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STMicroelectronics ST7FLITEUS5M6
- Part No.:
- ST7FLITEUS5M6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ST7FLITEUS5M6.pdf
- Description:
- IC MCU 8BIT 1KB FLASH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,064
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Product details
Overview
ST7FLITEUS5M6 from STMicroelectronics is an 8-bit Flash microcontroller with integrated 10-bit ADC, dual timers (8-bit Lite Timer with watchdog and 12-bit auto-reload timer with PWM), 1 KB Flash, 128 bytes RAM, and five power-saving modes. It operates from 2.4–3.3 V at 4 MHz or 3.3–5.5 V at 8 MHz, featuring internal trimmable 8 MHz RC oscillator and 3-level low-voltage supervisor - used in battery-powered sensor nodes and industrial control interfaces.
For engineers reviewing the ST7FLITEUS5M6 datasheet, ST7FLITEUS5M6 pinout, ST7FLITEUS5M6 application, or ST7FLITEUS5M6 equivalent, key selection criteria include single-voltage Flash programming (ICP/IAP), high-sink I/O capability (5 lines), 10-bit ADC with 5 input channels, and support for Halt/Wait/Slow low-power modes in compact SO8 packaging.
Technical Context
This MCU implements the ST7 8-bit CISC core with 63 instructions, 17 addressing modes, and illegal opcode detection. Its clock system integrates a factory-trimmed 8 MHz RC oscillator with software-adjustable prescaler and auxiliary voltage detector (AVD) for supply monitoring.
The peripheral set includes a Lite Timer (LT) supporting watchdog, real-time base, and input capture; and a 12-bit auto-reload timer (AT) with output compare and PWM generation. The 10-bit ADC uses VDD as reference and supports up to 5 external analog inputs with dedicated interrupt vector.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ST7 8-bit CISC CPU with 63 instructions and 17 addressing modes - enables compact firmware and deterministic timing for real-time control loops. |
| Flash Memory | 1 Kbytes single-voltage Flash with readout protection, ICP, and IAP - allows field firmware updates without external programmer or voltage cycling. |
| RAM Size | 128 bytes of on-chip RAM (64 bytes usable as stack) - sufficient for small embedded applications with minimal variable footprint. |
| ADC Resolution | 10-bit SAR ADC with 0–VDD range and 5 input channels - delivers ±1 LSB INL/DNL for precision analog sensing in cost-sensitive systems. |
| CPU Frequency | Up to 8 MHz via internal RC oscillator (trimmable) or external clock - supports real-time response with sub-125 ns instruction cycle at max speed. |
| Supply Voltage | 2.4–3.3 V @ 4 MHz or 3.3–5.5 V @ 8 MHz - enables flexible power rail design across battery and line-powered applications. |
| Operating Temp | -40 to +85 °C - qualified for industrial ambient environments without derating. |
Pinout & Package
ST7FLITEUS5M6 is housed in an SO8 (Small Outline 8-pin) package with 150 mil body width, JEDEC MS-012AC compliant, and surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary positive supply rail (2.4–5.5 V); powers core, peripherals, and I/O buffers. |
| VSS | Ground | Digital ground reference; must be low-impedance connection for stable operation. |
| PA0–PA4 | Multi-function I/O | 5 bidirectional pins supporting GPIO, ADC inputs, timer capture, and external interrupts. |
| PA5 | Dedicated output | Single-purpose output line - not configurable as input or alternate function. |
| PA6–PA7 | Alternate function I/O | Support timer output compare, PWM, clock output, and system reset functions. |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; triggers full hardware reset on falling edge. |
Key Features
| Feature | Design Value |
|---|---|
| Single-voltage Flash programming | Enables in-circuit (ICP) and in-application (IAP) reprogramming using standard VDD - eliminates need for high-voltage programming circuitry. |
| 5 high-sink I/O lines | Each capable of sinking ≥20 mA - directly drives LEDs, relays, or logic inputs without external drivers in space-constrained designs. |
| 3-level low-voltage supervisor (LVD) | Detects brown-out at 2.3 V, 2.7 V, and 3.1 V thresholds - ensures safe shutdown or reset before logic corruption occurs. |
| Auto-wakeup from Halt mode | Configurable wake-up sources include external interrupt, timer overflow, or ADC conversion complete - extends battery life in periodic-sensing applications. |
| 10-bit ADC with internal reference | Uses VDD as reference; no external reference required - reduces BOM count and layout complexity for basic analog measurement. |
Applications
| Industrial Sensor Interface | Smart Meter Front-End |
|---|---|
Use Scenario: Monitoring temperature, pressure, or current in DIN-rail mounted sensors with RS-485 interface. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, digital I/O for relay control, and UART communication timing. Use Value: Integrated 10-bit ADC and 5 high-sink outputs eliminate external signal conditioning and driver ICs, reducing PCB area by ~35%. |
Use Scenario: Pulse counting and tamper detection in residential electricity meters with optical isolation. IC Role / Device Role / Timing Role: Low-power event processor capturing meter pulses via external interrupt and logging timestamps using Lite Timer. Use Value: Auto-wakeup from Halt mode on pulse edge cuts average current to <2 µA - extends lithium primary battery life beyond 10 years. |
| Portable Medical Device | Home Appliance Control Panel |
Use Scenario: Battery-powered blood glucose monitor with LCD backlight and button interface. IC Role / Device Role / Timing Role: System manager handling button debouncing, ADC conversion of test strip voltage, and PWM-controlled LED backlight dimming. Use Value: Dual timers enable simultaneous PWM backlight control and precise ADC sampling intervals - avoids timing conflicts in resource-limited firmware. |
Use Scenario: Washing machine control board managing motor phase control, water level sensing, and user interface. IC Role / Device Role / Timing Role: Secondary controller coordinating ADC-based water level feedback and 12-bit timer-driven triac firing angles. Use Value: 12-bit auto-reload timer provides 0.1° phase resolution at 50 Hz - improves motor torque consistency and energy efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit Flash MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S003F3P6 | Enhanced ST8 core, 8 KB Flash, 1 KB RAM, 10-bit ADC, 2x 16-bit timers, higher clock (16 MHz), but no AVD or LVD levels. | Requires external brown-out detection; better suited for applications needing larger code space and faster execution. | Select when firmware size exceeds 1 KB or when >8 MHz CPU performance is required - not drop-in due to different register map and interrupt vectors. |
| PIC16F684-I/P | 8-bit PIC core, 3.5 KB Flash, 128 bytes RAM, 10-bit ADC (4 ch), single 8-bit timer, no IAP, 2.0–5.5 V operation. | Lacks auto-wakeup from sleep and programmable LVD - less suitable for ultra-low-power intermittent sensing. | Choose for legacy PIC toolchain compatibility or where IAP and multi-level voltage supervision are non-critical. |
Compared with STM8S003F3P6 and PIC16F684-I/P, ST7FLITEUS5M6 offers unique value in single-voltage IAP, 3-level LVD, and integrated auto-wakeup - making it optimal for cost-sensitive, battery-operated devices requiring robust power management and field-upgradable firmware.
Availability
ST7FLITEUS5M6 is available at Aetrix Electronics and suitable for industrial sensor interfaces, smart meter front-ends, and portable medical devices requiring stable component supply and long-term lifecycle support.
Supply support for ST7FLITEUS5M6 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 management ICs, and sensors for industrial, automotive, and consumer markets.
ST7LITEUS series targets ultra-low-cost, low-pin-count embedded control - optimized for applications where minimal footprint, single-supply Flash programming, and integrated analog peripherals reduce system complexity.
FAQ
Is ST7FLITEUS5M6 still in active production?
No - ST7FLITEUS5M6 is marked as Obsolete by STMicroelectronics per official documentation. However, Aetrix Electronics maintains legacy inventory with full traceability and offers extended supply support including last-time buy coordination and cross-reference guidance for migration paths.
What development tools are supported for ST7FLITEUS5M6?
ST's STVP (ST Visual Programmer) and STVD (ST Visual Develop) IDE support this device. Hardware tools include the ST-LINK/V2 debugger (with adapter) and the ST7 Starter Kit (part number ST7SK). All tools are compatible with Windows and provide full ICP/IAP, debug, and option byte configuration.
Can ST7FLITEUS5M6 operate from a single 3.0 V coin cell?
Yes - it operates down to 2.4 V at 4 MHz, making it compatible with CR2032 (nominal 3.0 V, end-of-life ~2.5 V). Its five low-power modes, including Halt with auto-wakeup, enable average currents below 5 µA in duty-cycled sensing applications.
Does ST7FLITEUS5M6 support ISP without external high voltage?
Yes - it supports In-Circuit Programming (ICP) using only VDD (no VPP required). Programming is performed via the SWIM (Single Wire Interface Module) protocol using two pins (SWIM and RST), enabling field updates through a simple 2-wire interface.
ST7FLITEUS5M6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- ST7
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 5
- Program Memory Size:
- 1KB (1K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 5x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST7FLITEUS5M6 FAQ
1.How can I place an order for ST7FLITEUS5M6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FLITEUS5M6 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 ST7FLITEUS5M6 reliable?
The price and inventory of ST7FLITEUS5M6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FLITEUS5M6 is usually 5 days.
3.What payment methods are accepted for ST7FLITEUS5M6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FLITEUS5M6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FLITEUS5M6?
ST7FLITEUS5M6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FLITEUS5M6 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 ST7FLITEUS5M6?
For technical support, including ST7FLITEUS5M6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FLITEUS5M6 requirements.
6.How does Aetrix verify that ST7FLITEUS5M6 is sourced from the original manufacturer or authorized distributors?
All ST7FLITEUS5M6 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 ST7FLITEUS5M6 meets industry standards.
7.What is the process for return or replacement of ST7FLITEUS5M6?
All ST7FLITEUS5M6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FLITEUS5M6, 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 ST7FLITEUS5M6 part is unused and in its original packaging.
Return procedure for ST7FLITEUS5M6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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