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STMicroelectronics ST72F63BH6T1
- Part No.:
- ST72F63BH6T1
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
ST72F63BH6T1.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,858
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Product details
Overview
ST72F63BH6T1 from STMicroelectronics is an 8-bit low-speed USB microcontroller featuring 32 KB Flash program memory, 1024 bytes RAM, integrated USB 1.5 Mbps transceiver with DFU support, 8-bit ADC (12-channel), and dual timers including a 16-bit timer with PWM and capture/compare. It operates at up to 24 MHz and targets embedded human-interface devices requiring compact firmware-upgradable connectivity.
For engineers reviewing the ST72F63BH6T1 datasheet, ST72F63BH6T1 pinout, ST72F63BH6T1 application, or ST72F63BH6T1 equivalent, this device is selected for USB HID endpoints in resource-constrained industrial controls, sensor nodes, and programmable peripheral interfaces where in-application programming (IAP) and low-voltage operation down to 2.7 V are required.
Technical Context
The ST72F63BH6T1 implements the ST7 core architecture with 63 basic instructions and 17 addressing modes, supporting true bit manipulation and 8×8 unsigned multiply. Its USB interface integrates a 3.3 V regulator, differential transceivers, and DMA for endpoint data movement - compliant with USB 2.0 low-speed and HID 1.0 specifications.
Power management includes four CPU modes (Run, Wait, Slow, Halt), optional low-voltage detector (LVD), and RAM retention during Halt mode. The 16-bit timer provides two input capture channels, two output compare channels, PWM generation, and clock input capability - all configurable via dedicated registers without software overhead.
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 interrupt latency. |
| Flash Memory | 32 KB HDFlash with readout/write protection - supports field firmware updates via IAP and ICP without external programmer. |
| RAM | 1024 bytes + 128-byte hardware stack - sufficient for USB descriptor handling, HID report buffering, and real-time sensor processing. |
| USB Interface | Low-speed (1.5 Mbps), full HID class compliance with 3 programmable endpoints - eliminates need for external USB PHY or protocol stack offload. |
| ADC | 8-bit resolution, 12-channel SAR converter with internal reference - suitable for analog sensor interfacing (e.g., potentiometers, thermistors) without external precision references. |
| Timers | One 16-bit timer (IC/OC/PWM/clock input) + programmable watchdog - enables precise motor control timing, pulse-width modulation, and system-level fault recovery. |
| I/O Ports | Up to 27 GPIOs, including 2 true open-drain outputs (25 mA @ 1.5 V) and 8 high-sink lines (10 mA @ 1.3 V) - drives LEDs, relays, and legacy logic directly. |
Pinout & Package
ST72F63BH6T1 is housed in a QFN40 (6 × 6 mm, 0.5 mm pitch) package with wettable flanks, optimized for automated optical inspection and thermal performance in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / Ground | Dual power domains: VDD/VSS for digital core; VDDA/VSSA for analog peripherals - enables noise isolation between MCU logic and ADC. |
| OSCIN / OSCOUT | Crystal oscillator interface | Supports 12 MHz or 24 MHz external crystal - determines USB timing accuracy and CPU clock stability per USB 2.0 low-speed jitter requirements. |
| USB_DP / USB_DM | USB differential data lines | Integrated transceivers eliminate external USB PHY - simplifies BOM and reduces layout complexity for HID-class devices. |
| PA0–PA7 | Port A general-purpose I/O | Includes alternate functions: SCI TX/RX, I²C SCL/SDA, timer inputs/outputs - enables flexible peripheral mapping without pin remapping logic. |
| RESET | Bidirectional reset signal | Accepts external active-low reset and generates internal reset pulse on LVD or watchdog timeout - ensures deterministic startup and fault recovery. |
Key Features
| Feature | Design Value |
|---|---|
| In-application programming (IAP) | Enables firmware updates over USB without halting application execution - critical for remote HID device maintenance. |
| USB DFU class support | Firmware upgrade via standard USB Device Firmware Upgrade protocol - no vendor-specific drivers or tools required for end-user updates. |
| True open-drain I/O (2 pins) | 25 mA sink capability at 1.5 V - directly drives optocouplers, small solenoids, or level-shifted I²C buses without external FETs. |
| Hardware stack (128 bytes) | Dedicated register-based stack separate from RAM - guarantees predictable interrupt response time and eliminates stack overflow risk in real-time contexts. |
| RAM retention in Halt mode | Retains full 1024-byte RAM content while drawing <1 µA - preserves HID state (e.g., key press history, configuration) during battery-powered sleep. |
Applications
| Industrial Human-Machine Interface | USB Sensor Node |
|---|---|
Use Scenario: Keypad-based machine control panel with LED status feedback and USB configuration port. IC Role / Device Role / Timing Role: Central controller managing button scan, LED drive, USB HID report generation, and real-time watchdog supervision. Use Value: Integrated USB transceiver and 25 mA open-drain outputs eliminate external level shifters and driver ICs, reducing bill-of-materials count by 3 components. |
Use Scenario: Battery-powered temperature/humidity monitor reporting via USB HID to host PC or embedded gateway. IC Role / Device Role / Timing Role: Sensor interface hub performing ADC sampling, data formatting, and low-power USB suspend/resume coordination. Use Value: RAM retention in Halt mode preserves sensor calibration data and last-measurement timestamp across multi-day sleep cycles without backup capacitor. |
| Programmable Peripheral Adapter | Legacy Equipment USB Bridge |
Use Scenario: Field-configurable I/O adapter converting parallel/serial signals to USB HID reports for PLC integration. IC Role / Device Role / Timing Role: Protocol translator executing custom I/O mapping logic, SCI/I²C peripheral bridging, and USB descriptor customization. Use Value: 32 KB Flash accommodates multiple configuration profiles and firmware variants - avoids re-spinning hardware for different OEM requirements. |
Use Scenario: Retrofit module adding USB connectivity to older RS-232 or parallel-port lab instruments. IC Role / Device Role / Timing Role: Bus interface converter implementing USB CDC ACM class for virtual COM port emulation. Use Value: On-chip 3.3 V regulator powers USB transceiver and external level-shifter ICs - removes need for secondary voltage rail in retrofit design. |
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 |
|---|---|---|---|
| STM8S105K4T6C | STM8 core, 16 KB Flash, no native USB (requires external PHY); higher clock speed (24 MHz), enhanced ADC (10-bit, 16 ch) | Lacks integrated USB transceiver and DFU - requires additional IC and firmware stack for USB HID | Select when higher ADC resolution or extended timer features outweigh USB integration needs |
| ATMEGA32U4-AU | AVR core, 32 KB Flash, native USB 2.0 full-speed (12 Mbps), 10-bit ADC (12 ch), larger RAM (2.5 KB) | Supports full-speed USB and more complex HID descriptors (e.g., composite devices), but consumes more power in active mode | Prefer for applications needing >1.5 Mbps bandwidth or multi-interface HID devices (e.g., keyboard + mouse + media keys) |
Compared with STM8S105K4T6C and ATMEGA32U4-AU, the ST72F63BH6T1 uniquely balances USB integration, ultra-low-power Halt mode with RAM retention, and cost-effective QFN40 packaging - making it optimal for simple, battery-aware HID endpoints where full-speed USB or advanced peripherals are unnecessary.
Availability
ST72F63BH6T1 is available at Aetrix Electronics and suitable for industrial HMI panels, USB sensor nodes, programmable peripheral adapters, and legacy equipment USB bridges requiring stable component supply and long-term manufacturability.
Supply support for ST72F63BH6T1 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 automotive-grade components since 1987.
The ST7 family was engineered for cost-sensitive, low-power embedded control applications requiring robust real-time performance and integrated communication interfaces - particularly targeting industrial, appliance, and human-interface markets before the STM8 transition.
FAQ
Does ST72F63BH6T1 support USB full-speed (12 Mbps) operation?
No. The ST72F63BH6T1 implements only low-speed USB 1.5 Mbps compliant with USB 2.0 specification section 7.1.17. It lacks the transceiver circuitry and PLL bandwidth required for full-speed operation. Its USB interface is strictly intended for HID-class devices like keyboards, mice, and simple diagnostic tools where bandwidth demands are minimal.
What is the minimum operating voltage with Low Voltage Detector (LVD) enabled?
With LVD enabled, the ST72F63BH6T1 operates reliably down to 2.7 V. The LVD threshold is fixed at 2.7 V ±0.1 V and triggers a reset if VDD falls below this level. This ensures deterministic behavior during brown-out conditions without requiring external supervisor ICs - critical for battery-powered deployments where voltage sag occurs near end-of-life.
Can the 8-bit ADC perform conversions during Halt mode?
No. The ADC requires CPU clock domain activity and cannot operate in Halt mode. However, it remains fully functional in Run, Wait, and Slow modes. For low-power sensing, designers typically use Wait mode with ADC wake-up interrupt - achieving ~100 µA typical current draw while retaining conversion capability and fast wake-up latency.
Is ST72F63BH6T1 pin-compatible with other ST7263Bx variants in QFN40 package?
Yes. All ST7263Bx devices in QFN40 (e.g., ST7263BE6, ST7263BK6) share identical pinouts and mechanical footprint. Differences lie in memory size (4–32 KB Flash), RAM capacity (384–1024 bytes), and factory-programmed option bytes - enabling drop-in replacement during prototyping or volume production without PCB redesign.
ST72F63BH6T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- ST7
- Packaging:
- Tray
- 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:
- 27
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 5.5V
- Data Converters:
- A/D 12x8b
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST72F63BH6T1 FAQ
1.How can I place an order for ST72F63BH6T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST72F63BH6T1 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 ST72F63BH6T1 reliable?
The price and inventory of ST72F63BH6T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST72F63BH6T1 is usually 5 days.
3.What payment methods are accepted for ST72F63BH6T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST72F63BH6T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST72F63BH6T1?
ST72F63BH6T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST72F63BH6T1 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 ST72F63BH6T1?
For technical support, including ST72F63BH6T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST72F63BH6T1 requirements.
6.How does Aetrix verify that ST72F63BH6T1 is sourced from the original manufacturer or authorized distributors?
All ST72F63BH6T1 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 ST72F63BH6T1 meets industry standards.
7.What is the process for return or replacement of ST72F63BH6T1?
All ST72F63BH6T1 units undergo pre-shipment inspection (PSI). If there is an issue with ST72F63BH6T1, 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 ST72F63BH6T1 part is unused and in its original packaging.
Return procedure for ST72F63BH6T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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