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

STMicroelectronics ST7FLIT19BY0B6

Name: ST7FLIT19BY0B6
Brand: STMicroelectronics
SKU: ST7FLIT19BY0B6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST7FLIT19BY0B6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: ST7FLIT19BY0B6.pdf

Description:: IC MCU 8BIT 2KB FLASH 16DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ST7FLIT19BY0B6 from STMicroelectronics is an 8-bit Flash microcontroller with 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 operation and mixed-signal control.

For engineers reviewing the ST7FLIT19BY0B6 datasheet, ST7FLIT19BY0B6 pinout, ST7FLIT19BY0B6 application, or ST7FLIT19BY0B6 equivalent, key selection criteria include its 2.7–5.5 V operating range, 8 MHz max CPU frequency (with PLL x4/x8), 17 I/O lines (7 high-sink), 5 timer modules, and QFN20/SO20/DIP20 package compatibility for space-constrained embedded designs.

Technical Context

The ST7FLIT19BY0B6 implements an enhanced ST7 8-bit core with 63 instructions, 17 addressing modes, and hardware 8×8 unsigned multiply. Its clock system integrates a factory-trimmed 1% internal RC oscillator, optional PLL (x4/x8), and external crystal/ceramic or clock input support up to 16 MHz.

Peripheral architecture includes two independent 12-bit auto-reload timers (AT4) delivering four PWM outputs, input capture, and pulse generation; one Lite Timer with watchdog capability; SPI master/slave interface; and a 10-bit ADC with programmable gain op-amp and 7-channel analog multiplexer - all accessible via memory-mapped registers at fixed addresses (e.g., LTCSR2 at 0008h, ATCSR at 000Dh).

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	ST7 8-bit CPU with 63 instructions, 17 addressing modes, and hardware 8×8 unsigned multiply - enables compact, deterministic firmware for real-time control loops.
Flash Memory	4 Kbytes XFlash with ICP/IAP, 10K write/erase cycles, 20-year data retention at 55°C - supports field firmware updates without external programmer.
Data EEPROM	128 bytes with read-out protection, 300K write/erase cycles, 20-year data retention at 55°C - stores calibration constants or configuration parameters across power cycles.
ADC	10-bit SAR ADC with 7 input channels, integrated op-amp, and dual-range precision (13-bit for 0–430 mV, 10-bit for 430 mV–5 V @ 5 V VDD) - enables direct sensing of low-level transducer signals.
Timers	Two 12-bit auto-reload timers (AT4) with 4 PWM outputs, input capture, output compare, and pulse functions - drives motor control, LED dimming, or timing-critical event generation.
Power Management	Five low-power modes (Halt, Active-Halt, Auto Wake-up, Wait, Slow); enhanced LVD + AVD with interrupt - extends battery life in portable instrumentation while ensuring safe shutdown during brownout.
I/O Capability	17 multifunctional bidirectional I/O lines, including 7 high-sink (20 mA) outputs - directly drives LEDs, relays, or logic-level MOSFETs without external buffers.

Pinout & Package

ST7FLIT19BY0B6 is available in QFN20 (4 × 4 mm, 0.5 mm pitch), SO20 (300 mil), and DIP20 packages. Pin functions are identical across packages except for physical layout; QFN20 uses exposed thermal pad (VSS-connected) for improved thermal performance in high-duty-cycle applications.

Pin/Terminal	Circuit Role	Design Meaning
VDD / VSS	Main power supply / Ground	Must connect all VDD/VSS pins; decoupling capacitor (100 nF) required within 5 mm of each VDD pin for stable operation.
RESET	Active-low reset input	Non-maskable interrupt trigger; internal pull-up active during reset - requires external RC network for reliable power-on reset timing.
PA0–PA7	Port A bidirectional I/O	PA0–PA2, PA4–PA5 support high-sink (20 mA) PWM outputs; PA1/PA0 provide input capture for precise edge timing measurement.
PB0–PB6	Port B bidirectional I/O	PB0–PB4 serve as ADC inputs (AIN0–AIN4), SPI signals (MOSI/MISO/SCK/SS), and analog comparator inputs - shared function routing requires software configuration at startup.
PC0/PC1	Oscillator input/output	Supports crystal (1–8 MHz), ceramic resonator, or external clock; PC0 accepts CLKIN up to 16 MHz for PLL multiplication to 4/8 MHz system clock.
COMPOUT / COMPIN±	Analog comparator output / inputs	Comparator output on PA7; differential inputs on PB4 (COMPIN−) and PB0 (COMPIN+) - enables zero-crossing detection or windowed voltage monitoring.

Key Features

Feature	Design Value
In-Circuit Programming (ICP)	Enables full Flash reprogramming via ICCCLK/ICCDATA pins without removing MCU from PCB - reduces production test time and supports post-deployment updates.
Auto-reload Timer with 32-MHz Input Clock	Internal 32-MHz clock source dedicated to AT4 timers - achieves 31.25 ns resolution for high-precision PWM or pulse-width measurement without consuming CPU cycles.
Integrated Op-Amp in ADC Path	Programmable gain amplifier before ADC input - eliminates need for external signal conditioning when interfacing with low-output sensors (e.g., thermocouples, strain gauges).
Enhanced Low-Voltage Supervisor (LVD)	Dual-threshold detection (2.7 V / 3.3 V) with interrupt capability - triggers graceful state save before brownout-induced reset, preserving data integrity in unstable power environments.
Debug Module (DM)	On-chip hardware debug interface compliant with ST7 ICC protocol - supports breakpoints, single-stepping, and register inspection during development without external JTAG adapter.

Applications

Industrial Sensor Node

Smart Thermostat Control

Use Scenario: Standalone temperature/humidity sensor with local display and wireless telemetry.

IC Role / Device Role / Timing Role: Central controller managing ADC sampling, PWM-driven backlight, SPI communication with RF module, and low-power sleep/wake scheduling.

Use Value: Integrated 10-bit ADC with op-amp eliminates external signal conditioning; 5 power-saving modes extend battery life to >2 years on CR2032.

Use Scenario: Residential HVAC controller with touch interface, relay drivers, and ambient light sensing.

IC Role / Device Role / Timing Role: Real-time system orchestrator handling button debouncing, PWM fan speed control, ADC-based light level adjustment, and SPI-driven LCD refresh.

Use Value: 7 high-sink I/O lines directly drive relays and LEDs; dual auto-reload timers generate synchronized PWM for fan and backlight without CPU overhead.

Portable Medical Monitor

Motorized Actuator Controller

Use Scenario: Battery-powered pulse oximeter with analog front-end and OLED display.

IC Role / Device Role / Timing Role: Signal acquisition hub digitizing photodiode outputs via ADC, performing basic saturation calculation, and driving display via SPI.

Use Value: 13-bit precision mode (0–430 mV) captures weak photoplethysmogram signals; internal 1% RC oscillator ensures timing stability without external crystal cost/area.

Use Scenario: Linear actuator with position feedback, current limiting, and direction control.

IC Role / Device Role / Timing Role: Closed-loop motion controller using ADC for current sensing, PWM for H-bridge drive, and input capture for quadrature encoder decoding.

Use Value: AT4 timers provide hardware quadrature decoding and PWM dead-time insertion; analog comparator monitors overcurrent via shunt voltage threshold.

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	32 MHz max CPU, 8 KB Flash, no integrated op-amp, higher peripheral count (CAN, USART), but lacks analog comparator.	Better suited for communication-heavy designs; less optimal for low-noise analog sensing due to missing op-amp and lower ADC resolution consistency.	Select when UART/CAN connectivity is required and analog signal chain uses external amplification.
EFM8BB10F8G-A-QSOP24	Silicon Labs 8051 core, 8 KB Flash, 12-bit ADC, 2× comparators, but no integrated op-amp and only 2 PWM channels.	Stronger digital I/O flexibility and faster ADC sampling; weaker for analog-intensive control where op-amp buffering is critical.	Choose for high-speed digital I/O or multi-comparator monitoring, not for low-level sensor amplification.

Compared with STM8S003F3P6 and EFM8BB10F8G-A-QSOP24, the ST7FLIT19BY0B6 uniquely combines integrated op-amp, analog comparator, and high-sink I/O in a legacy-compatible ST7 architecture - making it optimal for cost-sensitive, analog-centric embedded systems where minimal BOM count and proven reliability are prioritized over raw speed or protocol diversity.

Availability

ST7FLIT19BY0B6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat control, portable medical monitors, and motorized actuator controllers requiring stable component supply and long-term manufacturing continuity.

Supply support for ST7FLIT19BY0B6 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 delivers cost-optimized 8-bit MCUs targeting resource-constrained embedded applications requiring Flash programmability, analog integration, and ultra-low-power operation - especially where legacy code portability and long-lifecycle support are essential.

FAQ

What is the maximum operating frequency of the ST7FLIT19BY0B6?

The ST7FLIT19BY0B6 achieves up to 8 MHz CPU frequency: either from an external 16 MHz oscillator divided by 2, or from its internal 1% RC oscillator (1 MHz) multiplied by PLL x4 or x8. The 32-MHz input clock is reserved exclusively for the auto-reload timers and does not feed the CPU core.

Does the ST7FLIT19BY0B6 support in-application programming (IAP)?

Yes, the ST7FLIT19BY0B6 supports full In-Application Programming of its 4 KB XFlash memory. Firmware can reprogram non-active Flash sectors while executing from another sector, enabling secure over-the-air updates and dynamic parameter storage without halting system operation.

How many ADC input channels does the ST7FLIT19BY0B6 have, and what is their voltage range?

The ST7FLIT19BY0B6 features 7 ADC input channels (AIN0–AIN6) mapped to PB0–PB6 pins. At 5 V VDD, it provides 13-bit effective resolution for 0–430 mV inputs and 10-bit resolution for 430 mV–5 V inputs - achieved via internal programmable gain op-amp and dual-range conversion logic.

Can the ST7FLIT19BY0B6 operate from a single-cell lithium battery?

Yes, the ST7FLIT19BY0B6 operates from 2.7 V to 5.5 V, covering the full discharge curve of a single Li-ion/Li-polymer cell (4.2 V down to ~2.8 V). Its enhanced low-voltage supervisor triggers interrupt-based shutdown at 2.7 V, allowing safe data preservation before brownout reset.

ST7FLIT19BY0B6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 16-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:: SPI

Peripherals:: LVD, POR, PWM, WDT

Number of I/O:: 11

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

Program Memory Type:: FLASH

EEPROM Size:: 128 x 8

RAM Size:: 256 x 8

Voltage - Supply (Vcc/Vdd):: 2.7V ~ 5.5V

Data Converters:: A/D 5x10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:

ST7FLIT19BY0B6 FAQ

1.How can I place an order for ST7FLIT19BY0B6 through Aetrix?

Please submit a Request for Quotation (RFQ) for ST7FLIT19BY0B6 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 ST7FLIT19BY0B6 reliable?

The price and inventory of ST7FLIT19BY0B6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FLIT19BY0B6 is usually 5 days.

3.What payment methods are accepted for ST7FLIT19BY0B6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FLIT19BY0B6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST7FLIT19BY0B6?

ST7FLIT19BY0B6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST7FLIT19BY0B6 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 ST7FLIT19BY0B6?

For technical support, including ST7FLIT19BY0B6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FLIT19BY0B6 requirements.

6.How does Aetrix verify that ST7FLIT19BY0B6 is sourced from the original manufacturer or authorized distributors?

All ST7FLIT19BY0B6 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 ST7FLIT19BY0B6 meets industry standards.

7.What is the process for return or replacement of ST7FLIT19BY0B6?

All ST7FLIT19BY0B6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FLIT19BY0B6, 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 ST7FLIT19BY0B6 part is unused and in its original packaging.

Return procedure for ST7FLIT19BY0B6:

1.Submit a request within 90 days.

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

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