STMicroelectronics STM32F048T6Y6TR

Overview

STM32F048T6Y6TR from STMicroelectronics is an ARM® Cortex®-M0 32-bit microcontroller with 32 KB Flash, 6 KB SRAM, crystal-less USB 2.0 FS interface, 12-bit ADC (1.0 µs conversion), and 48 MHz max CPU frequency. It integrates nine timers-including one 16-bit advanced-control timer-and supports capacitive touch sensing across up to 13 channels. Used in USB-connected industrial sensors requiring low-power operation and precise timing.

For engineers reviewing the STM32F048T6Y6TR datasheet, STM32F048T6Y6TR pinout, STM32F048T6Y6TR application, or STM32F048T6Y6TR equivalent, key selection criteria include USB clocking autonomy (48 MHz internal oscillator with trimming), 5 V-tolerant I/O count (up to 24 pins), RTC with calibration, and support for touchkey/linear/rotary sensor interfaces without external crystal.

Technical Context

The device implements a fully integrated clock recovery system (CRS) enabling USB full-speed operation without external crystal by synchronizing its internal 48 MHz HSI48 oscillator to USB SOF packets. Its power architecture separates VDD (1.8 V ±8%), VDDA (2.4–3.6 V), and optional VDDIO2 (1.65–3.6 V) supplies to optimize analog accuracy and I/O flexibility.

Peripheral interconnect uses APB1/APB2 buses with DMA-driven USART, SPI, and I2C controllers; the 12-bit ADC features hardware-calibrated VREFINT and temperature sensor, while TIM1 supports six-channel complementary PWM with dead-time insertion for motor control.

Key Specifications

Pinout & Package

STM32F048T6Y6TR is housed in a UFQFPN28 package (4 × 4 mm, 0.5 mm pitch), optimized for space-constrained USB peripheral designs. Pin layout supports full USB D+/D− routing, dedicated VDDA/VSSA for ADC stability, and separate VDDIO2 supply for mixed-voltage I/O banks.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F048T6Y6TR, STM32F072CBT6 offers more memory but requires external crystal, increasing BOM and layout complexity; STM32F042F6P6 reduces cost and size but sacrifices TSC and I/O count, limiting human-interface functionality.

Availability

STM32F048T6Y6TR is available at Aetrix Electronics and suitable for industrial USB sensor nodes, capacitive touch control panels, low-power battery gauges, and USB-powered smart actuators requiring stable component supply and long-term production support.

Supply support for STM32F048T6Y6TR 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 ICs, sensors, and automotive semiconductors since 1987.

The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring USB connectivity, analog integration, and ultra-low-power operation - especially where crystal-less timing and touch capability add value.

FAQ

Does STM32F048T6Y6TR support USB device enumeration without an external crystal?

Yes. The device integrates an HSI48 oscillator with automatic trimming synchronized to USB Start-of-Frame (SOF) packets, enabling full-speed USB 2.0 device enumeration and data transfer without any external crystal or oscillator. This is confirmed in Section 3.18 and Figure 2 of the official datasheet (DocID026007 Rev 6).

What is the maximum number of 5 V-tolerant I/O pins on STM32F048T6Y6TR?

The STM32F048T6Y6TR supports up to 24 5 V-tolerant I/O pins, as specified in the "Features" section (page 1) and Table 12 (pin definitions) of the datasheet. These pins are distributed across GPIO ports A and B and retain full functionality-including EXTI, ADC input, and TSC channel assignment-when driven by 5 V signals.

Can the internal temperature sensor be used for system thermal monitoring?

Yes. The device includes a calibrated internal temperature sensor with ±2°C accuracy (±1.5°C typical) over –40°C to +85°C, referenced to VDDA. Calibration values are stored in system memory (address 0x1FFFF7B8), and readings can be acquired via ADC channel 16 using standard HAL or LL drivers - validated in Section 3.10.1 and Table 55 of the datasheet.

Is the UFQFPN28 package RoHS-compliant and halogen-free?

Yes. STM32F048T6Y6TR in UFQFPN28 packaging meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, certified under ST's ECOPACK®2 initiative. Package mechanical data (Table 67) and environmental compliance statements are documented in Section 7.3 and Annex A of the datasheet.