severe constraints on board area and battery life, which is exactly where the 20-pin TSSOP STM32L041F6P7 earns its place. The device combines a 32 MHz Cortex-M0+ core, 32 KB of Flash and 8 KB of SRAM in one of the smallest mainstream MCU packages available, letting the designer reserve board area for the radio and sensor rather than the MCU. The AES accelerator supports encrypted identity data and secure pairing without demanding a higher-power core. Low-power GPIO and timer resources can drive motion sensing and haptic feedback, though the exact GPIO count should be verified against the datasheet before committing the schematic.
Disebarkan
Small Motor and Relay Control Board
Compact actuator and relay boards often need a microcontroller that can sequence outputs, enforce interlocks and report status without adding a large processor. The STM32L041F6P7 provides 32 MHz of Cortex-M0+ performance plus multiple 16-bit timers and general-purpose timers for PWM generation on pumps, fans and solenoid valves, and the hardware AES block can protect command payloads on connected versions of these boards. Its 8 KB of SRAM is sufficient for motion profiles and debounce state machines, while the TSSOP-20 footprint simplifies assembly in high-volume control modules. Note that pin count, not memory, is usually the binding constraint in these designs; verify the exact GPIO and timer channel availability from the manufacturer datasheet.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk STM32L041F6P7 — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | STM32L031F6P7 | STM32L051F6P7 | STM32F031F6P6 | STM32L011F3P7 | STM32L021F4P7 |
|---|---|---|---|---|---|---|
| Package | 20-TSSOP (0.173 inch, 4.40 mm width) | 20-TSSOP - same | 20-TSSOP - same | 20-TSSOP - same | 20-TSSOP - same | 20-TSSOP - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0 | Arm Cortex-M0+ | Arm Cortex-M0+ |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 48 MHz | 32 MHz | 32 MHz |
| Flash Memory | 32 KB (32K x 8) | 32 KB | 64 KB | 32 KB | 16 KB | 16 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 4 KB | 2 KB | 2 KB |
| Hardware AES Accelerator | Yes | No | Yes | No | No | No |
Penyeberangsung Jelas
- Hardware AES in an access-line, 20-pin low-power MCU (vsSTM32L031F6P7)
- Balanced memory density for compact firmware (vsSTM32L011F3P7)
- Headroom for firmware growth while keeping the same footprint (vsSTM32L051F6P7)
- Low-power-focused core frequency choice (vsSTM32F031F6P6)
Catatan Desain
Estimated: with a 3.3 V supply and a 32 MHz Cortex-M0+ core, budget roughly 1 mA of active current per MHz-class load in the tens of milliampere range for the digital section, while the analog domain should be kept separate via the VDD/VDDA split. Place a 100 nF X7R ceramic decoupling capacitor at each VDD pin and at least 4.7 uF of bulk capacitance close to the supply pins, keeping loop areas short. Because exact active and standby currents were not present in the distributor data captured on 2026-10-28, size the battery from the manufacturer datasheet current tables rather than from these estimates.
The STM32L041F6P7 uses a 20-pin TSSOP at 0.65 mm pitch, so pad geometry and solder mask design follow standard 0.65 mm TSSOP land patterns. Keep the two debug pins PA13 and PA14 accessible on test pads or a 1.27 mm Tag-Connect footprint so programming and production test do not require soldering a header. Provide a dedicated ground pour beneath the device and route the decoupling return currents through the package ground pin without vias where possible; the 20-pin count also means every exposed pad should be justified in the schematic review.
Do not assume the AES-equipped STM32L041F6P7 and the AES-less STM32L031F6P7 are interchangeable in firmware: the crypto accelerator and its peripheral clocking must be enabled, and code that depends on hardware AES will fail to run on the STM32L031F6P7. Similarly, swapping in the 48 MHz STM32F031F6P6 changes timing and active current. Validate the exact peripheral and memory map against the manufacturer datasheet, and re-check the supply voltage and operating temperature limits, which were flagged as [DATA_NEEDED] on this page.
Keep the oscillator and crystal circuit (if used) on the opposite side of the PCB from noisy switching nodes, with short ground-guarded traces and a solid ground plane beneath. Because the 20-TSSOP exposes only one main VDD pin in addition to VDDA, consider populating the VDDA pin from a filtered 3.3 V rail through an RC or ferrite bead if analog sensing accuracy matters, and connect VBAT correctly so the part retains RTC data during standby.
Maklumat Kesediaan
Distributor listing states RoHS Status: ROHS3 Compliant. AEC-Q100 grade, REACH, halogen-free and conflict-minerals declarations were not present in the retrieved data and are marked unknown. The part is an industrial/consumer access-line MCU, not an automotive-qualified variant.
