STMicroelectronics STM8L152K6U6TR

Overview

STM8L152K6U6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 32 KB Flash, 1 KB data EEPROM with ECC, RTC, LCD controller (4×28 segments), 12-bit ADC (1 Msps, 25 channels), 12-bit DAC, two ultra-low-power comparators, and multiple timers including an advanced control timer for motor control. It operates from 1.65 V to 3.6 V and supports industrial temperature range (–40 °C to +85 °C), targeting battery-powered metering and portable medical devices.

For engineers reviewing the STM8L152K6U6TR datasheet, STM8L152K6U6TR pinout, STM8L152K6U6TR application, or STM8L152K6U6TR equivalent, key selection criteria include active-halt current (1.3 µA with RTC), Halt mode leakage (350 nA), LCD segment drive capability, SWIM debug interface compatibility, and capacitive touch sensing support across up to 16 channels.

Technical Context

The STM8L152K6U6TR implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates dual crystal oscillators (1–16 MHz HSE and 32 kHz LSE), factory-trimmed 16 MHz RC, and 38 kHz low-consumption RC, all managed by a clock security system.

Power management includes five low-power modes-Wait, Low Power Run (5.1 µA), Low Power Wait (3 µA), Active-Halt with full RTC (1.3 µA), and Halt (350 nA)-with fast 4.7 µs wakeup from Halt. The device integrates a BCD calendar RTC with alarm and auto-wakeup, plus a step-up converter for LCD bias generation.

Key Specifications

Pinout & Package

STM8L152K6U6TR is housed in a UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with 32 pins, optimized for space-constrained ultra-low-power applications. Pin functions are fully mappable to interrupt vectors, supporting flexible I/O routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152K6U6TR, STM8L152C6T6 offers greater I/O and ADC scalability in LQFP48, while STM32L053R8T6 trades LCD integration for 32-bit processing and lower dynamic power-but requires external display hardware.

Availability

STM8L152K6U6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial wireless sensor nodes, and low-power home automation controllers requiring stable component supply across extended product lifecycles.

Supply support for STM8L152K6U6TR 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 components for industrial, automotive, and consumer markets.

The STM8L ultra-low-power MCU product line targets battery-critical applications such as energy metering, wearable health devices, and IoT edge nodes-emphasizing sub-µA sleep modes, integrated peripherals, and long-term supply assurance.

FAQ

What is the maximum operating frequency and core architecture of the STM8L152K6U6TR?

The STM8L152K6U6TR features an 8-bit STM8 core with Harvard architecture and a 3-stage pipeline, achieving a maximum operating frequency of 16 MHz and delivering up to 16 CISC MIPS. Its instruction set is optimized for ultra-low-power execution, with single-cycle I/O access and efficient interrupt handling critical for responsive sensor node operation.

Does the STM8L152K6U6TR support capacitive touch sensing, and how many channels are available?

Yes, the STM8L152K6U6TR integrates a dedicated Capacitive Sensing Guider (CSG) supporting up to 16 channels. It enables robust touchkey, proximity, linear touch, and rotary touch implementations without external components or CPU intervention-ideal for battery-powered user interfaces in medical and home automation devices.

What LCD capabilities does the STM8L152K6U6TR provide, and what is its segment limit?

The STM8L152K6U6TR includes a built-in LCD controller supporting up to 4 commons and 28 segments (4×28 configuration). It features an integrated step-up converter to generate required LCD bias voltage, eliminating the need for external charge pumps or DC-DC converters-reducing component count and board space in portable displays.

How does the power consumption compare across low-power modes, and what is the lowest achievable current?

In Halt mode with regulators disabled, the STM8L152K6U6TR consumes just 350 nA at 25 °C. With RTC active in Active-Halt mode (LSE clocked), it draws 1.3 µA-enabling calendar functionality and periodic wake-up while preserving multi-year battery life. These values are measured at VDD = 1.65 V to 3.6 V and confirmed per DS6372 Rev 17 electrical characteristics tables.