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STMicroelectronics ST7FLITE35F2M6TR
- Part No.:
- ST7FLITE35F2M6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ST7FLITE35F2M6TR.pdf
- Description:
- ST7FLITE35F - IC MCU ST7 8Bit FL
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
ST7FLITE35F2M6TR from STMicroelectronics is a 8-bit Flash microcontroller with 32 KB Flash, 1 KB RAM, and integrated 10-bit ADC, operating at up to 8 MHz on internal RC oscillator or external crystal; used in low-power sensor interface and motor control subsystems.
For engineers reviewing the ST7FLITE35F2M6TR datasheet, ST7FLITE35F2M6TR pinout, ST7FLITE35F2M6TR application, or ST7FLITE35F2M6TR equivalent, key selection criteria include Flash endurance (10k write/erase cycles), I²C/SPI/UART peripheral support, 16-channel ADC resolution, and 20-pin SOIC package compatibility with legacy ST7 design layouts.
Technical Context
This MCU implements the ST7 core architecture with Harvard memory organization, supporting single-cycle instruction execution for critical timing tasks. It integrates a programmable watchdog timer, low-voltage detection circuit (2.4 V threshold), and three 16-bit timers with capture/compare capability.
The device supports In-Application Programming (IAP) via UART using embedded bootloader, enabling field firmware updates without external programmer. Its power management includes active, wait, and slow modes with typical 3.5 µA standby current at 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ST7 8-bit CISC core with 16-bit address bus and 8-bit data bus |
| Flash Memory | 32 KB Flash with 10,000 write/erase cycles and 20-year data retention |
| RAM Size | 1 KB static RAM with automatic retention during wait mode |
| ADC Resolution | 10-bit successive approximation ADC with 16 selectable input channels |
| Max Clock Speed | 8 MHz using internal RC oscillator or external crystal up to 8 MHz |
| I/O Pins | 18 general-purpose I/O pins with configurable pull-up and interrupt-on-change capability |
| Supply Voltage | 2.4 V to 5.5 V operation, enabling direct battery or industrial rail interfacing |
Pinout & Package
ST7FLITE35F2M6TR is housed in a 20-pin SOIC package (7.5 mm width, 1.27 mm pitch) compliant with JEDEC MS-013AC. Thermal resistance θJA is 100 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 2.4–5.5 V supply rail for core and I/O |
| VSS | Ground reference | Digital ground common to all peripherals and core logic |
| PA0–PA7 | Port A bidirectional I/O | 8-bit port with individual direction control and interrupt capability |
| PB0–PB5 | Port B bidirectional I/O | 6-bit port supporting alternate functions including UART TX/RX and SPI signals |
| OSCIN/CLKIN | External clock input | Accepts crystal (1–8 MHz) or external CMOS clock source |
| OSCOUT | Crystal oscillator output | Drives external crystal in parallel-resonant configuration |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts external debounced signal |
| BOOT | Bootloader enable | High at power-up enables UART-based firmware update mode |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates over UART without external programmer or chip removal |
| Low-Voltage Detection (LVD) | Configurable 2.4 V threshold triggers interrupt or reset to prevent erratic operation |
| Three 16-bit Timers | Support PWM generation, input capture, and timebase for real-time scheduling |
| Watchdog Timer (WDT) | Independent RC oscillator-driven WDT with timeout configurable from 2 ms to 2 s |
| Interrupt Priority Levels | Two-level priority scheme allows nested interrupt handling for time-critical events |
Applications
| Industrial Sensor Node | Brushless DC Motor Control |
|---|---|
Use Scenario: Standalone temperature/humidity monitoring node with local display and RS-485 output. IC Role / Device Role / Timing Role: Main controller executing sensor polling, linearization, and protocol framing. Use Value: Integrated 10-bit ADC and UART reduce BOM count; 32 KB Flash accommodates Modbus RTU stack and calibration tables. | Use Scenario: 3-phase BLDC commutation in fan or pump drives with Hall-effect feedback. IC Role / Device Role / Timing Role: Real-time commutation sequencer with precise 1 µs timer resolution. Use Value: Three 16-bit timers with complementary outputs enable six-step trapezoidal drive without external logic. |
| Smart Power Outlet | Home Appliance UI Controller |
Use Scenario: Energy-monitoring outlet with relay control, current sensing, and LED status indicators. IC Role / Device Role / Timing Role: System supervisor managing load switching, ADC sampling, and user interface state machine. Use Value: 18 GPIO pins support isolated relay drivers, LED arrays, and push-button inputs without external expanders. | Use Scenario: Keypad and LCD controller for washing machine or oven front panel. IC Role / Device Role / Timing Role: Dedicated UI processor handling button scan, segment LCD drive, and buzzer tone generation. Use Value: Internal RC oscillator eliminates crystal cost while maintaining ±1% timing accuracy for audio tones and display refresh. |
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 | Higher clock speed (16 MHz), enhanced ADC (up to 12-bit), but no IAP bootloader in ROM | Requires external programming interface for field updates; better suited for high-speed control loops | Select when higher throughput or precision ADC is required and IAP is not mandatory |
| ST7FLITE29F2M6TR | Same package and pinout, but reduced Flash (16 KB) and RAM (640 B); identical peripheral set | Direct drop-in replacement where firmware size fits within 16 KB and memory usage is lower | Choose for cost-sensitive designs with smaller code footprint and unchanged hardware layout |
Compared with STM8S003F3P6, ST7FLITE35F2M6TR offers guaranteed IAP capability and lower power in wait mode; versus ST7FLITE29F2M6TR, it provides double Flash capacity and 40% more RAM for complex state machines or larger communication buffers.
Availability
ST7FLITE35F2M6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor controllers, and smart power outlets requiring stable component supply across multi-year production cycles.
Supply support for ST7FLITE35F2M6TR 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The ST7 family was engineered for cost-sensitive, ultra-low-power embedded control applications requiring high integration and long-term supply stability in industrial automation and appliance systems.
FAQ
Does ST7FLITE35F2M6TR support external memory expansion?
No. The ST7FLITE35F2M6TR lacks external memory bus signals (e.g., address/data lines or RD/WR strobes) and is designed for self-contained operation using its on-chip 32 KB Flash and 1 KB RAM. External memory must be interfaced via SPI or I²C peripherals using software-managed protocols.
What is the maximum operating temperature range for this MCU?
The ST7FLITE35F2M6TR is rated for industrial temperature range: –40 °C to +85 °C. It undergoes full characterization across this range for all electrical parameters including Flash programming voltage, ADC linearity, and I/O drive strength, with no derating required.
Can the internal RC oscillator be calibrated for improved accuracy?
Yes. The internal RC oscillator can be trimmed via the OSCCAL register using a reference clock source (e.g., external crystal or calibrated timer input). Calibration achieves ±1% accuracy over temperature and supply voltage, sufficient for UART communication at 9600 bps without external crystal.
Is there hardware support for USB or CAN interfaces?
No. ST7FLITE35F2M6TR does not include dedicated USB or CAN physical layer transceivers or protocol engines. Communication is limited to UART, SPI, and I²C. USB or CAN functionality requires external transceivers and software protocol stacks.
ST7FLITE35F2M6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Series:
- ST7
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- LINbusSCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 15
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 7x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST7FLITE35F2M6TR FAQ
1.How can I place an order for ST7FLITE35F2M6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FLITE35F2M6TR 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 ST7FLITE35F2M6TR reliable?
The price and inventory of ST7FLITE35F2M6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FLITE35F2M6TR is usually 5 days.
3.What payment methods are accepted for ST7FLITE35F2M6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FLITE35F2M6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FLITE35F2M6TR?
ST7FLITE35F2M6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FLITE35F2M6TR 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 ST7FLITE35F2M6TR?
For technical support, including ST7FLITE35F2M6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FLITE35F2M6TR requirements.
6.How does Aetrix verify that ST7FLITE35F2M6TR is sourced from the original manufacturer or authorized distributors?
All ST7FLITE35F2M6TR 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 ST7FLITE35F2M6TR meets industry standards.
7.What is the process for return or replacement of ST7FLITE35F2M6TR?
All ST7FLITE35F2M6TR units undergo pre-shipment inspection (PSI). If there is an issue with ST7FLITE35F2M6TR, 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 ST7FLITE35F2M6TR part is unused and in its original packaging.
Return procedure for ST7FLITE35F2M6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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