STMicroelectronics STM32F103VCH6

Overview

STM32F103VCH6 from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller featuring 72 MHz operation, 256 KB Flash, 48 KB SRAM, USB 2.0 full-speed interface, CAN 2.0B controller, and three 12-bit ADCs with up to 21 channels-used in industrial motor control and embedded HMI systems requiring real-time I/O and mixed-signal processing.

For engineers reviewing the STM32F103VCH6 datasheet, STM32F103VCH6 pinout, STM32F103VCH6 application, or STM32F103VCH6 equivalent, key selection criteria include Flash/SRAM capacity, USB/CAN coexistence, ADC channel count with triple-sample-and-hold, and LQFP100 package compatibility for PCB layout and thermal management.

Technical Context

The STM32F103VCH6 integrates an Arm Cortex-M3 core with Harvard architecture, 3-stage pipeline, and hardware divide/multiply units enabling deterministic 1.25 DMIPS/MHz execution. Its memory subsystem includes 256 KB of single-cycle Flash (with prefetch buffer) and 48 KB of SRAM, plus a flexible static memory controller supporting NOR/PSRAM/NAND with up to four chip selects.

Clock management combines dual oscillators (4–16 MHz HSE + 32 kHz LSE), factory-trimmed 8 MHz HSI, and a PLL capable of generating 72 MHz system clock from multiple sources. Peripheral timing is synchronized via APB1 (36 MHz) and APB2 (72 MHz) buses, with independent reset and power control for each peripheral domain.

Key Specifications

Pinout & Package

LQFP100 package: 100-pin low-profile quad flat package with 0.5 mm pitch, exposed thermal pad, and 80 user-configurable I/O pins supporting multiple alternate functions including USB D+/D−, CAN_H/CAN_L, and ADC_IN0–ADC_IN19.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VCH6, the ZET6 offers headroom for future firmware growth but increases board area and cost, while the F407VGT6 delivers computational uplift at the expense of power efficiency and toolchain migration effort-making the VCH6 optimal for cost-sensitive, thermally constrained motor control deployments.

Availability

STM32F103VCH6 is available at Aetrix Electronics and suitable for industrial motor control, USB-CAN bridge devices, smart energy meter interfaces, and embedded HMI controllers requiring stable component supply across extended production lifecycles.

Supply support for STM32F103VCH6 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, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F103 product line targets cost-sensitive, high-reliability embedded applications demanding rich peripheral integration, deterministic real-time performance, and long-term supply assurance-especially in motor control, industrial automation, and connectivity gateways.

FAQ

What is the maximum operating frequency and associated power consumption of the STM32F103VCH6?

The STM32F103VCH6 operates at up to 72 MHz with typical active current of 36 mA at 3.3 V and 72 MHz (code from Flash). At 8 MHz, it draws 12 mA; in Stop mode with RTC active, consumption drops to 3.5 µA. These values are measured under conditions defined in Section 5.3.5 of DS5792 Rev 13 and assume proper decoupling and ambient temperature of 25°C.

Does the STM32F103VCH6 support USB device functionality without external components?

Yes-the STM32F103VCH6 integrates a full-speed USB 2.0 transceiver with internal pull-up resistors on PA12 (D+). It requires only a single 1.5 kΩ pull-up resistor on D+ for enumeration and standard USB connectors/cabling. No external PHY, level shifter, or crystal is needed, as the USB clock is derived from the internal PLL.

How many ADC channels can be used simultaneously, and what is the minimum conversion time?

All 21 ADC input channels (across three 12-bit ADCs) can be sampled concurrently using triple-sample-and-hold mode. Minimum conversion time is 1 µs per channel at 14 MHz ADC clock (achievable with APB2 prescaler = 1 and ADCCLK = 72 MHz ÷ 5 = 14.4 MHz), as confirmed in Table 59 of DS5792 Rev 13.

Is the STM32F103VCH6 pin-compatible with other members of the STM32F103x series?

Within the LQFP100 package variant, the STM32F103VCH6 shares identical pinout with STM32F103VDH6 and STM32F103ZDH6. However, feature availability (e.g., USB, CAN, ADC count) varies across sub-families; software must verify peripheral presence via device ID registers before initialization.