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STMicroelectronics ST7FOXK1B6
- Part No.:
- ST7FOXK1B6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-SDIP (0.400", 10.16mm)
- Datasheet:
-
ST7FOXK1B6.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 32SDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,065
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Product details
Overview
ST7FOXK1B6 from STMicroelectronics is an 8-bit Flash microcontroller featuring 4 KB XFlash program memory, 384 bytes RAM, integrated SPI and I²C interfaces, 10-bit ADC with up to 10 channels, six timers (including dual 12-bit auto-reload timers with PWM), and five low-power modes. It operates from a single 2.7–5.5 V supply and targets embedded control in industrial sensors and appliance subsystems.
For engineers reviewing the ST7FOXK1B6 datasheet, ST7FOXK1B6 pinout, ST7FOXK1B6 application, or ST7FOXK1B6 equivalent, key selection considerations include its single-voltage Flash endurance (1k write/erase cycles), internal 8 MHz RC oscillator with trimming, LVD reset supervision, high-sink I/O capability (up to 8 pins), and support for In-Application Programming (IAP) in resource-constrained systems.
Technical Context
This MCU implements the ST7 CPU core with 63 basic instructions, 17 addressing modes, and hardware 8×8 unsigned multiply. Its interrupt system supports 13 vectors plus TRAP and RESET, with configurable software priority and nested handling.
The clock architecture integrates three oscillators: trimmable 8 MHz RC, auto-wakeup low-frequency RC, and external crystal/resonator support. Power management includes Halt, Active-Halt, Wait, Slow, and Auto-Wakeup-from-Halt modes-each with distinct peripheral enable/disable behavior and wake-up source flexibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ST7 8-bit CPU with 63 instructions and 17 addressing modes |
| Flash Memory | 4 KB single-voltage XFlash with Read-Out Protection and 1k write/erase cycle endurance |
| RAM | 384 bytes of on-chip SRAM for data and stack storage |
| ADC | 10-bit successive approximation ADC with up to 10 input channels |
| Timers | Dual 12-bit auto-reload timers (4 PWM outputs, dead-time generation), dual 8-bit Lite timers, one 16-bit timer |
| I/O Ports | Up to 24 multifunctional bidirectional I/Os; up to 8 pins support high-sink output (20 mA) |
| Supply Voltage | 2.7–5.5 V operation with integrated Low Voltage Detector (LVD) for safe power-on/off sequencing |
Pinout & Package
LQFP32 package (7 × 7 mm, 0.8 mm pitch) with 32-pin quad flat lead-free footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main digital supply (2.7–5.5 V); decoupling required near pin |
| VSS | Ground | Digital ground reference for all I/O and core logic |
| PA0–PA7 | Port A I/O | Bidirectional port with alternate functions including ADC inputs and timer capture/compare |
| PB0–PB7 | Port B I/O | Bidirectional port supporting SPI, I²C, and external interrupt inputs |
| PC0–PC7 | Port C I/O | Bidirectional port with high-sink capability (20 mA) on PC0–PC7 |
| PD0–PD7 | Port D I/O | Bidirectional port with dedicated reset, clock, and debug signals (e.g., NRST, OSCIN, OSCOUT, DM) |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates without external programmer via embedded bootloader |
| Auto-Wakeup from Halt mode | Uses internal low-frequency RC oscillator to resume execution after programmable delay (1–65 ms) |
| Dual 12-bit PWM timers | Supports complementary outputs with programmable dead-time insertion for motor control |
| Integrated LVD reset | Configurable threshold (2.5 V or 2.8 V) ensures deterministic reset during brown-out conditions |
| High-sink I/O capability | Eight pins deliver 20 mA sink current-directly drives LEDs or small relays without external drivers |
Applications
| Industrial Sensor Node | Home Appliance Control |
|---|---|
Use Scenario: Standalone temperature/humidity sensor with local display and I²C communication to host MCU. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, LED indicators, button interface, and I²C slave transactions. Use Value: Integrated 10-bit ADC and I²C eliminate external signal conditioning and bus interface ICs; low-power modes extend battery life in wireless variants. |
Use Scenario: Cooktop panel controller monitoring touch keys, driving segment displays, and managing heating element PWM. IC Role / Device Role / Timing Role: Real-time subsystem controller coordinating user input, visual feedback, and thermal safety logic. Use Value: Dual 12-bit PWM timers with dead-time generation safely drive half-bridge heating elements; high-sink I/O directly drives display segments. |
| Smart Meter Subsystem | Motorized Valve Actuator |
Use Scenario: Tamper-detection and pulse-counting module interfacing with main meter MCU via SPI. IC Role / Device Role / Timing Role: Dedicated peripheral co-processor handling optical pulse counting and secure event logging. Use Value: SPI interface enables high-speed, noise-immune communication with host; Flash read-out protection secures firmware against reverse engineering. |
Use Scenario: Compact actuator board controlling 12 V DC motor position via H-bridge and potentiometer feedback. IC Role / Device Role / Timing Role: Closed-loop motion controller executing PID algorithm using ADC input and dual PWM outputs. Use Value: 16-bit timer provides precise timing for PID loop execution; 10-bit ADC resolves <1% position error with standard potentiometers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S003F3P6 | Enhanced ST8 core, 8 KB Flash, 1 KB RAM, higher clock speed (16 MHz), no XFlash endurance guarantee | Higher performance needed for faster control loops; lacks auto-wakeup RC oscillator | Select when requiring >10 MIPS throughput or larger code space; verify LVD behavior matches legacy design constraints |
| EFM8BB10F8G-A-QSOP24 | Silicon Labs 8051 core, 8 KB Flash, 512 B RAM, integrated USB, lower active current (120 µA/MHz) | USB connectivity required; different toolchain and peripheral register map | Choose for designs needing native USB device interface or ultra-low active power; rework I/O mapping and interrupt setup |
Compared with STM8S003F3P6 and EFM8BB10F8G-A-QSOP24, the ST7FOXK1B6 offers proven Flash endurance and auto-wakeup timing predictability at the cost of lower peak performance and no USB integration-making it optimal for cost-sensitive, long-lifecycle industrial controls where deterministic low-power behavior is critical.
Availability
ST7FOXK1B6 is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control modules, smart meter subsystems, and motorized valve actuators requiring stable component supply across multi-year production cycles.
Supply support for ST7FOXK1B6 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, delivering microcontrollers, power management ICs, sensors, and analog solutions for automotive, industrial, and consumer markets.
The ST7 family was designed specifically for cost-optimized, low-power embedded control applications requiring robust Flash reliability, flexible clocking, and integrated peripherals-targeting appliances, industrial automation, and building controls.
FAQ
Does ST7FOXK1B6 support debugging via SWD or JTAG?
No. ST7FOXK1B6 uses the proprietary STMicroelectronics Debug Module (DM) interface, implemented on PD4/PD5 pins in LQFP32 package. It requires ST's ST-LINK-compatible debug adapters and STVD IDE-not SWD or JTAG. The DM interface supports full breakpoint, watchpoint, and memory inspection capabilities during development.
What is the maximum operating frequency with external crystal?
The ST7FOXK1B6 supports external crystal or ceramic resonator operation up to 8 MHz, as specified in Section 6.2.2 of the datasheet. At 8 MHz, the internal prescaler allows system clock division to achieve precise timing for UART, ADC, and PWM-no higher frequency is guaranteed or supported by the silicon.
Can the internal RC oscillator be calibrated for improved accuracy?
Yes. The internal 8 MHz RC oscillator includes factory-trimmed calibration values stored in option bytes, and users can perform custom trimming via RCCRH/RCCRL registers (Section 6.1.2). Typical accuracy after calibration is ±1% over 0–70 °C, sufficient for UART communication at 9600 bps without external crystal.
Is Read-Out Protection (ROP) reversible once enabled?
No. Enabling ROP (via option byte configuration) permanently disables Flash memory read access-including debug read and ICP/IAP read commands. Recovery requires full Flash erase, which clears all code and option bytes. ROP is intended for final production programming only, not development-stage use.
ST7FOXK1B6 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
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 10x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
ST7FOXK1B6 FAQ
1.How can I place an order for ST7FOXK1B6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FOXK1B6 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 ST7FOXK1B6 reliable?
The price and inventory of ST7FOXK1B6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FOXK1B6 is usually 5 days.
3.What payment methods are accepted for ST7FOXK1B6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FOXK1B6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FOXK1B6?
ST7FOXK1B6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FOXK1B6 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 ST7FOXK1B6?
For technical support, including ST7FOXK1B6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FOXK1B6 requirements.
6.How does Aetrix verify that ST7FOXK1B6 is sourced from the original manufacturer or authorized distributors?
All ST7FOXK1B6 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 ST7FOXK1B6 meets industry standards.
7.What is the process for return or replacement of ST7FOXK1B6?
All ST7FOXK1B6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FOXK1B6, 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 ST7FOXK1B6 part is unused and in its original packaging.
Return procedure for ST7FOXK1B6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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