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STMicroelectronics ST72F63BH2T1
- Part No.:
- ST72F63BH2T1
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
ST72F63BH2T1.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,735
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Product details
Overview
ST72F63BH2T1 from STMicroelectronics is an 8-bit low-speed USB microcontroller featuring 16 KB HDFlash program memory, 512 bytes RAM, integrated USB 1.5 Mbps transceiver with DFU support, 8-bit ADC (12-channel), 16-bit timer with PWM and capture/compare, and dual communication interfaces (SCI + I²C). It operates at up to 24 MHz and targets embedded USB peripheral control in industrial HMI and sensor interface applications.
For engineers reviewing the ST72F63BH2T1 datasheet, ST72F63BH2T1 pinout, ST72F63BH2T1 application, or ST72F63BH2T1 equivalent, this device requires attention to USB suspend/resume timing, LVD configuration for supply monitoring, high-sink I/O drive capability (25 mA true open-drain), and Flash sector protection settings during IAP/ICP programming.
Technical Context
This MCU implements the ST7 core with 63 basic instructions and 17 addressing modes, supporting true bit manipulation and 8×8 unsigned multiply. Its clock system includes selectable 12/24 MHz external oscillator input and four power modes (Run, Wait, Slow, Halt) with RAM retention.
The USB interface integrates a 3.3 V regulator, differential transceivers, and DMA support compliant with USB 2.0 (low-speed) and HID 1.0 specifications. It provides three programmable endpoints (In/Out configurable) and full Suspend/Resume handling without external PHY.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ST7 8-bit CISC CPU with 63 instructions and 17 addressing modes |
| Program Memory | 16 KB HDFlash with readout/write protection and IAP/ICP capability |
| RAM Size | 512 bytes including 128-byte hardware stack |
| USB Interface | Low-speed (1.5 Mbps), USB 2.0 compliant, integrated 3.3 V regulator and transceivers |
| ADC Resolution | 8-bit SAR converter with 12 input channels and programmable sampling |
| Timer System | 16-bit timer with 2 input captures, 2 output compares, PWM generation, and clock input |
| I/O Drive Strength | 2 true open-drain outputs rated for 25 mA at 1.5 V; 8 high-sink I/Os (10 mA at 1.3 V) |
Pinout & Package
ST72F63BH2T1 is housed in a QFN40 (6 × 6 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions include dedicated USB D+/D−, OSCIN/OSCOUT, RESET (bidirectional), VDD/VSS, VDDA/VSSA, and 27 general-purpose I/O lines with interrupt capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Digital core supply (2.7–5.5 V); separate analog domain (VDDA/VSSA) required for ADC stability |
| OSCIN / OSCOUT | Crystal oscillator interface | Supports 12 or 24 MHz external crystal; internal oscillator not present |
| USB_DP / USB_DM | USB differential data pair | Direct connection to USB host; no external termination resistors needed due to integrated transceivers |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O ports | Up to 27 usable pins; PA2 has known limitation when OCMP1 enabled (see Rev 8 erratum) |
| RESET | Bidirectional reset signal | Active-low input; can be driven low by internal WDG or LVD, or asserted externally |
Key Features
| Feature | Design Value |
|---|---|
| In-application programming (IAP) | Enables firmware updates over SCI or USB without external programmer |
| USB Device Firmware Upgrade (DFU) | Fully supports USB DFU class specification for field-upgradable firmware via standard host tools |
| Low-voltage detector (LVD) | Configurable threshold (2.5 V or 2.8 V) with interrupt or reset output for supply monitoring |
| Halt mode power management | Retains RAM content while reducing current to ≤1.5 µA (typical) with peripherals disabled |
| Hardware watchdog timer | Independent clock source with timeout options from 16 ms to 2 s (fCPU = 8 MHz) |
Applications
| Industrial USB Sensor Node | Human-Machine Interface (HMI) Keypad |
|---|---|
Use Scenario: Compact environmental sensor module reporting temperature/humidity via USB HID to PC or PLC. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, USB HID report generation, and low-power wake-on-event. Use Value: Integrated USB transceiver eliminates external PHY; 25 mA open-drain I/O drives LED indicators directly without buffer. |
Use Scenario: Touchless keypad interface for factory control panel with LED feedback and USB HID keyboard emulation. IC Role / Device Role / Timing Role: Real-time key scan engine with debouncing, LED PWM dimming, and HID report packetization. Use Value: 16-bit timer enables precise LED PWM frequency control; 8-channel ADC supports analog slider or potentiometer inputs. |
| Programmable USB Power Monitor | Legacy RS-232 to USB Bridge |
Use Scenario: DIN-rail mounted power meter reading AC voltage/current via shunt/sensor and reporting via USB CDC ACM. IC Role / Device Role / Timing Role: Analog front-end controller with synchronous ADC sampling and USB CDC serial emulation. Use Value: Dual communication interfaces allow simultaneous SCI debug port and USB CDC channel; LVD ensures safe shutdown during brownout. |
Use Scenario: Embedded adapter converting legacy SCI UART signals to USB virtual COM port for industrial equipment. IC Role / Device Role / Timing Role: Protocol translator bridging asynchronous SCI frames to USB CDC ACM packets with flow control. Use Value: Hardware SCI with framing error detection and automatic baud rate detection simplifies integration with variable-speed legacy devices. |
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 | 32 MHz STM8 core, 16 KB Flash, no integrated USB transceiver (requires external PHY) | Requires external USB PHY and level-shifting; higher performance but larger BOM | Select if higher clock speed and enhanced peripherals (e.g., 10-bit ADC, advanced timers) justify added complexity |
| ST7FLITE2BK1T6 | Same ST7 core, 8 KB Flash, no USB interface, SO24 package | Lacks USB functionality; limited I/O count (16 pins) and memory | Choose only for cost-sensitive non-USB applications where footprint and code size are constrained |
Compared with STM8S105K4T6C, ST72F63BH2T1 offers lower system cost via integrated USB PHY but less processing headroom; versus ST7FLITE2BK1T6, it adds essential USB connectivity and doubles Flash capacity at minimal footprint increase.
Availability
ST72F63BH2T1 is available at Aetrix Electronics and suitable for industrial HMI, USB sensor nodes, programmable power monitors, and legacy-to-USB bridge designs requiring stable component supply and long-term manufacturability.
Supply support for ST72F63BH2T1 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, sensors, and automotive ICs.
The ST7 family was designed specifically for cost-sensitive, low-power embedded control applications requiring robust analog integration and simple USB connectivity-prioritizing ease of certification and minimal external components.
FAQ
Does ST72F63BH2T1 support USB host mode?
No. ST72F63BH2T1 implements only USB device mode per its datasheet (Section 11.4). It lacks OTG capabilities, host controller logic, or VBUS sensing circuitry. Applications requiring host functionality must use a companion USB host IC or select an MCU with dual-role support like STM32 USB OTG FS.
What is the maximum allowed crystal frequency for ST72F63BH2T1?
The device supports external crystals up to 24 MHz, as confirmed in Section 6.2.2 and Table 8 of the datasheet. Operation beyond 24 MHz violates absolute maximum ratings and may cause timing violations in USB frame generation and Flash access cycles.
Can the 8-bit ADC operate during Halt mode?
No. According to Section 11.6.4 and Table 21, ADC conversion is disabled in Halt mode. The ADC clock is gated, and no conversions can be initiated or completed. For low-power sensing, use Slow or Wait mode instead, where ADC remains functional with reduced current draw.
Is the QFN40 package RoHS-compliant and lead-free?
Yes. Per STMicroelectronics' packaging documentation (Doc ID 14749), the QFN40 package used for ST72F63BH2T1 is lead-free and RoHS-compliant, with matte tin surface finish and JEDEC-standard reflow profile compatibility (peak temperature 260 °C).
ST72F63BH2T1 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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 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:
ST72F63BH2T1 FAQ
1.How can I place an order for ST72F63BH2T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST72F63BH2T1 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 ST72F63BH2T1 reliable?
The price and inventory of ST72F63BH2T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST72F63BH2T1 is usually 5 days.
3.What payment methods are accepted for ST72F63BH2T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST72F63BH2T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST72F63BH2T1?
ST72F63BH2T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST72F63BH2T1 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 ST72F63BH2T1?
For technical support, including ST72F63BH2T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST72F63BH2T1 requirements.
6.How does Aetrix verify that ST72F63BH2T1 is sourced from the original manufacturer or authorized distributors?
All ST72F63BH2T1 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 ST72F63BH2T1 meets industry standards.
7.What is the process for return or replacement of ST72F63BH2T1?
All ST72F63BH2T1 units undergo pre-shipment inspection (PSI). If there is an issue with ST72F63BH2T1, 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 ST72F63BH2T1 part is unused and in its original packaging.
Return procedure for ST72F63BH2T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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