STMicroelectronics STM8L152K6T3

Overview

STM8L152K6T3 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 STM8L152K6T3 datasheet, STM8L152K6T3 pinout, STM8L152K6T3 application, or STM8L152K6T3 equivalent, key selection considerations include its 32-pin LQFP package, 1.3 µA Active-halt mode with full RTC, LCD driver capability, SWIM-based debugging, and 96-bit unique ID - all critical for space-constrained, long-life embedded designs.

Technical Context

The STM8L152K6T3 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 with clock security system.

Power management includes five low-power modes - notably Active-halt (1.3 µA with RTC) and Halt (350 nA) - enabled by ultra-low-leakage I/Os (50 nA per pin) and fast wakeup (4.7 µs from Halt). The integrated LCD controller supports step-up conversion and up to 112 segments without external bias.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 32 pins; RoHS-compliant, ECOPACK® certified, rated for industrial temperature range (–40 °C to +85 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152C6T6, the K6T3 trades I/O count for compactness and cost; versus STM32L053R8T6, it retains LCD integration and simpler toolchain at the expense of 32-bit performance and memory scale - making it optimal for cost-sensitive, display-centric ultra-low-power applications.

Availability

STM8L152K6T3 is available at Aetrix Electronics and suitable for smart utility metering, portable medical devices, industrial sensor nodes, and low-power home automation requiring stable component supply across extended product lifecycles.

Supply support for STM8L152K6T3 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 battery-operated and energy-harvesting applications where minimal active/halt current, integrated peripherals (LCD, RTC, touch), and long-term supply stability are essential design requirements.

FAQ

What is the maximum operating frequency and corresponding power consumption in Run mode?

The STM8L152K6T3 achieves a maximum clock frequency of 16 MHz. At 16 MHz and 3.0 V supply, typical active current is 195 µA/MHz + 440 µA, resulting in approximately 3.56 mA total. This value assumes all peripherals disabled except core and system clocks; actual consumption scales linearly with enabled peripherals and voltage.

Does the device support in-circuit programming and debugging without dedicated debug headers?

Yes. The STM8L152K6T3 uses the SWIM (Single-Wire Interface Module) protocol, requiring only one dedicated pin (SWIM) and ground for non-intrusive programming and real-time debugging. No JTAG header or additional pins are needed, reducing PCB footprint and simplifying production programming.

Can the integrated LCD controller drive custom segment layouts beyond standard 4×28?

The LCD controller supports up to 112 segments (4 commons × 28 segments), configurable via software mapping. Custom layouts - such as alphanumeric displays or partial-segment activation - are supported through register-level COM/SEG assignment; however, physical pinout limits segment routing to the 32-pin LQFP package's available I/Os.

How does the 96-bit unique ID benefit secure firmware deployment?

The factory-programmed 96-bit unique ID enables cryptographic binding of firmware images to individual units during secure boot or OTA update processes. It serves as a hardware root-of-trust anchor for AES key derivation, device authentication, and anti-cloning measures - without requiring external secure elements.