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STMicroelectronics ST7FOXK1T6
- Part No.:
- ST7FOXK1T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
ST7FOXK1T6.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,844
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Product details
Overview
ST7FOXK1T6 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 4 PWM outputs), and five power-saving modes. It operates from a single 2.95–5.5 V supply and targets embedded control in industrial sensors and motor-driven appliances.
For engineers reviewing the ST7FOXK1T6 datasheet, ST7FOXK1T6 pinout, ST7FOXK1T6 application, or ST7FOXK1T6 equivalent, key selection criteria include its single-voltage Flash endurance (1k write/erase cycles), internal 8 MHz RC oscillator with trimming, low-voltage supervisor (LVD), high-sink I/O capability (up to 8 pins), and support for In-Application Programming (IAP) and In-Circuit Programming (ICP).
Technical Context
The ST7FOXK1T6 implements the ST7 CPU core with 63 basic instructions, 17 addressing modes, and illegal opcode detection. Its clock system integrates a trimmable 8 MHz RC oscillator, auto-wakeup low-frequency RC oscillator, and external crystal/ceramic resonator support - all managed via the Multi-Oscillator (MO) controller and Reset Sequence Manager (RSM).
Interrupt handling supports 13 vectors plus TRAP and RESET, with software-configurable priority and nested servicing. Peripheral timing is coordinated through dedicated registers for each timer block (Lite, Auto-reload, 16-bit), with synchronized PWM output, input capture, dead-time generation, and enhanced one-pulse mode functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST7 CPU with 63 instructions and 17 addressing modes - enables compact firmware and deterministic real-time response. |
| Flash Memory | 4 Kbytes single-voltage XFlash with Read-Out Protection - supports field updates via ICP/IAP without external voltage programming. |
| RAM | 384 bytes on-chip SRAM - sufficient for stack, variables, and small buffers in sensor or actuator control tasks. |
| ADC | 10-bit SAR ADC with up to 10 input channels - provides sufficient resolution for analog sensor interfacing (e.g., temperature, voltage monitoring). |
| Timers | Dual 12-bit auto-reload timers (4 PWM outputs, dead-time generation), dual 8-bit Lite timers, one 16-bit timer - enables precise motor control, PWM dimming, and time-critical event scheduling. |
| I/O Capability | Up to 24 multifunctional bidirectional I/Os, including 8 high-sink outputs (20 mA typical) - drives LEDs, relays, and logic-level peripherals directly. |
| Power Modes | Five low-power modes: Halt, Active-Halt, Auto Wakeup from Halt, Wait, Slow - extends battery life in portable or energy-constrained systems. |
Pinout & Package
LQFP32 package (7 × 7 mm, 0.8 mm pitch) with 32-pin quad flat profile - suitable for automated SMT assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary 2.95–5.5 V supply rail for core and I/O; decoupling required near pin. |
| VSS | Ground reference | Digital ground return path; separate analog ground not provided - shared VSS used for ADC reference stability. |
| PA0–PA7 | Port A I/O | Bidirectional port with alternate functions including ADC inputs, SPI, I²C, and timer outputs. |
| PB0–PB7 | Port B I/O | Bidirectional port supporting high-sink outputs (20 mA), external interrupt inputs, and reset configuration. |
| PC0–PC7 | Port C I/O | Multifunction port with UART, timer, and clock input capabilities; includes OSCIN/OSCOUT for crystal interface. |
| RESET | Active-low reset input | Asynchronous external reset pin; internally pulled up - enables reliable power-on initialization and watchdog recovery. |
| CLK | External clock input | Accepts external clock source (0–8 MHz) or crystal/resonator (1–8 MHz) - selectable via option byte configuration. |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates during runtime without halting system operation - critical for remote or safety-critical field upgrades. |
| Low Voltage Detector (LVD) | Monitors VDD and triggers safe reset below programmable threshold (2.7–4.5 V) - prevents erratic behavior during brown-out conditions. |
| Dual 12-bit Auto-reload Timers | Support 4 independent PWM outputs with configurable dead-time insertion - essential for brushless DC motor commutation and power converter control. |
| Internal Trimmable 8 MHz RC Oscillator | Factory-trimmed to ±1% accuracy; user-adjustable via calibration register - eliminates need for external crystal in cost-sensitive applications. |
| High-Sink I/O Pins | 8 pins capable of sinking 20 mA each - directly drives LEDs, small solenoids, or optocoupler inputs without external drivers. |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
Use Scenario: Standalone temperature/humidity sensor node with local display and wireless telemetry interface. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, I²C sensor reads, SPI flash logging, and low-power wake-up scheduling. Use Value: Integrated LVD and five power modes enable >1-year battery life; 4 KB Flash accommodates sensor fusion algorithms and OTA update staging. |
Use Scenario: Washing machine main control board regulating motor speed, water valve timing, and user interface. IC Role / Device Role / Timing Role: Central MCU coordinating PWM-driven BLDC motor, relay drivers, keypad scan, and fault detection logic. Use Value: Dual 12-bit timers with dead-time generation ensure safe motor phase switching; high-sink I/O directly controls valves and indicators. |
| Energy Meter Front-End | Motorized Valve Actuator |
Use Scenario: Residential electricity meter measuring voltage/current via shunt or CT, calculating kWh, and communicating via RS-485. IC Role / Device Role / Timing Role: Signal acquisition and preprocessing unit performing ADC oversampling, filtering, and SPI communication to host processor. Use Value: 10-bit ADC with 10-channel multiplexing supports multi-point sensing; I²C interface connects to RTC and EEPROM for time-stamped data storage. |
Use Scenario: HVAC zone damper actuator requiring precise angular positioning and torque-limited movement. IC Role / Device Role / Timing Role: Closed-loop position controller using PWM-driven stepper motor, feedback from potentiometer ADC, and thermal protection monitoring. Use Value: Integrated 16-bit timer enables accurate motion profiling; LVD ensures fail-safe shutdown during supply dip; IAP allows field calibration updates. |
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 (16 MHz), improved ADC linearity (±1 LSB INL), no XFlash architecture. | Requires updated toolchain and lacks XFlash IAP flexibility; better suited for higher-performance control loops. | Select when needing >10 MIPS throughput or tighter ADC accuracy; verify bootloader compatibility for field updates. |
| EFM8BB10F8G-A-QFN20 | Silicon Labs 8051-based MCU, 8 KB Flash, 512 B RAM, 25 MHz max, built-in USB interface, lower active current (150 µA/MHz). | No native SPI/I²C slave mode flexibility; USB replaces serial comms but adds layout complexity. | Prefer for USB-connected edge devices; avoid if legacy SPI/I²C peripheral compatibility is mandatory. |
Compared with STM8S003F3P6 and EFM8BB10F8G-A-QFN20, the ST7FOXK1T6 offers superior Flash endurance management for frequent IAP, proven industrial qualification, and simpler migration from legacy ST7 designs - making it optimal for cost-sensitive, long-lifecycle embedded controllers where update reliability outweighs raw speed.
Availability
ST7FOXK1T6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control units, energy meter front-ends, and motorized valve actuators requiring stable component supply across extended production lifecycles.
Supply support for ST7FOXK1T6 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, MEMS, and automotive ICs with over 45 years of industrial-grade design heritage.
The ST7 family was engineered for cost-effective, robust 8-bit control in resource-constrained embedded systems - emphasizing Flash flexibility, low-voltage operation, and mixed-signal integration for industrial and white-goods applications.
FAQ
What is the maximum operating frequency of the ST7FOXK1T6?
The ST7FOXK1T6 supports a maximum system clock frequency of 8 MHz, achievable either from its internal trimmable RC oscillator (factory-calibrated to ±1%) or an external crystal/resonator (1–8 MHz range). The CPU executes instructions at this clock rate with one cycle per instruction for most operations, delivering up to 8 MIPS performance.
Does the ST7FOXK1T6 support hardware debugging?
Yes, the ST7FOXK1T6 includes a Debug Module (DM) compatible with ST's ST-LINK and third-party ICE tools. It supports full-speed execution, breakpoint setting, register and memory inspection, and flash programming via the ICC (In-Circuit Communication) interface using only two pins (ICCLK and ICDAT).
Can the internal RC oscillator be calibrated for higher accuracy?
Yes, the internal 8 MHz RC oscillator can be fine-tuned using the RC Calibration Control/Status Register (RCC_CSR) and RC Control Registers (RCCRH/RCCRL). Users may adjust calibration values based on external reference measurements, achieving ±0.5% accuracy under stable temperature conditions.
Is the ST7FOXK1T6 RoHS compliant and qualified for industrial temperature range?
Yes, the ST7FOXK1T6 is RoHS-compliant and specified for operation across the industrial temperature range of –40 °C to +85 °C. It meets JEDEC JESD22-A108 reliability standards and carries ST's standard 10-year longevity commitment for industrial-grade microcontrollers.
ST7FOXK1T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- ST7
- Packaging:
- Tray
- 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:
- Surface Mount
- Supplier Device Package:
ST7FOXK1T6 FAQ
1.How can I place an order for ST7FOXK1T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FOXK1T6 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 ST7FOXK1T6 reliable?
The price and inventory of ST7FOXK1T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FOXK1T6 is usually 5 days.
3.What payment methods are accepted for ST7FOXK1T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FOXK1T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FOXK1T6?
ST7FOXK1T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FOXK1T6 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 ST7FOXK1T6?
For technical support, including ST7FOXK1T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FOXK1T6 requirements.
6.How does Aetrix verify that ST7FOXK1T6 is sourced from the original manufacturer or authorized distributors?
All ST7FOXK1T6 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 ST7FOXK1T6 meets industry standards.
7.What is the process for return or replacement of ST7FOXK1T6?
All ST7FOXK1T6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FOXK1T6, 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 ST7FOXK1T6 part is unused and in its original packaging.
Return procedure for ST7FOXK1T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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