STMicroelectronics STM8L152K8Y6TR

Overview

STM8L152K8Y6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 64 KB Flash, 2 KB data EEPROM, RTC, LCD controller (8×40/4×44), dual 12-bit DACs, 12-bit ADC (1 Msps, 28 channels), two ultra-low-power comparators, and three USARTs - deployed in battery-powered industrial sensors and portable medical devices operating from 1.65–3.6 V.

For engineers reviewing the STM8L152K8Y6TR datasheet, STM8L152K8Y6TR pinout, STM8L152K8Y6TR application, or STM8L152K8Y6TR equivalent, key selection criteria include active-halt current (1.4 µA with full RTC), fast wake-up time (4.7 µs from Halt), LCD drive capability, capacitive touch support (16 channels), and SWIM-based non-intrusive debugging.

Technical Context

The STM8L152K8Y6TR implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. It integrates a clock security system, programmable voltage detector (PVD), and five low-power modes - including Halt (400 nA) and Active-halt (1.4 µA with RTC running on LSE).

Its analog subsystem includes two rail-to-rail comparators (one with fixed threshold), dual 12-bit DACs with output buffers, and a 12-bit ADC with internal reference and temperature sensor. The LCD controller supports step-up converter and BCD calendar with ±0.5 ppm digital calibration.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) package with 48 pins; RoHS-compliant, industrial temperature range (−40 to +85 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152R8T6, the STM8L152K8Y6TR trades I/O count and package size for compactness and lower BOM cost; versus STM32L053R8T6, it delivers superior sub-µA sleep efficiency and simpler firmware development at the expense of 32-bit compute capability.

Availability

STM8L152K8Y6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and smart thermostat displays requiring stable component supply across extended product lifecycles.

Supply support for STM8L152K8Y6TR 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 automotive semiconductors since 1987.

The STM8L ultra-low-power family targets battery-operated and energy-harvesting applications where sub-microamp sleep current, integrated peripherals (LCD, RTC, touch), and long-term supply stability are critical design requirements.

FAQ

What is the maximum operating frequency and core architecture of the STM8L152K8Y6TR?

The STM8L152K8Y6TR features an 8-bit STM8 core with Harvard architecture and 3-stage pipeline, achieving up to 16 MIPS at 16 MHz. Its maximum clock frequency is 16 MHz, supported by internal 16 MHz RC (±1% factory-trimmed) or external 1–16 MHz crystal oscillator. The core includes 32-bit stack pointer and 16-bit index registers optimized for ultra-low-power deterministic execution.

Does the STM8L152K8Y6TR support capacitive touch sensing, and how many channels are available?

Yes, the STM8L152K8Y6TR integrates a hardware-accelerated capacitive sensing controller supporting up to 16 channels. It natively handles touchkey, proximity, linear touch, and rotary touch configurations without CPU intervention. Channel configuration is managed via dedicated registers (TS_CR1/CR2), and sensing operates concurrently with other peripherals in low-power modes.

What LCD configurations does the STM8L152K8Y6TR support, and is an external booster required?

The STM8L152K8Y6TR supports 8×40 or 4×44 segment LCDs with an integrated step-up converter, eliminating the need for external voltage boosters. It provides software-configurable bias (1/2, 1/3, 1/4) and multiplex rate (static to 1/8), and drives common outputs directly. The internal charge pump generates up to 4.8 V from 3 V supply, enabling direct segment driving in LQFP48 packaging.

How does the STM8L152K8Y6TR achieve its 400 nA Halt mode current, and what peripherals remain active?

The 400 nA Halt mode disables the CPU, Flash, RAM, and most clocks while retaining SRAM content and register states. Only the ultra-low-power reset circuit, BOR, and optional wake-up sources (EXTI lines, RTC alarm) remain powered. No peripherals - including RTC, LCD, or comparators - operate in true Halt; for RTC retention, Active-halt mode (1.4 µA) must be used with LSE oscillator enabled.