STMicroelectronics STM32F101C8T6TR

Overview

STM32F101C8T6TR from STMicroelectronics is a medium-density ARM® Cortex®-M3 microcontroller in LQFP48 package, delivering 36 MHz CPU frequency, 64 KB Flash, 10 KB SRAM, and integrated peripherals including 12-bit ADC (1 µs), three 16-bit timers, two I²C, three USART, and two SPI interfaces - deployed in industrial sensor nodes requiring deterministic real-time control and low-power operation.

For engineers reviewing the STM32F101C8T6TR datasheet, STM32F101C8T6TR pinout, STM32F101C8T6TR application, or STM32F101C8T6TR equivalent, key selection criteria include Flash/SRAM sizing for firmware footprint, 5 V-tolerant GPIO count for legacy interface compatibility, RTC+VBAT support for battery-backed timekeeping, and SWD debug accessibility in space-constrained PCB layouts.

Technical Context

The device implements a single-core ARM Cortex-M3 with Harvard architecture, supporting Thumb-2 instruction set and nested vectored interrupt controller (NVIC) for sub-12-cycle interrupt latency. It integrates a programmable voltage detector (PVD), dual clock domains (HSI/8 MHz ±1%, HSE/4–16 MHz), and PLL-based system clock scaling up to 36 MHz.

DMA channels (7 total) are tightly coupled to peripherals including ADC, USART, SPI, and I²C - enabling zero-CPU-overhead data transfers. The 12-bit ADC supports up to 16 external channels plus internal temperature sensor and V_REFINT, with conversion range of 0–3.6 V and typical INL of ±1 LSB.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK®-certified package with exposed thermal pad - optimized for reflow soldering and thermal dissipation in industrial ambient temperatures up to 85 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, STM32F101C8T6TR provides guaranteed RTC functionality and larger memory for feature-rich firmware; versus STM32F103C8T6, it trades Flash/SRAM capacity for lower unit cost and identical footprint in resource-constrained designs.

Availability

STM32F101C8T6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interface modules, PLC I/O expanders, and medical diagnostic handhelds requiring stable component supply across multi-year production cycles.

Supply support for STM32F101C8T6TR 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 sensors, and automotive-grade components since 1987.

The STM32F101xx series targets cost-sensitive, medium-performance embedded applications - emphasizing low-power operation, robust industrial I/O, and rapid time-to-market for industrial automation and consumer electronics.

FAQ

What is the maximum operating temperature for STM32F101C8T6TR?

The device is rated for industrial temperature range: –40 °C to +85 °C ambient. Junction temperature must remain ≤125 °C under all operating conditions, verified via thermal resistance (θ_JA = 46 °C/W for LQFP48) and power dissipation calculations per Section 6.7 of the datasheet.

Does STM32F101C8T6TR support USB device functionality?

No. This part lacks a USB peripheral block. USB connectivity requires external PHY or migration to STM32F103xx (with USB 2.0 FS) or STM32F07x/F09x series. The on-chip peripherals are limited to USART, SPI, I²C, and CAN (not present in F101x8).

Can the internal 8 MHz RC oscillator be used as the system clock source?

Yes. The factory-trimmed HSI (8 MHz ±1%) can drive the system clock directly or feed the PLL for higher frequencies. It eliminates need for external crystal in non-precision timing applications, though HSE is required for USB or high-accuracy RTC calibration.

Is STM32F101C8T6TR pin-compatible with STM32F103C8T6?

Yes - both use identical LQFP48 package and share identical pin mapping for power, reset, debug, and all GPIOs. However, STM32F103C8T6 adds CAN_RX/CAN_TX on PA11/PA12, which are general-purpose I/O on the F101 variant; firmware must avoid referencing those pins as CAN in F101 code.