STMicroelectronics STM32G041Y8Y6TR

Overview

STM32G041Y8Y6TR from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller with 64 KB Flash, 8 KB SRAM, AES-128/256 hardware encryption, true random-number generator (RNG), and 1.7–3.6 V operation. It integrates two USARTs (one with ISO7816/LIN/IrDA), two I²C interfaces (Fast-mode Plus), two SPIs (32 Mbit/s), 12-bit ADC (0.4 µs conversion), and calendar RTC with wakeup from Stop/Standby-targeted for secure, low-power industrial sensor nodes and smart metering endpoints.

For engineers reviewing the STM32G041Y8Y6TR datasheet, STM32G041Y8Y6TR pinout, STM32G041Y8Y6TR application, or STM32G041Y8Y6TR equivalent, key selection criteria include its WLCSP18 package footprint, 64 MHz max CPU frequency, 11-timer peripheral set (including LPTIM1/LPTIM2), 5-channel DMA, and support for SWD debug-critical for space-constrained, battery-operated embedded designs requiring cryptographic integrity and fast wake-from-low-power response.

Technical Context

The device implements a single-core Arm Cortex-M0+ with Memory Protection Unit (MPU), supporting TrustZone-like isolation via readout protection (RDP) levels and securable flash area. Its clock system combines four oscillators: 4–48 MHz HSE, 32 kHz LSE (calibrated), 16 MHz HSI (±1%), and 32 kHz LSI (±5%), feeding a programmable PLL for precise timing control across operating modes.

Power architecture includes POR/PDR, programmable BOR and PVD, and four low-power states (Sleep, Stop, Standby, Shutdown) with VBAT backup for RTC and registers. Analog subsystem features 12-bit ADC with hardware oversampling up to 16-bit resolution, internal temperature sensor, VREFINT, and VBAT monitoring-all calibrated and characterized per DS12993 Rev 4.

Key Specifications

Pinout & Package

STM32G041Y8Y6TR uses a 18-ball WLCSP (Wafer-Level Chip Scale Package) with 0.4 mm pitch, measuring 1.86 × 2.14 mm. This ultra-compact, bottom-soldered package targets PCB area-constrained applications such as wearables, smart tags, and miniature IoT endpoints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32G031F8P6 and STM32L011K4T6, the STM32G041Y8Y6TR uniquely delivers hardware AES-256, true RNG, and 64 KB Flash in WLCSP18-making it the only option among the three that satisfies both space constraints and IEC 62443-3-3 security requirements for field-deployed edge devices.

Availability

STM32G041Y8Y6TR is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, POS terminal peripherals, and medical wearable patches requiring stable component supply across multi-year production cycles.

Supply support for STM32G041Y8Y6TR 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, MEMS, and analog products for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, secure, and ultra-low-power embedded applications-emphasizing rapid time-to-market through simplified toolchains, integrated security primitives, and broad ecosystem support (STM32CubeMX, HAL, and security middleware).

FAQ

What is the maximum operating frequency of the STM32G041Y8Y6TR?

The STM32G041Y8Y6TR features an Arm Cortex-M0+ core rated for up to 64 MHz operation, achievable using the internal 16 MHz HSI oscillator with PLL multiplication or an external 4–48 MHz crystal. This frequency is fully supported across the –40°C to 125°C temperature range per DS12993 Rev 4 electrical characteristics tables.

Does the STM32G041Y8Y6TR support hardware-based secure boot?

Yes-it implements Readout Protection (RDP) Level 2 and a securable flash area, preventing unauthorized access to firmware and enabling secure boot verification. The embedded AES-256 engine and True RNG further support cryptographic key generation and encrypted firmware image validation per IEC 62443-3-3 Annex A.

Can the STM32G041Y8Y6TR operate from a single 1.8 V supply?

Yes-the device operates across 1.7–3.6 V, so 1.8 V is within specification. At this voltage, the maximum CPU frequency is reduced to 48 MHz (per DS12993 §5.3.1), and certain I/Os may lose 5 V-tolerance. Full functionality-including 64 MHz operation and all peripherals-is guaranteed only above 2.0 V.

Is the WLCSP18 package of the STM32G041Y8Y6TR compatible with standard reflow profiles?

Yes-the WLCSP18 (B06E) package complies with JEDEC J-STD-020 moisture sensitivity level 3 and supports standard Pb-free reflow profiles (peak 260°C). Board layout must follow ST's recommended pad geometry and stencil design in DocID12993 Section 6.3 to ensure reliable solder joint formation and thermal stress relief.