STMicroelectronics STM32F103RDY6TR

Overview

STM32F103RDY6TR from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller with 384 KB Flash, 64 KB SRAM, USB 2.0 full-speed interface, CAN 2.0B controller, and 72 MHz CPU clock. It integrates three 12-bit ADCs (21 channels), two 12-bit DACs, 11 timers including motor-control PWM units with dead-time generation, and supports LCD parallel interface in 8080/6800 modes. Used in industrial PLCs for real-time I/O control with CAN fieldbus connectivity.

For engineers reviewing the STM32F103RDY6TR datasheet, STM32F103RDY6TR pinout, STM32F103RDY6TR application, or STM32F103RDY6TR equivalent, key selection criteria include Flash size (384 KB), SRAM capacity (64 KB), CAN + USB dual-communication capability, 72 MHz deterministic timing, and LFBGA100 package compatibility with industrial thermal and layout constraints.

Technical Context

The device implements an Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, and hardware divide, enabling deterministic real-time execution at 72 MHz with 1.25 DMIPS/MHz. Its nested vectored interrupt controller (NVIC) supports up to 68 maskable interrupts with programmable priority levels.

Peripheral integration centers on system-level coherency: the flexible static memory controller (FSMC) provides four chip-select outputs for NOR/PSRAM/NAND expansion; the CRC calculation unit accelerates firmware integrity checks; and the RTC with VBAT backup enables time-stamped event logging during main power loss.

Key Specifications

Pinout & Package

LFBGA100 package (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, ECOPACK® certified, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VET6, the RDY6TR offers BGA footprint savings and FSMC support for external displays or memory; versus STM32F407VGT6, it delivers lower power, smaller form factor, and proven qualification for industrial temperature cycling - making it optimal for cost-sensitive, thermally constrained CAN/USB edge nodes.

Availability

STM32F103RDY6TR is available at Aetrix Electronics and suitable for industrial PLCs, motor drives, energy meter concentrators, and building automation gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32F103RDY6TR 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-grade components since 1987.

The STM32F103 series belongs to ST's mainstream Cortex-M3 portfolio, engineered specifically for cost-sensitive industrial control applications demanding real-time determinism, rich analog integration, and fieldbus connectivity without sacrificing code density or debug visibility.

FAQ

What is the maximum operating frequency and associated power consumption in Run mode?

The STM32F103RDY6TR operates at up to 72 MHz with typical active current of 36 mA at 72 MHz, 3.3 V, and 25°C when executing from Flash with peripherals enabled. This value scales linearly with clock frequency and supply voltage per datasheet Table 14, and includes all core and peripheral activity except USB transceiver.

Does this part support hardware encryption or secure boot features?

No. The STM32F103RDY6TR does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. Security relies on software-implemented protocols or external secure elements. For hardware security, ST recommends the STM32L4 or STM32H7 series with TRNG and AES engines.

Can the internal 8 MHz RC oscillator be used as the system clock source without external crystal?

Yes. The factory-trimmed 8 MHz internal RC oscillator can serve as the system clock source, achieving ±1% accuracy after user calibration. It supports full peripheral operation including USB and CAN, though external 8 MHz crystal is required for USB suspend/resume timing compliance per USB 2.0 specification.

What is the qualified temperature range and JEDEC moisture sensitivity level (MSL) for LFBGA100 packaging?

The STM32F103RDY6TR in LFBGA100 is qualified for industrial temperature range (–40°C to +85°C) and carries MSL3 rating per J-STD-020. It requires bake conditioning if exposed to ambient >30°C/60% RH for more than 168 hours prior to reflow, with peak reflow temperature limited to 260°C per JEDEC standards.