STMicroelectronics STM32F030RCT6TR

Overview

STM32F030RCT6TR from STMicroelectronics is a value-line Arm® Cortex®-M0 32-bit MCU in LQFP64 package, operating at up to 48 MHz with 256 KB Flash and 32 KB SRAM. It integrates a 12-bit ADC (1.0 µs conversion), RTC with alarm, six USARTs (one with auto baud rate), two SPIs (18 Mbit/s), and two I²C interfaces (one supporting Fast Mode Plus at 1 Mbit/s). It targets cost-sensitive industrial control and smart sensor node applications requiring low-voltage operation (2.4–3.6 V) and robust peripheral integration.

For engineers reviewing the STM32F030RCT6TR datasheet, STM32F030RCT6TR pinout, STM32F030RCT6TR application, or STM32F030RCT6TR equivalent, key selection considerations include its 64-pin LQFP package, 55 I/Os (up to 5V tolerant), integrated SWD debug interface, and support for Stop/Standby low-power modes with RTC wakeup - all critical for embedded firmware development and BOM optimization.

Technical Context

The device implements an Arm Cortex-M0 core with Harvard architecture, tightly coupled NVIC and SysTick timer, and supports boot from system memory, main Flash, or SRAM. Its clock tree includes dual oscillators (4–32 MHz HSE and 32 kHz LSE), internal 8 MHz RC with x6 PLL, and 40 kHz LSI for independent watchdog timing.

Peripheral interconnect uses AHB/APB bus matrix with DMA channels routed to ADC, timers, and communication interfaces. The 12-bit ADC features 16-channel multiplexing, separate analog supply (VDDA = 2.4–3.6 V), and built-in temperature sensor and VREFINT calibration values stored in system memory.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), ECOPACK®2-compliant, with exposed thermal pad for enhanced heat dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030RCT6TR, the F4P6 sacrifices package size and feature depth for lowest unit cost, while the F70F6 trades peripheral richness (no RTC, fewer timers) for integrated USB - making the RCT6TR optimal for applications needing balanced I/O count, analog capability, and low-power timing in compact industrial designs.

Availability

STM32F030RCT6TR is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, IoT edge sensor hubs, and PLC digital I/O modules requiring stable component supply and long-term production continuity.

Supply support for STM32F030RCT6TR 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 automotive-grade components since 1987.

The STM32F0 series targets cost-sensitive, resource-efficient embedded applications with Cortex-M0 cores, emphasizing analog integration, low-voltage operation, and industrial-grade reliability - ideal for entry-level automation and smart peripherals.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32F030RCT6TR operates at up to 48 MHz using its internal PLL fed by the 8 MHz HSI or external 4–32 MHz crystal. Its digital and analog supply voltage range is strictly 2.4 V to 3.6 V; operation outside this range risks functional failure or permanent damage. VDDA must be equal to or less than VDD and within the same 2.4–3.6 V window to maintain ADC accuracy and internal reference stability.

Does this MCU support hardware floating-point or DSP instructions?

No, the STM32F030RCT6TR uses the Arm Cortex-M0 core, which lacks hardware floating-point unit (FPU) and DSP extensions. All floating-point operations must be performed in software using CMSIS-DSP library functions. Fixed-point arithmetic is recommended for real-time control loops to ensure deterministic timing and minimal code footprint.

How many I/O pins are 5V tolerant, and what protection is provided?

Up to 55 I/O pins are 5V tolerant on the STM32F030RCT6TR, covering all GPIOs except NRST, BOOT0, and SWD pins. This tolerance is achieved via internal clamping diodes and reinforced oxide gate structures - no external protection is needed when interfacing with standard 5V logic. However, input voltage must never exceed VDD + 4 V, and sustained overvoltage beyond datasheet limits may degrade reliability.

Can the internal 8 MHz RC oscillator be used as the system clock without calibration?

Yes, the internal 8 MHz RC oscillator (HSI) can serve as the system clock source without external components, but its factory-trimmed accuracy is ±1% over temperature and voltage. For applications requiring tighter timing - such as UART communication above 115.2 kbps or precise RTC calibration - use the HSE crystal or apply runtime trimming via the RCC_HSICALIBR register using a known reference signal.