My Inquiry
My Account
STMicroelectronics ST7FOXF1B6
- Part No.:
- ST7FOXF1B6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
ST7FOXF1B6.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ST7FOXF1B6 from STMicroelectronics is an 8-bit Flash microcontroller with 4 KB XFlash program memory, 384 bytes RAM, integrated SPI/I²C interfaces, 10-bit ADC (up to 10 channels), six timers including dual 12-bit auto-reload timers with PWM and dead-time generation, and five power-saving modes. It operates from a single 2.7–5.5 V supply and targets embedded control in industrial sensors and low-power metering systems.
For engineers reviewing the ST7FOXF1B6 datasheet, ST7FOXF1B6 pinout, ST7FOXF1B6 application, or ST7FOXF1B6 equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and actionable alternative part guidance - all grounded in ST's official ST7FOXF1 documentation (Rev 4, Feb 2008).
Technical Context
The ST7FOXF1B6 implements an ST7 core with 63 basic instructions, 17 addressing modes, and hardware support for 8×8 unsigned multiply. Its clock system integrates a trimmable 8 MHz RC oscillator, auto-wakeup low-frequency oscillator, and external crystal/ceramic or clock input - enabling precise timing control across active and ultra-low-power modes.
Interrupt handling supports 13 vectors plus TRAP and RESET, with software-configurable priority via ISPR registers. Peripheral integration includes I²C multimaster mode, SPI master/slave operation, and a 10-bit ADC with configurable sampling rate and channel sequencing - all accessible without CPU intervention via dedicated peripheral control registers.
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 interrupt latency. |
| Flash Memory | 4 Kbytes XFlash with Read-Out Protection, 1K write/erase cycles, 20-year data retention at 55 °C - supports field firmware updates and secure code storage. |
| RAM | 384 bytes of on-chip SRAM - sufficient for real-time sensor buffering and control loop variables in standalone nodes. |
| ADC | 10-bit successive-approximation ADC with up to 10 input channels - provides adequate resolution for temperature, voltage, and current monitoring in industrial analog front-ends. |
| Timers | Dual 12-bit auto-reload timers (4 PWM outputs, dead-time insertion, one-pulse mode), dual 8-bit Lite timers, and one 16-bit timer - enables motor control, LED dimming, and precise event timing. |
| I/O Ports | Up to 24 multifunctional bidirectional I/Os, including 8 high-sink outputs (20 mA) - drives LEDs, relays, and logic-level peripherals directly without external buffers. |
| Supply Voltage | 2.7–5.5 V single supply - simplifies power design and enables direct battery or unregulated rail operation. |
Pinout & Package
LQFP32 package (7 × 7 mm, 0.8 mm pitch) with 32-pin quad flat lead frame - suitable for automated SMT assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 2.7–5.5 V supply input; decoupling capacitor required near pin for noise immunity. |
| VSS | GND reference | Digital ground return path; must be connected to low-impedance PCB plane. |
| PA0–PA7 | Port A I/O | Bidirectional port with alternate functions including ADC inputs, SPI MOSI/MISO, and I²C SDA/SCL. |
| PD0–PD7 | Port D I/O | Includes high-sink outputs (20 mA), external interrupt inputs, and timer capture/compare pins. |
| OSCIN/OSCOUT | Clock input/output | Connects to external crystal (1–8 MHz) or ceramic resonator; internal oscillator bypass option available. |
| RESET | Active-low reset | Asynchronous external reset input; triggers full system initialization and register reset. |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates while running - critical for remote device maintenance without halting operation. |
| Five power-saving modes | Halt, Active-Halt, Auto Wakeup from Halt, Wait, and Slow - reduces active current to 1.5 µA (Halt) and supports sub-second wake-up latency. |
| Low Voltage Detector (LVD) | Monitors VDD and triggers reset below programmable threshold (2.5–4.5 V) - prevents erratic behavior during brown-out conditions. |
| Dual 12-bit auto-reload timers | Support dead-time generation and enhanced one-pulse mode - essential for half-bridge gate driving and safety-critical timing. |
| I²C multimaster interface | Full-duplex slave/master operation with arbitration and clock stretching - allows seamless integration into multi-controller sensor networks. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Standalone temperature/humidity sensor with local display and wireless telemetry. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, SPI communication to RF transceiver, and I²C interface to EEPROM for calibration data. Use Value: Integrated 10-bit ADC and dual 12-bit timers eliminate external signal conditioning ICs and reduce BOM count by two components. |
Use Scenario: Residential electricity meter with pulse counting, tamper detection, and LCD driver. IC Role / Device Role / Timing Role: Primary MCU executing metrology algorithms, driving segmented LCD via GPIO, and logging events to Flash memory. Use Value: 4 KB XFlash with IAP enables over-the-air firmware patches for regulatory compliance updates without field technician visits. |
| Motor Control Interface | Home Appliance Controller |
Use Scenario: Brushless DC fan controller with speed regulation and thermal shutdown. IC Role / Device Role / Timing Role: PWM generator and ADC-based current sensing node interfacing with gate driver ICs. Use Value: Dead-time insertion and one-pulse mode in dual 12-bit timers ensure safe half-bridge switching and prevent shoot-through faults. |
Use Scenario: Washing machine main control board managing water valves, motor phases, and user interface. IC Role / Device Role / Timing Role: Real-time task scheduler coordinating motor sequencing, heater control, and button debounce via interrupt-driven I/O. Use Value: 24 I/Os with 8 high-sink outputs drive solenoids and LEDs directly, removing need for discrete transistor arrays. |
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 STM8 core, 8 KB Flash, higher clock (16 MHz), no XFlash endurance guarantee; lacks AWU oscillator. | Better performance for compute-intensive tasks but less suited for ultra-low-power wake-up scenarios requiring sub-µA retention. | Select when higher throughput and modern toolchain support outweigh legacy ST7 ecosystem compatibility. |
| EFM8BB10F8G-A-QSOP24 | Silicon Labs 8051-based MCU, 8 KB Flash, 512 B RAM, 12-bit ADC, lower active current (150 µA/MHz), USB interface. | Superior power efficiency in active mode and native USB connectivity - advantageous for PC-connected diagnostics tools. | Prefer for new designs needing USB HID or where energy-per-instruction metric dominates. |
Compared with STM8S003F3P6 and EFM8BB10F8G-A-QSOP24, the ST7FOXF1B6 offers proven long-term reliability in cost-sensitive industrial nodes, guaranteed Flash endurance for frequent field updates, and optimized low-power wake-up architecture - making it ideal for battery-operated sensor endpoints with infrequent but time-critical events.
Availability
ST7FOXF1B6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, motor control interfaces, and home appliance controllers requiring stable component supply and long-lifecycle support.
Supply support for ST7FOXF1B6 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The ST7 family was engineered for cost-effective, low-power embedded control in resource-constrained applications - emphasizing Flash flexibility, robust I/O drive capability, and deterministic real-time response in harsh environments.
FAQ
Does ST7FOXF1B6 support in-circuit debugging?
Yes, the ST7FOXF1B6 includes a Debug Module (DM) compatible with ST's ST-LINK and third-party ICE tools. It supports full-speed execution, breakpoint setting, register inspection, and memory read/write via SWIM (Single Wire Interface Module) using the dedicated SWIM pin - enabling non-intrusive firmware validation without requiring additional debug headers.
What is the maximum ADC conversion rate for ST7FOXF1B6?
The ST7FOXF1B6 ADC achieves up to 100 kSPS at 10-bit resolution under typical conditions (VDD = 5 V, fADC = 4 MHz). Conversion time is programmable via prescaler settings, and the module supports automatic channel scanning triggered by timer events - allowing synchronized sampling across multiple sensors without CPU overhead.
Can ST7FOXF1B6 operate from a 3.3 V supply with full peripheral functionality?
Yes, ST7FOXF1B6 is fully specified for operation from 2.7 V to 5.5 V. At 3.3 V, all peripherals - including SPI, I²C, ADC, and timers - retain full functionality and timing specifications per Section 12.3 of the datasheet. I/O pins remain 5 V tolerant on selected ports (PA/PD), enabling mixed-voltage interface design.
Is there hardware support for PWM dead-time insertion on ST7FOXF1B6?
Yes, the dual 12-bit auto-reload timers include dedicated dead-time generation logic. Each timer pair can produce complementary PWM outputs with programmable dead-time (1–255 clock cycles) inserted automatically between rising/falling edges - preventing simultaneous conduction in half-bridge topologies without software intervention.
ST7FOXF1B6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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:
- 16
- 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:
ST7FOXF1B6 FAQ
1.How can I place an order for ST7FOXF1B6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FOXF1B6 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 ST7FOXF1B6 reliable?
The price and inventory of ST7FOXF1B6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FOXF1B6 is usually 5 days.
3.What payment methods are accepted for ST7FOXF1B6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FOXF1B6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FOXF1B6?
ST7FOXF1B6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FOXF1B6 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 ST7FOXF1B6?
For technical support, including ST7FOXF1B6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FOXF1B6 requirements.
6.How does Aetrix verify that ST7FOXF1B6 is sourced from the original manufacturer or authorized distributors?
All ST7FOXF1B6 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 ST7FOXF1B6 meets industry standards.
7.What is the process for return or replacement of ST7FOXF1B6?
All ST7FOXF1B6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FOXF1B6, 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 ST7FOXF1B6 part is unused and in its original packaging.
Return procedure for ST7FOXF1B6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ST7FOXF1B6 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
