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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersST72F63BE2M1
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ST72F63BE2M1 - STMicroelectronics

Manufacturer Part Number
ST72F63BE2M1
Manufacturer
STMicroelectronics
Allelco Part Number
32D-ST72F63BE2M1
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
15,450 pcs available, New & Original
Parts Description
IC MCU 8BIT 8KB FLASH 24SOIC
Package
24-SOIC (0.295', 7.50mm Width)
Data sheet
ST72F63BE2M1.pdf

HTML Datasheet

ST7263Bxx.pdf

PCN Obsolescence/ EOL

ST6/ ST7 Obs 08/Jul/2015.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 15450

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Specifications

ST72F63BE2M1 Tech Specifications
STMicroelectronics - ST72F63BE2M1 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - ST72F63BE2M1

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply (Vcc/Vdd) 4V ~ 5.5V
Speed 8MHz
Series ST7
RAM Size 1K x 8
Program Memory Type FLASH
Program Memory Size 8KB (8K x 8)
Peripherals DMA, LVD, POR, PWM, WDT
Package / Case 24-SOIC (0.295', 7.50mm Width)
Package Tube
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature 0°C ~ 70°C (TA)
Number of I/O 14
Mounting Type Surface Mount
EEPROM Size -
Data Converters -
Core Size 8-Bit
Core Processor ST7
Connectivity I²C, SCI, USB
Base Product Number ST72F

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.31.0001

Parts Introduction

ST72F63BE2M1 Image
ST72F63BE2M1 (1)

Manufacturer Part Number

ST72F63BE2M1

Manufacturer

stmicroelectronics

Introduction

The ST72F63BE2M1 is an 8-bit embedded microcontroller from STMicroelectronics. It features the ST7 core, which provides a wide range of peripherals and capabilities for various applications.

Product Features and Performance

8-bit ST7 core

8MHz operating speed

8KB of FLASH program memory

1KB of RAM

I2C, SCI, and USB connectivity

DMA, LVD, POR, PWM, and WDT peripherals

14 I/O pins

Product Advantages

Robust 8-bit architecture with rich peripheral set

Suitable for a variety of embedded applications

Low power consumption and wide operating temperature range

Key Reasons to Choose This Product

Reliable and well-established ST7 core

Flexible peripheral options for diverse design needs

Cost-effective solution for budget-conscious projects

Quality and Safety Features

Designed and manufactured to STMicroelectronics' high-quality standards

Supports safety-critical applications with features like LVD and POR

Compatibility

Compatible with other ST7 family microcontrollers

Application Areas

Embedded systems

Industrial automation

Home appliances

Automotive electronics

Consumer electronics

Product Lifecycle

The ST72F63BE2M1 is an obsolete product, meaning it is no longer in active production. There may be equivalent or alternative models available from STMicroelectronics. Please contact our website's sales team for more information on current product offerings.

Frequently Asked Questions(FAQ)

How does the ST72F63BE2M1 compare to other ST7 family microcontrollers in terms of program memory capacity and operating voltage range for embedded control applications?
The ST72F63BE2M1 offers 8KB of flash program memory, which is sufficient for many small-scale embedded control tasks such as sensor interfacing or motor control. It operates across a supply voltage range of 4V to 5.5V, making it suitable for systems requiring stable performance at higher voltages than standard 3.3V designs. While some ST7 variants may offer larger memory (e.g., up to 32KB), this model provides a balanced configuration for cost-sensitive applications where moderate code size and voltage compatibility are prioritized.
What are the key peripheral interfaces available on the ST72F63BE2M1, and how do they support real-time data handling in industrial monitoring systems?
The ST72F63BE2M1 integrates I²C, SCI (Serial Communication Interface), and USB peripherals, enabling communication with sensors, displays, and host systems. Its DMA capability allows direct memory access transfers without CPU intervention, improving efficiency in data logging or continuous sampling scenarios. Combined with PWM outputs and watchdog timer functionality, these features make the device well-suited for low-latency monitoring applications such as temperature tracking or actuator feedback loops within industrial environments.
Can the ST72F63BE2M1 operate reliably in environments with frequent power fluctuations, and what protective mechanisms does it include?
Yes, the ST72F63BE2M1 includes built-in protection features such as Power-On Reset (POR) and Low-Voltage Detection (LVD), which help maintain system stability during voltage sags or brownouts. These safeguards ensure the microcontroller resets cleanly when supply drops below safe thresholds—typically around 3.0V based on typical ST7 behavior—preventing erratic operation or corrupted states in field-deployed equipment like vending machines or remote sensors.
What is the significance of the internal oscillator in the ST72F63BE2M1, and how does it affect timing accuracy compared to external crystal configurations?
The ST72F63BE2M1 uses an internal RC oscillator clocked at 8MHz, eliminating the need for external crystals and reducing board complexity. While this provides reliable operation over the specified -40°C to 85°C temperature range, its frequency tolerance can be ±2% under nominal conditions, leading to potential timing drift in precision-critical applications. For time-sensitive protocols or high-accuracy ADC sampling, designers might consider adding an external crystal, though this increases component count and cost.
Is the ST72F63BE2M1 suitable for battery-powered devices requiring long-term energy efficiency, despite not featuring advanced low-power modes?
Although the ST72F63BE2M1 lacks ultra-deep sleep modes found in modern ARM-based MCUs, it can still achieve reasonable energy savings through software-controlled clock gating and peripheral shutdown during idle periods. With a typical active current draw of ~1.5mA at 5V and 8MHz, it may suffice for intermittent-use battery applications such as periodic environmental sensing, provided duty cycles are kept low. However, for years-long deployments, newer ultra-low-power architectures would be more appropriate.
How much RAM does the ST72F63BE2M1 provide, and what limitations might arise when developing complex algorithms or handling large datasets?
The ST72F63BE2M1 includes 1KB of RAM, which limits the amount of runtime variables, buffers, and stack space available. This constrains algorithm complexity—for example, implementing floating-point math or managing multi-frame image processing becomes impractical. Developers must optimize data structures carefully and avoid dynamic allocation, making it better suited for deterministic control logic rather than data-intensive computations.
What packaging option is available for the ST72F63BE2M1, and how does it impact PCB layout decisions in space-constrained designs?
The ST72F63BE2M1 comes in a 24-pin SOIC package measuring 0.295" wide (7.5mm), offering a compact footprint ideal for medium-density PCBs. With 14 general-purpose I/O pins, designers benefit from moderate connectivity without excessive pin pitch, simplifying routing while maintaining thermal and electrical isolation. However, limited pin count means careful signal assignment is required to accommodate USB, I²C, and PWM functions alongside digital inputs.
Does the ST72F63BE2M1 support firmware updates via bootloader, and what development tools are officially recommended by STMicroelectronics?
The ST72F63BE2M1 does not include a pre-programmed hardware bootloader, but developers can implement one using the onboard serial interface (SCI or USB). STMicroelectronics recommends using their STVD or ST Visual Develop IDE along with ST-Link programmers for flashing and debugging. This enables over-the-air update capabilities in deployed systems, provided proper security measures are implemented to prevent unauthorized reprogramming.
How does the operating temperature range of the ST72F63BE2M1 compare to automotive-grade microcontrollers, and when should it be avoided?
The ST72F63BE2M1 operates from 0°C to 70°C, which restricts use to commercial or industrial environments but excludes harsh automotive applications requiring AEC-Q100 qualification. It is acceptable for office automation, consumer electronics, or factory floor instrumentation but should not be used in engine compartments or outdoor installations exposed to extreme cold or heat without additional thermal shielding.
What role does the Watchdog Timer (WDT) play in ensuring system reliability when using the ST72F63BE2M1 in unattended operations?
The integrated WDT monitors program execution and resets the MCU if software hangs due to infinite loops or interrupt storms. In unattended systems like automated kiosks or metering devices, this prevents permanent failure by restoring normal operation after anomalies. Developers must periodically reset the WDT from firmware; otherwise, unintended resets occur, which can disrupt logging or communication sessions.
Can the ST72F63BE2M1 interface directly with USB host devices, and what software stack is needed for USB CDC communication?
The ST72F63BE2M1 supports full-speed USB via its dedicated USB peripheral, allowing it to act as either a device or limited host depending on configuration. To enable CDC (Communications Device Class) communication—such as virtual COM port emulation—designers must implement USB stack firmware using libraries like ST's STM32Cube for ST7 derivatives or third-party solutions. Hardware requirements include pull-up resistors and precise 12MHz clocking, typically derived from an external crystal since the internal oscillator lacks USB timing accuracy.
What considerations apply when selecting decoupling capacitors for the ST72F63BE2M1 in a high-noise switching power supply environment?
Given the 4–5.5V operating range and potential noise coupling from adjacent digital lines or SMPS ripple, adequate decoupling is critical. Use a 100nF ceramic capacitor close to each VDD/VSS pair, supplemented by a bulk 10µF tantalum near the power entry point. Place these components within 5mm of the IC to minimize inductive loop area and suppress transient spikes that could trigger false resets or corrupt ADC readings.
How does the lack of EEPROM on the ST72F63BE2M1 affect non-volatile data storage strategies in field-programmable devices?
Since the ST72F63BE2M1 has no dedicated EEPROM, persistent data must be stored in flash memory sectors reserved for configuration—requiring wear-leveling algorithms to extend lifespan beyond flash endurance limits (~10k write cycles). Alternatively, external I²C EEPROMs (e.g., 24LCxx series) can be added, increasing BOM cost but simplifying firmware design. This trade-off favors modularity in production units where calibration values or user settings need retention across power cycles.
What are the implications of the Moisture Sensitivity Level (MSL) rating of 3 for the ST72F63BE2M1 in manufacturing and handling?
With an MSL3 classification (168-hour shelf life after opening), the ST72F63BE2M1 requires dry packaging during assembly if stored beyond 168 hours post-moisture exposure. Manufacturers must follow JEDEC J-STD-033 guidelines, including baking before reflow if humidity indicators show activation. Failure to comply risks pop-corning or delamination during soldering, especially in lead-free processes requiring higher peak temperatures.
How does the ST72F63BE2M1’s core architecture differ from modern Cortex-M0+ processors in terms of instruction set and performance per MHz?
The ST72F63BE2M1 implements the legacy ST7 8-bit core, which executes most instructions in a single cycle but lacks hardware multiplication or DSP extensions. At 8MHz, it delivers roughly 4 MIPS throughput—comparable to basic 8051 derivatives but significantly slower than Cortex-M0+ cores achieving >1.5 DMIPS/MHz. This makes it unsuitable for algorithmic-heavy tasks but adequate for simple state machines and register-level I/O control.
Are there any known errata or silicon revisions associated with the ST72F63BE2M1 that impact USB enumeration or PWM resolution?
Early revisions of the ST72F63BE2M1 exhibited occasional USB enumeration failures due to timing jitter in the internal PLL when driven by the RC oscillator. STMicroelectronics addressed this in later batches, but users should consult the latest errata note AN2607 for workarounds involving external 12MHz crystal usage or reduced USB data rates. Additionally, PWM resolution is fixed at 8 bits regardless of clock source, limiting analog-like output granularity in DAC replacement applications.
What alternatives exist if a project requires more than 8KB of flash memory but cannot migrate to 32-bit ARM architectures?
For applications needing >8KB flash without adopting 32-bit cores, consider STMicroelectronics' STM8S series (e.g., STM8S103F3P6), which offers up to 32KB flash, comparable peripherals, and similar 8-bit workflow familiarity. Alternatively, Microchip’s PIC16F1xxx or NXP’s LPC800 families provide modest memory expansions while retaining ease of use. These options maintain backward compatibility with existing toolchains and reduce learning curves compared to ARM-based development.
How does RoHS3 compliance and REACH status influence global distribution strategies when sourcing the ST72F63BE2M1?
As a RoHS3-compliant part unaffected by REACH regulations, the ST72F63BE2M1 meets EU and international environmental standards, avoiding restrictions on substances like lead, mercury, and certain phthalates. This simplifies supply chain logistics for markets including North America, Europe, and Asia, reducing customs delays or documentation overhead associated with hazardous material declarations. However, end-products must still comply with local e-waste directives independently.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics ST72F63BE2M1

Product Attribute ST72F63BE4M1 ST72F63BE6M1 ST72F63BK2M1 ST72F63BE1M1
Part Number ST72F63BE4M1 ST72F63BE6M1 ST72F63BK2M1 ST72F63BE1M1
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Core Size - - - -
Speed - - - -
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Core Processor - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Program Memory Type - - - -
Peripherals - - - -
Data Converters - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Program Memory Size - - - -
RAM Size - - - -
Number of I/O - - - -
Connectivity - - - -
Oscillator Type - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
EEPROM Size - - - -

ST72F63BE2M1 Datasheet PDF

Download ST72F63BE2M1 pdf datasheets and STMicroelectronics documentation for ST72F63BE2M1 - STMicroelectronics.

HTML Datasheet
ST7263Bxx.pdf
PCN Obsolescence/ EOL
ST6/ ST7 Obs 08/Jul/2015.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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ST72F63BE2M1 Image

ST72F63BE2M1

STMicroelectronics
32D-ST72F63BE2M1

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