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STMicroelectronics ST72F63BK1B1
- Part No.:
- ST72F63BK1B1
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-SDIP (0.400", 10.16mm)
- Datasheet:
-
ST72F63BK1B1.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 32SDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,371
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Product details
Overview
ST72F63BK1B1 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 firmware-upgradable connectivity.
For engineers reviewing the ST72F63BK1B1 datasheet, ST72F63BK1B1 pinout, ST72F63BK1B1 application, or ST72F63BK1B1 equivalent, key selection considerations include USB HID compliance, in-application programming (IAP) capability, 16 KB Flash density with readout protection, and true open-drain I/Os rated for 25 mA sink at 1.5 V - critical for direct LED or relay drive in space-constrained industrial controls.
Technical Context
This MCU implements the ST7 core architecture with 63 basic instructions and 17 addressing modes, including dedicated 8×8 unsigned multiply and bit manipulation. Its USB interface integrates a 3.3 V regulator and transceivers compliant with USB 2.0 low-speed (1.5 Mbps) and HID 1.0 specifications, supporting suspend/resume and three programmable endpoints.
The on-chip 16-bit timer provides two input capture and two output compare channels, PWM generation, and clock input capability; the watchdog timer offers both hardware and software reset options with configurable timeout. The 8-bit ADC supports up to 12 channels with configurable sampling and conversion timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ST7 8-bit CISC CPU with 63 instructions and 17 addressing modes - enables compact firmware and deterministic real-time control. |
| Flash Memory | 16 KB HDFlash with IAP/ICP support and readout protection - allows field firmware updates without external programmer. |
| RAM Size | 512 bytes + 128-byte stack - sufficient for HID report buffering and multi-task state management in USB peripherals. |
| USB Interface | Low-speed (1.5 Mbps), USB 2.0-compliant with integrated 3.3 V regulator and transceivers - eliminates external PHY and LDO in HID designs. |
| ADC Resolution | 8-bit with 12 input channels - supports analog sensor interfacing (e.g., potentiometers, thermistors) in human-interface applications. |
| Timer Resources | 16-bit timer with 2 input captures, 2 output compares, PWM, and clock input - enables precise pulse measurement and motor/servo control. |
| I/O Sink Capability | 2 true open-drain pins rated 25 mA @ 1.5 V - drives LEDs or small relays directly without external drivers. |
Pinout & Package
ST72F63BK1B1 is housed in a QFN40 (6 × 6 mm, 0.5 mm pitch) package with wettable flanks, optimized for automated optical inspection and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / Ground | Dual power domains: VDD/VSS for digital core; VDDA/VSSA for ADC reference - enables noise-isolated analog sensing. |
| OSCIN / OSCOUT | Crystal oscillator interface | Supports 12 or 24 MHz external crystal - sets system clock with ±1% stability for USB timing compliance. |
| USB_DP / USB_DM | USB differential data lines | Internally terminated 1.5 kΩ pull-up on USB_DP - satisfies USB low-speed device enumeration without external components. |
| PA0–PA7 | Port A I/O bank | Up to 8 pins configurable as interrupt inputs; PA2 has known limitation when OCMP1 enabled - requires firmware mitigation per datasheet Rev 8 §16.1. |
| PB0–PB7 | Port B I/O bank | Includes alternate functions for SCI (TX/RX), I²C (SCL/SDA), and timer inputs - enables concurrent serial and timing peripheral use. |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates over USB or SCI without halting application execution - essential for remote HID device maintenance. |
| USB Device Firmware Upgrade (DFU) | Fully compliant with USB DFU Class Specification v1.1 - allows standardized bootloader-based reprogramming via host PC tools. |
| Low-Voltage Detector (LVD) | Optional on-chip LVD with programmable threshold - prevents erratic operation during brown-out conditions in battery-powered systems. |
| RAM Retention Mode | Maintains full 512-byte RAM content in Halt mode with <1 µA current - preserves context across wake-up events in energy-sensitive applications. |
| High-Sink I/O Capability | 8 pins support 10 mA sink @ 1.3 V; 2 pins support 25 mA sink @ 1.5 V - reduces BOM count by eliminating discrete driver transistors. |
Applications
| Industrial Human-Machine Interface (HMI) | USB Keypad & Numeric Panel |
|---|---|
Use Scenario: Embedded control panel in factory automation equipment with tactile buttons and status LEDs. IC Role / Device Role / Timing Role: Primary USB HID controller managing button scan, LED feedback, and real-time status reporting. Use Value: Integrated USB transceiver and 25 mA open-drain outputs eliminate external level shifters and LED drivers, reducing board area by >30%. |
Use Scenario: Standalone numeric keypad for point-of-sale terminals or access control systems. IC Role / Device Role / Timing Role: USB HID keyboard device with matrix scanning and debounced key reporting. Use Value: 12-channel ADC enables analog slider or rotary encoder integration alongside digital keys, expanding input modality without added ICs. |
| Programmable Sensor Node | Field-Upgradeable Industrial Controller |
Use Scenario: Battery-powered environmental monitor collecting temperature/humidity via analog sensors. IC Role / Device Role / Timing Role: Data acquisition node with ADC sampling, USB-based configuration, and low-power Halt mode between readings. Use Value: RAM retention in Halt mode preserves calibration coefficients and network settings across sleep cycles, enabling sub-µA average current. |
Use Scenario: DIN-rail mounted PLC module requiring post-deployment firmware patches. IC Role / Device Role / Timing Role: Field-programmable controller leveraging IAP and USB DFU for secure, tool-free updates. Use Value: Readout-protected Flash prevents IP leakage while enabling certified firmware revisions - meets industrial cybersecurity requirements. |
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 |
|---|---|---|---|
| ST72F324BJ2B6 | 8 KB Flash, no USB interface, adds CAN 2.0B controller - lacks integrated USB PHY and DFU stack. | Targeted at automotive body electronics with CAN bus integration, not USB HID devices. | Select only if CAN communication is required and USB is handled externally or omitted. |
| STM8S105K4T6C | 16 KB Flash, USB 2.0 full-speed (12 Mbps), enhanced ST8 core - higher performance, larger code footprint, different instruction set. | Suitable for more complex HID devices (e.g., gaming peripherals) requiring faster data throughput. | Choose when USB full-speed bandwidth or advanced peripherals (e.g., CRC, AES) justify migration cost and firmware rewrite. |
Compared with ST72F63BK1B1, ST72F324BJ2B6 removes USB but adds CAN - making it unsuitable for HID replacement; STM8S105K4T6C upgrades to full-speed USB and modern ST8 architecture but requires full firmware porting and increases BOM cost.
Availability
ST72F63BK1B1 is available at Aetrix Electronics and suitable for industrial HMI panels, USB keypads, programmable sensor nodes, and field-upgradeable controllers requiring stable component supply across extended production lifecycles.
Supply support for ST72F63BK1B1 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 sensor solutions for industrial, automotive, and consumer markets.
The ST7 family was designed specifically for cost-sensitive, low-power embedded control applications requiring integrated analog peripherals and USB connectivity - emphasizing firmware security, field upgradeability, and robust I/O drive capability.
FAQ
What USB speed and device class does ST72F63BK1B1 support?
ST72F63BK1B1 supports USB 2.0 low-speed (1.5 Mbps) operation and is fully compliant with the USB HID class specification v1.0. It includes an integrated transceiver, 3.3 V regulator, and hardware DFU class support - enabling plug-and-play HID functionality without external USB PHY components.
Does ST72F63BK1B1 support in-circuit programming (ICP) and in-application programming (IAP)?
Yes - ST72F63BK1B1 supports both ICP via the ICC interface using standard programming tools and IAP via user firmware executing from RAM or protected Flash sectors. IAP enables safe field updates over USB or SCI without erasing active application code, preserving critical configuration data.
What are the power-saving modes available and their typical current draw?
Four modes are supported: Run (<2.5 mA @ 24 MHz), Wait (<1.2 mA), Slow (<0.8 mA), and Halt (<1 µA with RAM retention). Halt mode maintains full 512-byte RAM content and wakes via external interrupt or USB resume - ideal for battery-powered HID devices requiring long standby life.
Can ST72F63BK1B1's ADC operate during low-power modes?
No - the 8-bit ADC must be disabled before entering Halt or Slow mode per datasheet §11.6.4. It can operate in Run and Wait modes only. For ultra-low-power sensing, external analog circuitry with wake-on-compare or periodic wake-up via timer interrupt is required.
ST72F63BK1B1 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:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 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:
ST72F63BK1B1 FAQ
1.How can I place an order for ST72F63BK1B1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST72F63BK1B1 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 ST72F63BK1B1 reliable?
The price and inventory of ST72F63BK1B1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST72F63BK1B1 is usually 5 days.
3.What payment methods are accepted for ST72F63BK1B1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST72F63BK1B1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST72F63BK1B1?
ST72F63BK1B1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST72F63BK1B1 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 ST72F63BK1B1?
For technical support, including ST72F63BK1B1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST72F63BK1B1 requirements.
6.How does Aetrix verify that ST72F63BK1B1 is sourced from the original manufacturer or authorized distributors?
All ST72F63BK1B1 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 ST72F63BK1B1 meets industry standards.
7.What is the process for return or replacement of ST72F63BK1B1?
All ST72F63BK1B1 units undergo pre-shipment inspection (PSI). If there is an issue with ST72F63BK1B1, 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 ST72F63BK1B1 part is unused and in its original packaging.
Return procedure for ST72F63BK1B1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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