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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics ST7FLIT15BM6TR

Name: ST7FLIT15BM6TR
Brand: STMicroelectronics
SKU: ST7FLIT15BM6TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST7FLIT15BM6TR

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: ST7FLIT15BM6TR.pdf

Description:: IC MCU 8BIT 2KB FLASH 20SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ST7FLIT15BM6TR from STMicroelectronics is an 8-bit Flash microcontroller featuring 4 KB XFlash program memory, 256 bytes RAM, 128 bytes data EEPROM, 10-bit ADC with integrated op-amp, dual 12-bit auto-reload timers (4 PWM outputs), SPI interface, and analog comparator - deployed in industrial sensor nodes requiring low-power, mixed-signal control with on-chip precision timing and signal conditioning.

For engineers reviewing the ST7FLIT15BM6TR datasheet, ST7FLIT15BM6TR pinout, ST7FLIT15BM6TR application, or ST7FLIT15BM6TR equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and actionable alternative part guidance - all grounded in the official ST7LITE1xB reference manual (Rev 6, June 2008) and package-specific mechanical data.

Technical Context

The ST7FLIT15BM6TR implements an enhanced ST7 8-bit core with 63 instructions, true bit manipulation, and 17 addressing modes. Its clock system integrates a factory-trimmed 1% internal RC oscillator, optional x4/x8 PLL for 4/8 MHz operation, and external crystal/ceramic or clock input support up to 16 MHz.

Peripherals include two independent 12-bit auto-reload timers (AT4 and AT2) delivering four PWM outputs, input capture, output compare, and pulse generation; a dedicated watchdog timer; and a 10-bit ADC with programmable gain op-amp supporting 7 analog inputs and dual-range conversion (13-bit precision for 0–430 mV, 10-bit for 430 mV–5 V at VDD = 5 V).

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	ST7 8-bit CPU with 63 instructions, 17 addressing modes, and 8×8 unsigned multiply - enables compact, deterministic firmware for resource-constrained embedded control.
Flash Memory	4 KB single-voltage XFlash with ICP/IAP, 10K write/erase cycles, 20-year data retention at 55°C - supports field firmware updates without external programmers.
Data EEPROM	128 bytes with read-out protection, 300K write/erase cycles, 20-year data retention at 55°C - stores calibration constants or runtime configuration persistently.
ADC Resolution	10-bit SAR ADC with 7-channel multiplexer and integrated op-amp; 13-bit effective resolution for low-voltage signals (0–430 mV) - eliminates need for external signal conditioning in sensor front-ends.
Timers	Dual 12-bit auto-reload timers (AT4/AT2) + one 8-bit Lite Timer with watchdog - provides four independent PWM outputs, input capture, and precise timing for motor control or power regulation.
Supply Range	2.7 V to 5.5 V operating voltage - compatible with both 3.3 V and 5 V systems without level-shifting.
Temperature Range	−40°C to +85°C - qualified for industrial ambient environments including factory automation and building controls.

Pinout & Package

ST7FLIT15BM6TR is housed in a 20-pin SOIC (SO20 300 mil) package with 0.6 mm lead pitch and standard JEDEC MS-013AC dimensions. All pins are CMOS-compatible with configurable pull-up, interrupt, analog, or high-sink (20 mA) output modes.

Pin/Terminal	Circuit Role	Design Meaning
VDD / VSS	Power supply rails	Mandatory connection to 2.7–5.5 V main supply and ground; decoupling required per datasheet layout guidelines.
PA0–PA7 (HS)	Port A I/O with high-sink capability	Eight bidirectional lines; PA0–PA5 support PWM/timer functions (ATPWM0–3, ATIC, LTIC); PA6/PA7 provide MCO, BREAK, COMPOUT - critical for timing distribution and fault signaling.
PB0–PB6	Port B analog/digital I/O	Seven lines with ADC input (AIN0–AIN6), SPI (MOSI/MISO/SCK/SS), and comparator inputs (COMPIN+/−) - enables direct sensor interfacing and serial communication without external components.
PC0/PC1	Oscillator interface	Crystal/resonator connections (OSC1/OSC2) or external clock input (CLKIN) - determines system clock source and stability; PC0 also serves as CLKIN when external clock used.
RESET	Active-low reset input	Asynchronous non-maskable reset with internal pull-up; triggers full device initialization and vector fetch from FFFCh - essential for safe power-up and brownout recovery.

Key Features

Feature	Design Value
In-Circuit Programming (ICP)	Enables firmware updates via ICC interface using only RESET, ICCCLK, and ICCDATA pins - eliminates need for dedicated programming hardware during production or field service.
Auto Wake-up from Halt	Configurable timer or external interrupt can resume execution from ultra-low-power Halt mode in <1 µs - ideal for battery-powered wake-on-event applications like smoke detectors.
Integrated Analog Comparator	Comparator with programmable hysteresis and interrupt capability monitors analog thresholds directly - replaces discrete comparator circuits in overvoltage/undervoltage detection.
High-Sink I/O (20 mA)	PA0–PA7 and PB0–PB6 support 20 mA sink current per pin - drives LEDs, small relays, or logic-level MOSFET gates without external drivers.
Five Power Saving Modes	Halt, Active-Halt, Auto Wake-up, Wait, and Slow modes reduce current consumption to <1 µA (Halt) or ~200 µA (Wait) - extends battery life in portable instrumentation.

Applications

Industrial Sensor Node

Smart Thermostat Controller

Use Scenario: Compact environmental monitoring unit measuring temperature, humidity, and air quality with local display and wired RS-485 output.

IC Role / Device Role / Timing Role: Central controller managing ADC sampling, PWM fan speed control, SPI-driven display interface, and real-time clock synchronization via internal timers.

Use Value: Integrated 10-bit ADC with op-amp and 4-channel PWM eliminates external signal chain components, reducing BOM count by ≥3 ICs and PCB area by 25%.

Use Scenario: Residential HVAC control panel with touch interface, relay drivers, and local temperature compensation algorithms.

IC Role / Device Role / Timing Role: Main MCU executing PID loop, driving 4x relays via high-sink I/O, reading thermistor network through ADC, and generating precise 1 Hz timing for display refresh.

Use Value: 20 mA high-sink outputs directly drive relay coils; built-in LVD/AVD ensures safe shutdown during brownout - avoids external supervisor IC and saves 2 mm² board space.

Programmable Logic Relay

DC Motor Speed Controller

Use Scenario: DIN-rail mounted logic module accepting digital inputs, executing user-defined Boolean logic, and switching up to 8 loads.

IC Role / Device Role / Timing Role: Real-time sequencer using Lite Timer for input debouncing, auto-reload timers for output pulse-width modulation, and SPI for configuration upload.

Use Value: Dual 12-bit auto-reload timers deliver independent 16-bit PWM with 0.1% duty resolution - enables accurate timing of solenoid actuation sequences without FPGA or external timer IC.

Use Scenario: Closed-loop brushless DC motor driver for conveyor belt systems, requiring speed feedback, current limiting, and thermal monitoring.

IC Role / Device Role / Timing Role: System coordinator acquiring hall sensor inputs (via GPIO), processing ADC current samples, generating 4-phase PWM via AT4 timer, and triggering fault interrupts on overtemperature.

Use Value: On-chip analog comparator with interrupt capability detects overcurrent events in <2 µs - faster than external comparators with propagation delay, enabling immediate PWM disable and preventing MOSFET failure.

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), 8 KB Flash, no integrated op-amp, no analog comparator, enhanced debug (SWIM), different pinout.	Better suited for compute-intensive tasks but lacks analog front-end integration - requires external op-amp for sub-500 mV signal conditioning.	Select when prioritizing code density and debug flexibility over analog signal chain integration.
ST7FLITE29F2M6	Same ST7 core, 8 KB Flash, 384 bytes RAM, identical peripherals including op-amp and comparator, but QFN32 package and extended temperature range (−40°C to +125°C).	Supports higher ambient temperatures and larger firmware footprints - suitable for under-hood automotive or high-heat industrial enclosures.	Select when needing extended temperature rating or >4 KB program memory while retaining identical analog subsystem behavior.

Compared with STM8S003F3P6, ST7FLIT15BM6TR offers superior analog integration at lower cost for sensor-centric designs; versus ST7FLITE29F2M6, it trades memory and temperature margin for smaller footprint and lower unit price in commercial-grade applications.

Availability

ST7FLIT15BM6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, programmable logic relays, and DC motor speed controllers requiring stable component supply across multi-year production cycles.

Supply support for ST7FLIT15BM6TR 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, sensors, and analog devices for industrial, automotive, and consumer markets.

The ST7LITE1xB product line targets cost-sensitive, low-power embedded control applications where integrated analog peripherals, Flash programmability, and robust industrial qualification are essential - exemplified by the ST7FLIT15BM6TR's optimized balance of mixed-signal capability and minimal footprint.

FAQ

What is the maximum operating frequency of the ST7FLIT15BM6TR?

The ST7FLIT15BM6TR achieves up to 8 MHz CPU frequency: using the internal 1% RC oscillator (1 MHz) with x8 PLL, or with external crystal/resonator up to 16 MHz. The internal 32-MHz input clock feeds the auto-reload timer independently but does not drive the CPU core.

Does the ST7FLIT15BM6TR support in-application programming (IAP)?

Yes, the ST7FLIT15BM6TR supports full In-Application Programming of its 4 KB XFlash memory. Firmware can reprogram designated Flash sectors while executing from other regions, enabling secure over-the-air updates and dynamic parameter storage without halting system operation.

How many analog input channels does the integrated ADC support?

The ST7FLIT15BM6TR's 10-bit ADC supports seven analog input channels (AIN0–AIN6) mapped to PB0–PB6 pins. It features a built-in programmable-gain op-amp and dual-range conversion: 13-bit effective resolution for signals up to 430 mV, and 10-bit resolution for the full 0–5 V range at VDD = 5 V.

Is the ST7FLIT15BM6TR pin-compatible with other ST7LITE1xB variants?

No - ST7FLIT15BM6TR uses a 20-pin SOIC package with specific pin assignments for PWM, ADC, and comparator functions. While functionally aligned with ST7LITE15B, it is not pin-compatible with 16-pin SO/DIP variants (e.g., ST7FLITE15B1M6) due to differing pin counts and peripheral mappings per package type.

ST7FLIT15BM6TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Series:: ST7

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Core Processor:: ST7

Core Size:: 8-Bit

Speed:: 8MHz

Connectivity:: SPI

Peripherals:: LVD, POR, PWM, WDT

Number of I/O:: 17

Program Memory Size:: 2KB (2K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 256 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:

ST7FLIT15BM6TR FAQ

1.How can I place an order for ST7FLIT15BM6TR through Aetrix?

Please submit a Request for Quotation (RFQ) for ST7FLIT15BM6TR 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 ST7FLIT15BM6TR reliable?

The price and inventory of ST7FLIT15BM6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FLIT15BM6TR is usually 5 days.

3.What payment methods are accepted for ST7FLIT15BM6TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FLIT15BM6TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST7FLIT15BM6TR?

ST7FLIT15BM6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST7FLIT15BM6TR 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 ST7FLIT15BM6TR?

For technical support, including ST7FLIT15BM6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FLIT15BM6TR requirements.

6.How does Aetrix verify that ST7FLIT15BM6TR is sourced from the original manufacturer or authorized distributors?

All ST7FLIT15BM6TR 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 ST7FLIT15BM6TR meets industry standards.

7.What is the process for return or replacement of ST7FLIT15BM6TR?

All ST7FLIT15BM6TR units undergo pre-shipment inspection (PSI). If there is an issue with ST7FLIT15BM6TR, 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 ST7FLIT15BM6TR part is unused and in its original packaging.

Return procedure for ST7FLIT15BM6TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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