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STMicroelectronics ST72F63BK4B1
- Part No.:
- ST72F63BK4B1
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-SDIP (0.400", 10.16mm)
- Datasheet:
-
ST72F63BK4B1.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 32SDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,451
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Product details
Overview
ST72F63BK4B1 from STMicroelectronics is an 8-bit low-speed USB microcontroller featuring 16 KB Flash program memory, 512 bytes RAM, integrated USB 1.5 Mbps transceiver with DFU support, 8-bit ADC (12-channel), and dual communication interfaces (SCI + I²C). It operates at up to 24 MHz, supports four power modes (Run/Wait/Slow/Halt), and targets embedded human-interface devices requiring compact firmware-upgradable control.
For engineers reviewing the ST72F63BK4B1 datasheet, ST72F63BK4B1 pinout, ST72F63BK4B1 application, or ST72F63BK4B1 equivalent, this MCU delivers verified USB HID-class functionality, in-application programming (IAP), high-sink I/O capability (10 mA @ 1.3 V), and hardware timer/PWM resources for real-time peripheral control in space-constrained industrial and consumer designs.
Technical Context
This MCU implements the ST7 core with 63 basic instructions and 17 addressing modes, including true bit manipulation and 8×8 unsigned multiply. Its USB interface integrates a 3.3 V regulator and transceivers compliant with USB 2.0 (low-speed) and HID 1.0 specifications, supporting suspend/resume and three programmable endpoints.
The 16-bit timer provides two input capture and two output compare channels plus PWM generation, while the watchdog supports both software- and hardware-triggered reset. The 8-bit ADC features configurable channel count (8 or 12) and conversion time of 13 µs typical at fADC = 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ST7 8-bit CISC CPU with 63 instructions and 17 addressing modes |
| Flash Memory | 16 KB HDFlash with readout/write protection and IAP/ICP support |
| RAM Size | 512 bytes (including 128-byte dedicated stack) |
| USB Interface | Low-speed (1.5 Mbps), USB 2.0/HID 1.0 compliant, 3 endpoints, integrated 3.3 V regulator |
| ADC Resolution | 8-bit with 12-channel multiplexer, 13 µs conversion time at 1 MHz clock |
| Timer Resources | 16-bit timer with 2 input capture, 2 output compare, PWM, and clock input |
| Communication | Asynchronous SCI + I²C multimaster (up to 400 kHz) |
| Power Modes | Run, Wait, Slow, and Halt; RAM retention supported in Halt mode |
Pinout & Package
ST72F63BK4B1 is housed in a QFN40 (6 × 6 mm) package with wettable flanks, rated for industrial temperature range (−40 °C to +85 °C) and compliant with JEDEC MO-220 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / Ground | Dual supply domains: VDD/VSS for digital core; VDDA/VSSA for analog subsystem (ADC reference) |
| OSCIN / OSCOUT | Crystal oscillator input/output | Supports 12 or 24 MHz external crystal; internal RC option not available on BKx variants |
| PA0–PA7 | Programmable I/O port A | Up to 8 lines individually configurable as interrupt inputs; PA2 has limitation when OCMP1 enabled |
| PB0–PB7 | Programmable I/O port B | Includes high-sink capability (10 mA @ 1.3 V); PB6/PB7 support SCI TX/RX functions |
| PC0–PC7 | Programmable I/O port C | PC0–PC3 support I²C SDA/SCL and USB D+/D−; PC4–PC7 configurable as ADC inputs |
| PD0–PD7 | Programmable I/O port D | PD0–PD1 support USB pull-up/pull-down; PD2–PD3 serve as SCI RTS/CTS; PD4–PD7 are general-purpose |
| RESET | Bidirectional reset signal | Active-low input; outputs reset pulse during power-on or LVD event; supports external reset assertion |
Key Features
| Feature | Design Value |
|---|---|
| In-application programming (IAP) | Enables field firmware updates without external programmer via user code execution |
| USB DFU class support | Allows standardized device firmware upgrade over USB without vendor-specific drivers |
| High-sink I/O capability | 8 pins deliver 10 mA at 1.3 V; 2 pins deliver 25 mA at 1.5 V - suitable for direct LED/relay drive |
| Low-power operation | Halt mode draws ≤1.5 µA (typical) with RAM retention - critical for battery-powered HID devices |
| Dual communication interfaces | SCI (asynchronous UART) and I²C multimaster coexist without resource conflict; both support low-power modes |
Applications
| USB Human Interface Device (HID) | Industrial Sensor Node Controller |
|---|---|
|
Use Scenario: Keypad, slider, or rotary encoder interface in medical diagnostic equipment requiring plug-and-play USB connectivity. IC Role / Device Role / Timing Role: Primary USB HID controller managing button state polling, debouncing, and report packet generation at 10 ms intervals. Use Value: Integrated USB transceiver and DFU eliminate external PHY and enable secure firmware updates in deployed units without physical access. |
Use Scenario: Local sensor aggregation node collecting temperature, humidity, and pressure data in factory-floor monitoring systems. IC Role / Device Role / Timing Role: Central data concentrator interfacing analog sensors via ADC and digital sensors via I²C, then transmitting consolidated readings over USB. Use Value: 12-channel ADC with 13 µs conversion time allows sub-100 ms full-sensor-cycle acquisition; I²C multimaster avoids bus arbitration conflicts in multi-sensor networks. |
| Programmable Power Switch Controller | Embedded USB Configuration Tool |
|
Use Scenario: DIN-rail mounted AC/DC power module with adjustable output voltage and current limit set via USB. IC Role / Device Role / Timing Role: Real-time power regulation supervisor using PWM output to control DC-DC converter feedback loop and monitor overcurrent via ADC. Use Value: Hardware PWM with 16-bit resolution enables precise duty-cycle control; high-sink I/O drives status LEDs and relay coils directly without buffer stages. |
Use Scenario: Field-service tool for configuring parameter sets in industrial PLC I/O modules via USB connection. IC Role / Device Role / Timing Role: USB endpoint handling vendor-defined control transfers to read/write EEPROM-based configuration registers. Use Value: In-circuit programming (ICP) and IAP allow runtime reconfiguration of USB descriptors and firmware logic without chip removal or dedicated programming hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit USB microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST72F324BJ4B1 | 8 KB Flash, no USB interface, adds CAN 2.0B controller | Suitable for automotive body electronics where CAN is required but USB is unnecessary | Select when CAN bus integration outweighs USB DFU capability and higher Flash density is not needed |
| STM8S105K4T6C | 16 KB Flash, enhanced ST8 core, USB 2.0 full-speed (12 Mbps), no I²C multimaster | Better throughput for bulk data transfer; lacks I²C slave arbitration needed in multi-master sensor networks | Prefer for high-bandwidth USB peripherals; avoid if I²C multimaster arbitration or low-power HID timing is critical |
Compared with ST72F63BK4B1, ST72F324BJ4B1 trades USB for CAN and reduced memory, making it unfit for HID firmware updates; STM8S105K4T6C offers faster USB but sacrifices I²C multimaster support essential for distributed sensor synchronization.
Availability
ST72F63BK4B1 is available at Aetrix Electronics and suitable for USB HID devices, industrial sensor nodes, programmable power controllers, and embedded configuration tools requiring stable component supply across extended product lifecycles.
Supply support for ST72F63BK4B1 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, specializing in microcontrollers, power management, and sensing technologies for industrial, automotive, and consumer markets.
The ST7 family was designed specifically for cost-sensitive, low-power embedded control applications requiring integrated USB, analog peripherals, and robust in-system programmability - targeting human-interface and sensor-edge use cases.
FAQ
Does ST72F63BK4B1 support USB full-speed (12 Mbps) operation?
No. ST72F63BK4B1 implements only low-speed USB (1.5 Mbps) per USB 2.0 specification. Its integrated transceiver and USB controller are hardware-limited to LS mode and do not support full-speed signaling, frame timing, or high-bandwidth descriptors required for FS operation.
What is the maximum operating frequency of the ST72F63BK4B1 core?
The ST72F63BK4B1 supports a maximum system clock frequency of 24 MHz, achieved using an external crystal oscillator connected to OSCIN/OSCOUT pins. Internal RC oscillators are not available on BKx variants; clock stability and accuracy depend entirely on the external crystal's tolerance and load capacitance.
Can the 8-bit ADC perform simultaneous sampling across multiple channels?
No. The ADC is single-sample successive-approximation architecture with one sample-and-hold circuit. Channel selection is sequential via software or hardware trigger; no hardware scan mode or simultaneous sampling capability exists. Conversion results must be read individually per channel.
Is the ST72F63BK4B1 pin-compatible with other ST7263Bx variants in QFN40 package?
Yes. All ST7263BKx variants (including BK1, BK2, BK4, BK6) share identical QFN40 pinout, electrical characteristics, and package dimensions. Differences are limited to Flash size (4/8/16/32 KB), RAM size (384/512/1024 bytes), and factory-programmed option bytes - no PCB redesign is needed when upgrading within the BKx series.
ST72F63BK4B1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-SDIP (0.400", 10.16mm)
- Series:
- ST7
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- I2C, SCI, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 19
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 5.5V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
ST72F63BK4B1 FAQ
1.How can I place an order for ST72F63BK4B1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST72F63BK4B1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ST72F63BK4B1 reliable?
The price and inventory of ST72F63BK4B1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST72F63BK4B1 is usually 5 days.
3.What payment methods are accepted for ST72F63BK4B1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST72F63BK4B1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST72F63BK4B1?
ST72F63BK4B1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST72F63BK4B1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ST72F63BK4B1?
For technical support, including ST72F63BK4B1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST72F63BK4B1 requirements.
6.How does Aetrix verify that ST72F63BK4B1 is sourced from the original manufacturer or authorized distributors?
All ST72F63BK4B1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ST72F63BK4B1 meets industry standards.
7.What is the process for return or replacement of ST72F63BK4B1?
All ST72F63BK4B1 units undergo pre-shipment inspection (PSI). If there is an issue with ST72F63BK4B1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ST72F63BK4B1 part is unused and in its original packaging.
Return procedure for ST72F63BK4B1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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