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STMicroelectronics ST7FLIT19BF0M3
- Part No.:
- ST7FLIT19BF0M3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ST7FLIT19BF0M3.pdf
- Description:
- IC MCU 8BIT 2KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,294
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Product details
Overview
ST7FLIT19BF0M3 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, mixed-signal control and on-the-fly firmware updates.
For engineers reviewing the ST7FLIT19BF0M3 datasheet, ST7FLIT19BF0M3 pinout, ST7FLIT19BF0M3 application, or ST7FLIT19BF0M3 equivalent, key selection criteria include its 20-pin SO package, 2.7–5.5 V operating range, 8 MHz max CPU frequency (with PLL x4/x8), 7-channel ADC with programmable gain, and high-sink (20 mA) I/O capability for direct LED/relay drive.
Technical Context
The ST7FLIT19BF0M3 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 crystal/ceramic resonator input, and a configurable PLL supporting 4 MHz or 8 MHz internal clocks from a 1 MHz base.
Peripheral integration includes two independent 12-bit auto-reload timers delivering four PWM outputs and input capture, one 8-bit Lite Timer with watchdog, SPI master/slave operation, and a 10-bit ADC with fixed-gain op-amp enabling precise low-voltage measurement (0–430 mV full-scale at 5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ST7 8-bit CPU with 63 instructions, 17 addressing modes, and hardware 8×8 multiply - enables compact, deterministic firmware for real-time 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 programmer. |
| ADC Resolution | 10-bit SAR ADC with 7 analog inputs and integrated op-amp - delivers 0–430 mV full-scale range at 13-bit effective precision for millivolt-level sensor signals. |
| PWM Outputs | 4 independent PWM channels from dual 12-bit auto-reload timers - provides precise duty-cycle control for motor speed, LED dimming, or power regulation. |
| I/O Sink Capability | 7 high-sink I/O pins rated at 20 mA each - drives LEDs, small relays, or logic-level MOSFETs directly without external buffers. |
| Operating Voltage | 2.7 V to 5.5 V supply range - ensures compatibility with both 3.3 V and 5 V industrial bus systems and battery-backed operation. |
| Temperature Range | −40°C to +85°C ambient operating range - qualified for industrial automation, HVAC, and metering applications. |
Pinout & Package
ST7FLIT19BF0M3 is housed in a 20-pin Small Outline (SO20) package with 300 mil body width, RoHS-compliant lead finish, and standard JEDEC MS-013AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | Primary 2.7–5.5 V supply rail; must be decoupled locally to ensure stable core and analog operation. |
| VSS | Ground reference | Digital and analog ground return; requires low-impedance connection to minimize noise coupling into ADC/comparator. |
| PA0/LTIC | Lite Timer input capture | Edge-triggered event capture for timing pulse widths or period measurements in sensor synchronization. |
| PA2–PA5/ATPWM0–3 | Auto-reload timer PWM outputs | Four independent PWM outputs with configurable frequency and duty cycle - used for motor control or analog signal generation. |
| PB0–PB6/AIN0–6 | Analog input multiplexed with SPI | Seven ADC input channels sharing pins with SPI signals - enables flexible mixed-signal I/O allocation in space-constrained designs. |
| PC0/OSC1 & PC1/OSC2 | Clock source interface | Crystal/resonator connection points; supports external 1–16 MHz oscillators or internal RC oscillator for reduced BOM cost. |
| RESET | Active-low reset input | Asynchronous non-maskable reset with internal pull-up; asserts on power-up and brown-out conditions. |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates during runtime via user code - critical for remote device maintenance without physical access. |
| Programmable Internal Voltage Reference | Stable reference for ADC and comparator - eliminates need for external precision voltage source in low-cost sensor interfaces. |
| Enhanced Low-Voltage Supervisor (LVD) | Detects supply drops below programmable threshold and triggers interrupt or reset - prevents erratic behavior during brown-out events. |
| Five Power-Saving Modes | Halt, Active-Halt, Auto Wake-up from Halt, Wait, and Slow modes reduce current to µA levels - extends battery life in portable monitoring devices. |
| On-Chip Debug Module (DM) | Supports In-Circuit Debugging (ICD) via ICC interface - accelerates development and validation of time-critical firmware logic. |
Applications
| Industrial Sensor Node | Smart HVAC Actuator |
|---|---|
Use Scenario: Compact environmental monitor measuring temperature, humidity, and CO₂ using analog sensors and digital communication. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, SPI sensor reads, PWM fan control, and low-power sleep scheduling. Use Value: Integrated op-amp and 13-bit effective ADC resolution enable direct millivolt-level sensor interfacing without external signal conditioning. | Use Scenario: Zone-based damper actuator with position feedback, thermal protection, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Real-time motion controller executing PID loops, generating PWM for stepper/servo drivers, and handling UART protocol framing. Use Value: Four independent PWM outputs and 20 mA sink I/O allow direct drive of indicator LEDs and small solenoids - reducing external component count. |
| Energy Meter Front-End | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Sub-metering unit capturing voltage/current waveforms and computing RMS, harmonics, and energy consumption. IC Role / Device Role / Timing Role: Signal acquisition engine synchronizing 7-channel ADC sampling with precise timing derived from auto-reload timers. Use Value: Dual 12-bit auto-reload timers provide jitter-free trigger sources for simultaneous ADC conversions - improving measurement accuracy. | Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs, relay outputs, and CAN/RS-485 uplink. IC Role / Device Role / Timing Role: Local intelligence hub managing opto-isolated input debouncing, relay timing, and serial protocol translation. Use Value: High-sink (20 mA) I/O pins directly drive relay coils and status LEDs - eliminating discrete transistor drivers and simplifying PCB layout. |
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, 10-bit ADC only (no extended low-range precision) | Better performance for compute-intensive tasks; lacks analog front-end for sub-500 mV sensor signals | Select when higher clock speed and larger code space outweigh need for millivolt-level ADC resolution. |
| EFM8BB10F8G-A-QFN20 | Silicon Labs 8051 core, 8 KB Flash, 12-bit ADC with PGA, 2x comparators, but no dedicated PWM timer block | Superior analog features for precision sensing; limited PWM flexibility for motor control | Prefer when multi-stage gain amplification and comparator hysteresis are required over deterministic PWM timing. |
Compared with STM8S003F3P6 and EFM8BB10F8G-A-QFN20, the ST7FLIT19BF0M3 uniquely balances analog precision (13-bit effective ADC range), deterministic PWM timing (dual 12-bit auto-reload), and ultra-low-power operation - making it optimal for cost-sensitive, mixed-signal industrial edge nodes where sensor fidelity and power efficiency are co-prioritized.
Availability
ST7FLIT19BF0M3 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, energy meter front-ends, and PLC I/O modules requiring stable component supply across long production lifecycles.
Supply support for ST7FLIT19BF0M3 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.
The ST7LITE1xB family delivers cost-optimized 8-bit MCUs targeting resource-constrained industrial controls, where integrated analog peripherals, low-voltage operation, and field-programmable Flash simplify system architecture and reduce bill-of-materials cost.
FAQ
What is the maximum ADC input voltage range and effective resolution?
The ST7FLIT19BF0M3 ADC provides two precision ranges: 0–430 mV full-scale at 13-bit effective resolution (via integrated op-amp gain), and 430 mV–5 V at standard 10-bit resolution. This dual-range capability enables accurate measurement of both low-level sensor outputs and higher-voltage signals without external amplifiers.
Does ST7FLIT19BF0M3 support true In-Application Programming (IAP)?
Yes - the device supports byte-by-byte IAP via its XFlash memory architecture. Firmware can reprogram designated Flash sectors while the CPU executes code from other regions, enabling secure over-the-air updates and dynamic parameter storage without halting system operation.
How many independent PWM channels does ST7FLIT19BF0M3 provide?
It delivers four independent PWM outputs (ATPWM0–ATPWM3) from its dual 12-bit auto-reload timers. Each channel supports configurable frequency, duty cycle, and polarity - suitable for driving DC motors, RGB LEDs, or switching regulators with synchronized timing.
What debug interface does ST7FLIT19BF0M3 use?
The device integrates an on-chip Debug Module (DM) compliant with the ST7 ICC protocol, accessible via dedicated ICCCLK and ICCDATA pins (PA6 and PA5). This enables full In-Circuit Debugging including breakpoints, register inspection, and memory read/write - without requiring additional debug hardware beyond a standard ICC adapter.
ST7FLIT19BF0M3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- 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:
- 17
- 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 7x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST7FLIT19BF0M3 FAQ
1.How can I place an order for ST7FLIT19BF0M3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FLIT19BF0M3 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 ST7FLIT19BF0M3 reliable?
The price and inventory of ST7FLIT19BF0M3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FLIT19BF0M3 is usually 5 days.
3.What payment methods are accepted for ST7FLIT19BF0M3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FLIT19BF0M3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FLIT19BF0M3?
ST7FLIT19BF0M3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FLIT19BF0M3 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 ST7FLIT19BF0M3?
For technical support, including ST7FLIT19BF0M3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FLIT19BF0M3 requirements.
6.How does Aetrix verify that ST7FLIT19BF0M3 is sourced from the original manufacturer or authorized distributors?
All ST7FLIT19BF0M3 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 ST7FLIT19BF0M3 meets industry standards.
7.What is the process for return or replacement of ST7FLIT19BF0M3?
All ST7FLIT19BF0M3 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FLIT19BF0M3, 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 ST7FLIT19BF0M3 part is unused and in its original packaging.
Return procedure for ST7FLIT19BF0M3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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