STMicroelectronics STM32F098RCT6

Overview

STM32F098RCT6 from STMicroelectronics is an Arm® Cortex®-M0 32-bit microcontroller with 256 KB Flash, 32 KB SRAM (HW parity), integrated CAN 2.0B interface, 12-bit dual-channel DAC, and 12-bit 1.0 µs ADC-designed for industrial HMI, smart sensor nodes, and CAN-based embedded control systems operating at 1.8 V supply.

For engineers reviewing the STM32F098RCT6 datasheet, STM32F098RCT6 pinout, STM32F098RCT6 application, or STM32F098RCT6 equivalent, key selection criteria include its 48 MHz max CPU frequency, 87 fast I/Os (68 with 5V tolerance), HDMI CEC wakeup capability, dual 12-bit DAC channels, and support for capacitive touch sensing across up to 23 channels.

Technical Context

This MCU integrates a single-cycle ARM Cortex-M0 core with hardware CRC unit, advanced-control timer (TIM1) for 6-channel PWM, and system-level peripherals including RTC with calendar, independent/system watchdogs, and serial wire debug (SWD). It supports multiple clock sources: 4–32 MHz external crystal, 32 kHz LSE for RTC, and internal 48 MHz oscillator with auto-trimming.

The device implements dual-domain power management: digital I/Os operate at 1.8 V ±8%, analog supply (VDDA) ranges 1.8–3.6 V, and selected I/O banks (VDDIO2) support 1.65–3.6 V-enabling mixed-voltage interfacing. Its 12-channel DMA controller offloads data movement between peripherals and memory without CPU intervention.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant ECOPACK2, with 64 pins arranged in quad flat configuration. Pin mapping validated per STMicroelectronics DS10624 Rev 5, Table 12 (STM32F098CC/RC/VC pin definitions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F072RBT6 and STM32F078VBT6, the STM32F098RCT6 uniquely combines 256 KB Flash, full CAN 2.0B, HDMI CEC wakeup, and LQFP64 packaging-making it the only option among these three for feature-rich, CAN-connected, low-voltage HMI applications requiring long-term code scalability and remote wake-up capability.

Availability

STM32F098RCT6 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, and automotive body control modules requiring stable component supply, long-lifecycle support, and ECOPACK2 environmental compliance.

Supply support for STM32F098RCT6 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, specializing in microcontrollers, power management, analog, and MEMS technologies for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, low-power embedded applications requiring high integration and robust real-time performance-specifically optimized for industrial control, appliance HMI, and sensor edge nodes.

FAQ

Does STM32F098RCT6 support USB device functionality?

No. The STM32F098RCT6 does not integrate a USB PHY or USB controller. Unlike some other STM32F0 variants (e.g., STM32F072), this part omits USB_DM/USB_DP pins entirely-confirmed by pin definition Table 12 in DS10624 Rev 5. It relies on external USB-to-CAN or USB-to-UART bridges for host connectivity.

What is the maximum operating temperature range for STM32F098RCT6?

The STM32F098RCT6 is specified for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.3.1 ("General operating conditions") of DS10624 Rev 5, Table 23, and applies to all LQFP64-packaged variants including the 'R' density (64-pin) devices.

Can the internal 48 MHz oscillator be used for USB clocking?

No. Although the internal 48 MHz oscillator is auto-trimmed and accurate enough for many timing-critical functions, the STM32F098RCT6 lacks USB hardware entirely. Therefore, no USB clocking requirement exists for this part-eliminating the need for USB-grade clock accuracy.

Is the 12-bit DAC output buffered?

Yes. Both DAC channels (DAC_OUT1 on PA4 and DAC_OUT2 on PA5) feature integrated output buffers, as specified in Section 3.11 ("Digital-to-analog converter") and electrical characteristics Table 58 of DS10624 Rev 5. These buffers provide rail-to-rail voltage output with 1 µA typical load drive capability, enabling direct connection to op-amp inputs or low-impedance loads without external buffering.