STM32F072CBT6

STMicroelectronics STM32F072CBT6 – 32-bit Arm Cortex-M0 MCU with USB FS in LQFP-48

The STMicroelectronics STM32F072CBT6 is a versatile, value-line 32-bit microcontroller built on the Arm Cortex-M0 core running up to 48 MHz. With 128 KB of embedded Flash, 16 KB SRAM, an integrated USB 2.0 full-speed device peripheral, a 12-bit SAR ADC, and a rich set of timers and serial interfaces, it offers an excellent balance of capability, cost, and ease of use for embedded control and USB-enabled devices. Housed in a space-efficient 48-pin LQFP (7 × 7 mm) package and qualified for -40 to +85°C operation, the STM32F072CBT6 fits a wide range of industrial and consumer applications.

Engineers appreciate the STM32F072 family for its straightforward development flow, solid peripheral mix, and reliable sourcing from STMicroelectronics. For buyers and sourcing managers, the device’s active lifecycle status and RoHS/REACH compliance streamline qualification and long-term product planning.

At-a-Glance Specifications

• Brand / Manufacturer: STMicroelectronics
• MPN: STM32F072CBT6 (STM32F072 series)
• Core and architecture: Arm Cortex-M0, 32-bit
• Maximum CPU frequency: Up to 48 MHz
• Flash memory: 128 KB
• SRAM: 16 KB
• USB: USB 2.0 Full-Speed device
• Analog: 12-bit SAR ADC
• Timers: General-purpose/basic timers, watchdogs, SysTick
• Serial interfaces: I2C, SPI, USART/UART
• Clock features: Internal oscillators, PLL, Clock Recovery System (CRS) for USB
• Supply voltage: 2.0 V to 3.6 V
• Operating temperature: -40 to +85°C (T6 order code)
• Package: LQFP-48 (7 × 7 mm), 0.5 mm pitch
• Mounting: Surface mount; packaging in tray
• Compliance: RoHS compliant; manufacturer declares REACH compliance

Note: For characteristics not listed above (for example, detailed I/O counts per package, precise ADC channel count, and current consumption figures), refer to the official datasheet.

Why Choose the STM32F072CBT6?

Balanced feature set for cost-sensitive designs

The STM32F072CBT6 blends a capable 48 MHz Cortex-M0 core with just the right set of peripherals—USB FS device, ADC, timers, and common serial buses—to address many mainstream embedded use cases without over-provisioning. That keeps BOM and development complexity in check.

Native USB device for rapid connectivity

USB full-speed device functionality allows quick implementation of USB HID, CDC (virtual COM port), and mass-storage style applications. The integrated Clock Recovery System (CRS) simplifies USB synchronization by assisting in maintaining the required USB timing accuracy when using internal oscillators.

Scalable within the STM32F0 family

As part of the STM32F072 series in the STM32F0 family, this device benefits from broad ecosystem support and pin/package options. If your design later requires a smaller or larger Flash footprint, the same board can often be used with a memory-variant drop-in (verify compatibility), helping reduce redesign risk.

Proven supply chain and compliance

With an active lifecycle and RoHS/REACH declarations from STMicroelectronics, the STM32F072CBT6 fits well into modern compliance workflows and procurement processes.

Architecture and Peripherals Overview

Processing and clocks

• 32-bit Arm Cortex-M0 CPU up to 48 MHz provides enough performance for responsive control loops, protocol handling, and general-purpose applications.
• Internal oscillators and an on-chip PLL support flexible system clock setups.
• Clock Recovery System (CRS) aids in aligning the internal clock to USB SOF packets for robust USB full-speed device operation.

Practical tip: When designing for USB, take advantage of the CRS to reduce reliance on external crystal oscillators in USB device applications where allowed by the performance needs of your product. Always validate timing margins under worst-case conditions.

Memory subsystem

• 128 KB embedded Flash memory supports code storage for sizeable application stacks.
• 16 KB SRAM allows efficient buffering for communication, USB endpoints, and real-time tasks.

Memory organization details (such as Flash erase sectors/pages or EEPROM emulation specifics) are not specified in the provided summary; consult the datasheet for memory map and programming guidelines.

Integrated USB 2.0 Full-Speed device

• Native full-speed device peripheral simplifies PC and embedded host connectivity.
• Suitable for HID (human interface), CDC (virtual COM), and mass-storage style device classes in cost-effective applications.
• CRS-based clock synchronization can reduce the need for an external crystal in some designs.

Note: USB host capability is not specified for this device; treat the USB function as device-only based on the provided data.

Analog and timing resources

• 12-bit SAR ADC enables basic to intermediate analog measurement tasks such as sensor interfacing, supply monitoring, and control loops.
• General-purpose/basic timers, watchdogs, and SysTick provide timebase generation, PWM (if configured via general-purpose timers), and system tick support for RTOS or cooperative schedulers.

Exact ADC channel counts, sampling speeds, and timer channel mappings are not specified in the provided data; refer to the datasheet for channel availability and performance characteristics.

Serial communication interfaces

• I2C for low-speed sensor and peripheral connectivity
• SPI for higher-throughput serial links and external device control
• USART/UART for robust asynchronous communications and bootloaders

Peripheral instance counts and advanced features (DMA, LIN support, etc.) are not specified in the provided data and should be confirmed in the datasheet.

Package, PCB, and Manufacturing Notes

Package and footprint

• LQFP-48 package (7 × 7 mm) with 0.5 mm pitch
• Surface-mount device, supplied in trays

Follow ST’s recommended land pattern, soldering profile, and standoff guidance in the datasheet and application notes. Pay close attention to USB signal integrity (D+/D− pair routing), decoupling placement adjacent to VDD pins, and analog layout practices around the ADC input network.

Thermal and environmental

• Operating temperature (T6 order code): -40 to +85°C
• Use adequate copper area and ground reference for thermal performance and noise mitigation; exact thermal metrics are not specified in the provided data.

Power and supply

• Operating voltage range: 2.0 V to 3.6 V
• Employ per-pin or per-domain decoupling as recommended by ST; current consumption figures are not specified in the provided data and should be verified in the datasheet under relevant modes and clock configurations.

Typical Applications

• General-purpose embedded control
• USB device applications (HID, CDC, mass storage)
• Consumer and industrial control
• Battery-powered and cost-sensitive designs

The STM32F072CBT6 targets designs where a modest CPU, native USB device, and common serial and analog features meet the product requirements without the overhead of higher-end cores. Examples include USB dongles, PC accessories, test/measurement utilities, small control nodes, user-interface bridges, and simple gateways.

Lifecycle, Replacements, and Sourcing

Lifecycle status

• Status: Active (per STMicroelectronics STM32F0 family portfolio information in the supplied data)

As with any MCU, always verify lifecycle status and longevity commitments with STMicroelectronics or authorized distributors at the time of design freeze.

Replacements and pin-compatible options

• Same-series, reduced memory option: STM32F072C8T6 (64 KB Flash) in the same LQFP-48 package. Verify firmware size, bootloader behavior, and any memory-dependent features before substitution.
• Family-level guidance: Pin-compatible options may exist within the STM32F0 and STM32G0 families; confirm peripheral equivalence, clocking differences, and firmware/library compatibility prior to a drop-in change.

No other specific replacements are provided in the supplied data.

Ordering and packaging

• Orderable MPN: STM32F072CBT6
• Package: LQFP-48 (7 × 7 mm), 0.5 mm pitch
• Packaging: Tray

Check authorized distributors for current stock levels, lead times, and pricing.

Compliance and Environmental

• RoHS: RoHS compliant, lead-free (ECOPACK materials)
• REACH: Manufacturer declares REACH compliance

If your product requires documentation for audits or filings, request the latest declarations and material content reports from STMicroelectronics or your distributor. Additional environmental or reliability test data is not specified in the provided information.

Design Tips and Integration Notes

USB layout and firmware

• Route D+ and D− as a matched differential pair with controlled impedance and minimal stubs.
• Keep the USB connector ground reference and ESD protections close to the receptacle.
• Use the CRS feature to simplify clocking where appropriate; thoroughly validate USB enumeration and transfer stability across voltage and temperature margins.

Power integrity and reset

• Place decoupling capacitors close to each VDD pin; include bulk capacitance near the MCU to handle transient loads.
• Observe reset pin filtering and boot configuration strapping per the datasheet to ensure predictable startup.

Firmware ecosystem

• The Cortex-M0 core is widely supported by standard Arm toolchains and debuggers. Startup code, linker scripts, and peripheral drivers should follow the STM32F0 series conventions. Specific middleware availability is not enumerated in the provided data—consult ST resources and your tool vendor.

Frequently Asked Questions (FAQs)

What is the CPU core and maximum frequency?

Arm Cortex-M0 core, up to 48 MHz.

How much memory does the STM32F072CBT6 provide?

128 KB Flash and 16 KB SRAM.

Does it support USB natively?

Yes. It integrates a USB 2.0 full-speed device peripheral. Clock Recovery System (CRS) support helps meet USB timing requirements when using internal oscillators.

What is the operating temperature range for the T6 variant?

Typically -40 to +85°C for the T6 order code in LQFP packages (per the provided data).

What voltage range does it operate over?

2.0 V to 3.6 V.

Is this device RoHS and REACH compliant?

Yes. The provided data indicates RoHS compliance (lead-free ECOPACK materials) and a manufacturer REACH declaration.

Are low-power mode currents specified here?

Not specified in datasheet (in the provided summary). Refer to the official datasheet for detailed current consumption across run, sleep, and stop modes.

Is the USB host role supported?

Not specified. Based on the provided information, treat the integrated USB as device-only.

Are there pin-compatible alternatives?

The STM32F072C8T6 offers a similar feature set with 64 KB Flash in the same package. Other pin-compatible parts may exist within STM32F0/STM32G0 families; verify peripherals and firmware before substitution.

Resources

• Datasheet: https://www.st.com/resource/en/datasheet/stm32f072xb.pdf

If your design depends on parameters beyond those listed here—such as exact peripheral instance counts, ADC channel configuration, DMA capabilities, current consumption, or bootloader details—consult the datasheet and related application notes from STMicroelectronics.