STMicroelectronics STM8L152R6T6TR

Overview

STM8L152R6T6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 32 KB Flash, 2 KB data EEPROM, RTC, LCD controller, 12-bit ADC (1 Msps, 28 channels), dual 12-bit DACs, and two ultra-low-power comparators. It operates from 1.65–3.6 V across –40 to +85 °C and targets battery-powered metering, portable medical devices, and smart sensors requiring sub-µA sleep current.

For engineers reviewing the STM8L152R6T6TR datasheet, STM8L152R6T6TR pinout, STM8L152R6T6TR application, or STM8L152R6T6TR equivalent, key selection criteria include active-halt mode current (1.4 µA with full RTC), 67 GPIOs mappable to interrupt vectors, capacitive touch support (16 channels), and SWIM-based non-intrusive debugging.

Technical Context

The STM8L152R6T6TR implements a Harvard-architecture 8-bit STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates dual crystal oscillators (32 kHz LSE, 1–16 MHz HSE), factory-trimmed 16 MHz RC, and 38 kHz low-consumption RC with clock security system.

Power management includes five configurable low-power modes-Halt (400 nA), Active-halt (1.4 µA with RTC), Low-power wait (3 µA), Low-power run (5.9 µA), and Wait-with fast wake-up (4.7 µs from Halt) and per-I/O leakage as low as 50 nA.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 67 I/O pins-64 exposed leads plus VDD, VSS, and VCAP-supporting full peripheral mapping, LCD segment driving (4×44 or 8×40), and capacitive sensing inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152R6T6TR, the R8 variant offers double Flash for firmware headroom but identical low-power behavior, while the STM32L053 trades ultra-low sleep current and integrated LCD for 32-bit performance and ecosystem breadth-making it less optimal for display-driven, battery-limited applications.

Availability

STM8L152R6T6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, and industrial wireless sensor nodes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature ranges.

Supply support for STM8L152R6T6TR 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 automotive-grade components since 1987.

The STM8L ultra-low-power MCU family targets battery-operated and energy-harvesting applications where sub-microamp sleep current, integrated peripherals (LCD, RTC, touch), and robust operation across extended temperature ranges are critical design requirements.

FAQ

What is the maximum operating frequency and corresponding power consumption of the STM8L152R6T6TR?

The STM8L152R6T6TR achieves a maximum CPU frequency of 16 MHz using its internal 16 MHz RC oscillator or external HSE crystal. At 16 MHz and 3.0 V supply, typical active-mode current is 200 µA/MHz + 330 µA, resulting in ~3.53 mA total. This includes core, flash, and peripheral operation with all clocks enabled.

Does the STM8L152R6T6TR support capacitive touch sensing, and how many channels are available?

Yes, the STM8L152R6T6TR integrates a dedicated hardware capacitive sensing controller supporting up to 16 channels. It enables touchkey, proximity, linear touch, and rotary touch configurations with built-in de-bounce, auto-calibration, and low-power scan modes-requiring no external components beyond sensor electrodes.

Can the STM8L152R6T6TR drive an LCD directly, and what display configurations does it support?

Yes, the STM8L152R6T6TR includes a fully integrated LCD controller capable of driving up to 8×40 or 4×44 segments. It features an on-chip step-up converter, eliminating the need for external voltage boost circuitry, and supports static, 2-, 3-, and 4-mux displays with software-configurable bias and frame frequency.

What debug interface does the STM8L152R6T6TR use, and is JTAG supported?

The STM8L152R6T6TR uses the SWIM (Single-Wire Interface Module) protocol for programming and non-intrusive debugging via a single pin (SWIM). JTAG is not supported; SWIM provides full flash read/write, breakpoint setting, and real-time register inspection without halting CPU execution during debug sessions.