STMicroelectronics ST7FLIT15BF0M6

Overview

ST7FLIT15BF0M6 from STMicroelectronics is an 8-bit Flash microcontroller featuring 4 KB XFlash program memory, 256 bytes RAM, 128 bytes data EEPROM, 7-channel 10-bit ADC with integrated op-amp, dual 12-bit auto-reload timers (4 PWM outputs), SPI interface, analog comparator, and enhanced low-voltage supervisor. It operates from 2.7 V to 5.5 V at up to 8 MHz and targets embedded control in industrial sensors and power management modules.

For engineers reviewing the ST7FLIT15BF0M6 datasheet, ST7FLIT15BF0M6 pinout, ST7FLIT15BF0M6 application, or ST7FLIT15BF0M6 equivalent, key selection criteria include single-voltage Flash IAP/ICP capability, 20-year data retention at 55°C, 7 high-sink (20 mA) I/Os, 5 timer resources including watchdog and input capture, and support for crystal, RC, or PLL-based clocking with Auto-wake-up from Halt mode.

Technical Context

This MCU implements an industry-standard ST7 8-bit core with true bit manipulation, 8×8 unsigned multiply, and 17 addressing modes. Its memory subsystem integrates byte-erasable XFlash with read-out protection and 10K write/erase cycles, plus 128-byte EEPROM rated for 300K cycles and 20-year data retention at 55°C.

The peripheral set includes a configurable watchdog timer, two 8-bit Lite Timers (one with WDG), two 12-bit auto-reload timers supporting PWM, input capture, output compare, and pulse generation, and a 10-bit ADC with programmable gain op-amp optimized for 0–430 mV (13-bit effective) and 430 mV–5 V (10-bit) ranges at 5 V VDD.

Key Specifications

Pinout & Package

ST7FLIT15BF0M6 is packaged in a 20-pin SOIC (SO20 300 mil) with 0.6 mm pitch, compliant with JEDEC MS-013. The package supports standard reflow and wave soldering per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ST7FLIT15BF0M6, ST7FLITE19BF0M6 offers extended temperature operation and built-in comparator at identical cost and footprint, while STM8S003F3P6 delivers higher clock speed and Flash capacity but removes analog front-end integration - requiring redesign of sensor interface circuitry.

Availability

ST7FLIT15BF0M6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart power switches, programmable logic relays, and low-cost motor starters requiring stable component supply and long-term obsolescence management.

Supply support for ST7FLIT15BF0M6 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 devices for industrial, automotive, and consumer markets.

The ST7LITE1xB product line delivers cost-optimized 8-bit Flash MCUs targeting resource-constrained embedded control applications where low power, integrated analog peripherals, and field-upgradable firmware are essential design requirements.

FAQ

What is the maximum operating frequency of the ST7FLIT15BF0M6?

The ST7FLIT15BF0M6 achieves up to 8 MHz CPU frequency using either an external 16 MHz crystal with internal divide-by-2, the internal 1% RC oscillator (1 MHz), or the optional PLL (x4 or x8) generating 4 MHz or 8 MHz clocks. Electrical characteristics in Section 13.5 confirm timing compliance up to 8 MHz across the full 2.7–5.5 V supply and –40°C to +85°C temperature range.

Does the ST7FLIT15BF0M6 support in-application programming (IAP)?

Yes, the ST7FLIT15BF0M6 supports full IAP via its XFlash memory architecture. Application firmware can erase and reprogram Flash sectors under software control without halting CPU execution, enabling dynamic updates, parameter storage, or bootloader functionality. This is documented in Section 4.3 and verified by the "In-Application Programming" feature listed in the device summary table on page 1.

How many ADC channels does the ST7FLIT15BF0M6 provide, and what is their effective resolution?

The ST7FLIT15BF0M6 provides 7 ADC input channels (AIN0–AIN6). Its 10-bit ADC delivers 13-bit effective precision for input voltages from 0 to 430 mV (at 5 V VDD) due to programmable gain from the integrated op-amp, and standard 10-bit precision for 430 mV to 5 V. This dual-range behavior is explicitly specified in Section 11.5 and confirmed in Table 13.11 on page 139.

Can the ST7FLIT15BF0M6 generate PWM signals, and how many outputs are available?

Yes, the ST7FLIT15BF0M6 generates PWM signals using its two 12-bit auto-reload timers, which collectively provide four dedicated PWM outputs (ATPWM0–ATPWM3) on PA2–PA5. Each output supports configurable period and duty cycle, and all four pins are rated for 20 mA high-sink drive - enabling direct LED or small actuator control without external drivers.