STMicroelectronics STM8L151G6Y6TR

Overview

STM8L151G6Y6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 32 KB Flash, 1 KB Data EEPROM with ECC, 2 KB RAM, 12-bit ADC (1 Msps, 25 channels), 12-bit DAC, two ultra-low-power comparators, RTC with BCD calendar and auto-wakeup, and capacitive touch sensing (up to 16 channels). It operates from 1.65 V to 3.6 V across –40 °C to +125 °C and targets battery-powered industrial sensors and portable medical devices.

For engineers reviewing the STM8L151G6Y6TR datasheet, STM8L151G6Y6TR pinout, STM8L151G6Y6TR application, or STM8L151G6Y6TR equivalent, key selection criteria include active-halt current (1.3 µA with full RTC), Halt mode leakage (350 nA), 41 mappable I/Os, SWIM debug interface, and UFQFPN28 package compatibility for space-constrained designs.

Technical Context

The STM8L151G6Y6TR implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. It integrates dual clock domains: high-speed (HSE up to 16 MHz, HSI 16 MHz factory-trimmed) and low-power (LSE 32 kHz, LSI 38 kHz), managed by a Clock Security System for fault detection.

Its power architecture supports five distinct low-power modes-Wait, Low Power Run (5.1 µA), Low Power Wait (3 µA), Active-Halt (1.3 µA with RTC), and Halt (350 nA)-with 4.7 µs wakeup from Halt. Per-pin leakage is specified at 50 nA, enabling reliable operation in long-duration sleep cycles.

Key Specifications

Pinout & Package

STM8L151G6Y6TR is housed in a 28-pin Ultra Thin Fine Pitch Quad Flat No-lead (UFQFPN28) package, 4 mm × 4 mm, 0.5 mm pitch, with exposed thermal pad. This RoHS-compliant, ECOPACK®-qualified package enables compact PCB layout and efficient thermal dissipation in sealed or portable enclosures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM8L151K4T3, the STM8L151G6Y6TR delivers 100% more Flash and 64% more GPIOs in a smaller 4×4 mm package; versus STM32L053R8T6, it offers superior per-pin leakage control and integrated touch hardware at lower code density overhead.

Availability

STM8L151G6Y6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial wireless sensor nodes, and home appliance control panels requiring stable component supply across extended product lifecycles.

Supply support for STM8L151G6Y6TR 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 products for industrial, automotive, and consumer markets.

The STM8L ultra-low-power MCU family targets energy-critical applications such as battery-operated meters, wearables, and remote sensors-prioritizing sub-µA sleep currents, integrated peripherals, and long-term supply assurance over raw compute throughput.

FAQ

What is the maximum operating frequency and corresponding power consumption of STM8L151G6Y6TR?

The STM8L151G6Y6TR achieves a maximum system clock of 16 MHz using the internal 16 MHz RC oscillator (trimmed to ±1%) or external crystal. At 16 MHz and 3.0 V, typical active-mode current is 195 µA/MHz + 440 µA = 3.56 mA. This value includes core, peripheral, and I/O static consumption per Table 20 in DS6372 Rev 17.

Does STM8L151G6Y6TR support hardware-accelerated capacitive touch sensing?

Yes. The device integrates a dedicated capacitive sensing controller supporting up to 16 channels with built-in charge-transfer measurement, spread-spectrum modulation, and hardware noise filtering. It supports touchkey, proximity, linear touch, and rotary touch configurations without external components or CPU intervention during acquisition.

What debug interface does STM8L151G6Y6TR use, and what are its physical requirements?

It uses the SWIM (Single Wire Interface Module) debug interface, requiring only one dedicated pin (SWIM) plus VDD and VSS. No external debugger chip is needed - standard ST-LINK/V2 or compatible programmers connect directly. SWIM supports full-speed programming, real-time variable inspection, and non-intrusive breakpoints without halting peripheral operation.

Is the 12-bit DAC output buffered, and which pins support it?

Yes, the 12-bit DAC includes an integrated output buffer for rail-to-rail operation and drive capability up to 5 mA. DAC output is available exclusively on pins PB4, PB5, and PB6 - each configurable independently. Buffer activation is controlled via DAC_CR register bit DAC_EN, and output impedance remains <1 Ω when enabled (Table 50, DS6372 Rev 17).