STMicroelectronics STM32F048G6U6

Overview

STM32F048G6U6 from STMicroelectronics is an ARM® Cortex®-M0 32-bit microcontroller with 32 KB Flash, 6 KB SRAM (HW parity), crystal-less USB 2.0 FS interface, and 48 MHz max CPU frequency. It integrates a 12-bit 1.0 µs ADC (10 channels), nine timers including one 16-bit advanced-control timer, and supports capacitive touch sensing for HMI applications in industrial control panels.

For engineers reviewing the STM32F048G6U6 datasheet, STM32F048G6U6 pinout, STM32F048G6U6 application, or STM32F048G6U6 equivalent, key selection criteria include USB FS operation without external crystal, 5 V-tolerant I/O count (up to 24), internal 48 MHz oscillator with automatic trimming, low-voltage operation (1.8 V ±8%), and UFQFPN28 4×4 mm package compatibility with space-constrained embedded designs.

Technical Context

The STM32F048G6U6 implements a single-cycle ARM Cortex-M0 core with NVIC supporting up to 32 interrupts, coupled with a clock recovery system (CRS) enabling precise USB synchronization directly from the internal 48 MHz HSI48 oscillator. Its memory subsystem includes 32 KB of Flash with error correction and 6 KB of SRAM with hardware parity checking.

Power architecture features three independent supply domains: digital core (VDD = 1.8 V ±8%), analog (VDDA = 2.4–3.6 V), and optional I/O bank (VDDIO2 = 1.65–3.6 V), enabling mixed-signal operation and selective 5 V-tolerant I/O activation. Low-power modes include Sleep and Stop with RTC/backup register retention via VBAT.

Key Specifications

Pinout & Package

STM32F048G6U6 is housed in a 28-pin UFQFPN (Ultra Fine Pitch Quad Flat No-lead) package measuring 4.0 × 4.0 mm with 0.5 mm pitch and exposed thermal pad. This compact, lead-free ECOPACK®2-compliant package supports reflow soldering and provides efficient thermal dissipation for industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F042F6P6, STM32F048G6U6 offers 16 KB more Flash, 13-channel TSC, and 28-pin density for enhanced I/O routing; versus STM32F070F6P6, it trades USB integration for reduced peripheral flexibility - making it optimal for space-constrained, USB-native, touch-enabled edge nodes.

Availability

STM32F048G6U6 is available at Aetrix Electronics and suitable for industrial HMI panels, USB sensor nodes, motor control modules, and smart power outlets requiring stable component supply across extended production lifecycles.

Supply support for STM32F048G6U6 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, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, resource-efficient embedded applications demanding USB connectivity, analog integration, and low-voltage operation - with the F048 variant optimized for crystal-less USB and capacitive touch in compact form factors.

FAQ

Does STM32F048G6U6 require an external crystal for USB operation?

No. The device integrates an internal 48 MHz HSI48 oscillator with Clock Recovery System (CRS) that automatically trims against the USB SOF signal, achieving ±0.25% accuracy. This eliminates the need for an external 48 MHz crystal or associated capacitors, reducing BOM cost and PCB footprint while maintaining full USB 2.0 FS compliance.

What is the maximum operating temperature range for STM32F048G6U6?

The STM32F048G6U6 is specified for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.3.1 of the datasheet (DocID026007 Rev 6), where ambient operating conditions are defined for all electrical characteristics, and thermal resistance values (θ_JA = 150 °C/W) are provided for the UFQFPN28 package under standard JEDEC PCB conditions.

Can the 5 V-tolerant I/Os be used with 1.8 V logic levels?

Yes. The up to 24 5 V-tolerant I/Os accept input voltages from 0 to 5.5 V regardless of VDD level (1.8 V), enabling safe interfacing with 3.3 V or 5 V peripherals. Output high level is VDD-dependent (~1.8 V), so external level-shifting is required only when driving 3.3 V/5 V inputs needing >2.0 V logic high - confirmed in Table 47 (I/O static characteristics) and Section 3.7 (GPIOs).

How many capacitive sensing channels does STM32F048G6U6 support?

The device supports up to 13 capacitive sensing channels via its integrated Touch Sensing Controller (TSC), as stated in the "Features" section and Table 5 of the datasheet. These channels can be configured for touchkeys, linear sliders, or rotary wheels, and operate independently of CPU loading using hardware charge transfer and filtering - validated across all STM32F048x6 variants including the G6U6.