STMicroelectronics ST7FLIT19BF0M6

Overview

ST7FLIT19BF0M6 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 ST7FLIT19BF0M6 datasheet, ST7FLIT19BF0M6 pinout, ST7FLIT19BF0M6 application, or ST7FLIT19BF0M6 equivalent, key selection criteria include guaranteed 300K EEPROM write/erase cycles, 20-year data retention at 55°C, 20 mA high-sink I/O capability on 7 pins, and support for Auto Wake-up from Halt mode via external interrupt or timer event.

Technical Context

This MCU implements an enhanced ST7 8-bit core with true bit manipulation, 8×8 unsigned multiply, and 17 addressing modes. It integrates a 1% internal RC oscillator, optional x4/x8 PLL for 4/8 MHz clock generation, and dual clock domains: one for CPU/peripherals and another 32-MHz input for auto-reload timer precision timing.

The peripheral set includes two independent 12-bit auto-reload timers supporting PWM, input capture, output compare, and pulse generation; a dedicated watchdog timer; and a 10-bit ADC with fixed-gain op-amp enabling 13-bit precision over 0–430 mV range at 5 V VDD.

Key Specifications

Pinout & Package

ST7FLIT19BF0M6 is packaged in a 20-pin SOIC (SO20 300") with 1.27 mm pitch, compliant with JEDEC MS-013AC. Pin functions are validated per ST's official pin description (Rev 6, pp.5–8).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with ST7FLIT19BF0M6, the ST7FLITE15BF0M6 reduces nonvolatile memory and analog safety features for cost savings, while the STM8S003F3P6 trades integrated analog front-end for raw processing headroom - making the ST7FLIT19BF0M6 optimal for resource-constrained, mixed-signal edge nodes demanding long-term reliability and autonomous analog decision-making.

Availability

ST7FLIT19BF0M6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, programmable power supply monitors, and legacy equipment retrofit modules requiring stable component supply across extended product lifecycles.

Supply support for ST7FLIT19BF0M6 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 automotive-grade components.

The ST7LITE1xB series targets cost-sensitive, low-power embedded applications in industrial automation and consumer appliances, emphasizing robust analog integration, long-term data retention, and simplified development with on-chip debug support.

FAQ

What is the maximum operating frequency of the ST7FLIT19BF0M6?

The ST7FLIT19BF0M6 supports up to 8 MHz CPU frequency: achieved either via external 16 MHz crystal with internal divide-by-2, or internal 1 MHz RC oscillator multiplied by PLL (x4 or x8). The 32 MHz input clock is dedicated solely to the auto-reload timer subsystem and does not drive the CPU core.

Does the ST7FLIT19BF0M6 support in-system programming without a debugger?

Yes - it supports In-Circuit Programming (ICP) via the ICC interface using only three pins (ICCCLK, ICCDAT, RESET), enabling firmware updates directly on the target board without JTAG or SWD hardware. No external debugger is required for basic flash reprogramming.

How many ADC channels can be used simultaneously, and what is their conversion time?

The ST7FLIT19BF0M6 provides seven single-ended ADC input channels (AIN0–AIN6), but conversions are sequential - only one channel sampled per conversion cycle. At 5 V VDD and 1 MHz ADC clock, typical conversion time is 13 µs per 10-bit result, with optional 13-bit precision mode for the 0–430 mV range.

Can the high-sink I/O pins drive standard LEDs directly?

Yes - seven I/O pins (PA0–PA5, PA7) are rated for 20 mA sink current at VDD ≥ 3.0 V, sufficient to drive common 2 mA–20 mA indicator LEDs without external transistors. Ensure current-limiting resistors are sized for forward voltage drop and desired brightness per I_OH/I_OL specs in Section 13.8.