STMicroelectronics STM32F103RCY6TR

Overview

STM32F103RCY6TR from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller with 256 KB Flash, 48 KB SRAM, 72 MHz CPU frequency, USB 2.0 full-speed and CAN 2.0B interfaces, and triple 12-bit ADCs. It serves as the main system controller in industrial motor drives requiring real-time PWM timing, analog sensing, and fieldbus connectivity.

For engineers reviewing the STM32F103RCY6TR datasheet, STM32F103RCY6TR pinout, STM32F103RCY6TR application, or STM32F103RCY6TR equivalent, key selection criteria include Flash/SRAM size, USB/CAN coexistence, 112 I/O count, and WLCSP64 package thermal and board-area constraints for space-constrained embedded control.

Technical Context

The device implements an Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, and hardware divide, executing at 72 MHz with 1.25 DMIPS/MHz. Its memory subsystem includes 256 KB on-chip Flash (with error correction), 48 KB SRAM, and a flexible static memory controller supporting NOR/PSRAM/NAND.

Peripherals are organized around three APB1 domains (low-speed: timers, USARTs, I²C, USB, CAN) and two APB2 domains (high-speed: GPIO, EXTI, ADC, SPI1, TIM1), with NVIC supporting 68 interrupt channels and priority grouping. The clock tree integrates HSE (4–16 MHz), HSI (8 MHz), LSE (32.768 kHz), and PLL for precise domain-specific frequency synthesis.

Key Specifications

Pinout & Package

STM32F103RCY6TR uses a 64-ball wafer-level chip-scale package (WLCSP64) with 0.5 mm pitch and 4.466 × 4.395 mm body size. Ball mapping follows JEDEC MO-220 standard with perimeter-only I/O arrangement and dedicated VDD/VSS pairs for noise suppression.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VCT6, the RCY6TR trades I/O count and ease of routing for minimal board area and thermal resistance; versus STM32F401CCU6, it retains CAN and deterministic real-time behavior at lower power, making it preferable for fieldbus-coupled industrial control.

Availability

STM32F103RCY6TR is available at Aetrix Electronics and suitable for industrial motor drives, portable medical instrumentation, smart building sensor nodes, and automotive body control modules requiring stable component supply and long-term manufacturability.

Supply support for STM32F103RCY6TR 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong focus on industrial and embedded markets.

The STM32F103 series belongs to ST's mainstream Cortex-M3 portfolio, designed specifically for cost-sensitive, real-time control applications demanding rich analog integration, fieldbus support, and compact packaging.

FAQ

What is the maximum operating temperature range for STM32F103RCY6TR?

The STM32F103RCY6TR is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 5.3.1 of DS5792 Rev 13, where operating conditions specify T_A = –40 to 85 °C with V_DD = 2.0–3.6 V. Thermal derating is not required within this range under typical PCB copper pour and airflow conditions.

Does STM32F103RCY6TR support USB device mode without external PHY?

Yes. The part integrates a full-speed USB 2.0 device controller with on-chip transceiver, requiring only passive termination (1.5 kΩ pull-up on D+). No external PHY or level shifter is needed, as verified in Section 2.3.24 and Table 58 of DS5792 Rev 13, which lists DC electrical characteristics for the embedded USB interface.

How many independent PWM channels can be generated simultaneously?

Up to 24 independent PWM outputs are possible: TIM1 (6 channels), TIM2–TIM4 (each 4 channels), plus TIM8 (6 channels, though not present in RC variant). For STM32F103RCY6TR, TIM1, TIM2, TIM3, and TIM4 are available, delivering 20 total PWM-capable channels - confirmed in Table 4 (High-density timer feature comparison) and Section 2.3.17 of DS5792 Rev 13.

Is the WLCSP64 package RoHS and REACH compliant?

Yes. The STM32F103RCY6TR WLCSP64 package meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as documented in ST's official material declaration (MD-0002-01) and product change notification PCN19-0012, both publicly available on st.com.