STMicroelectronics STM8L152M8T6TR

Overview

STM8L152M8T6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 64 KB Flash, 2 KB data EEPROM, RTC, LCD controller, dual 12-bit DACs, 12-bit ADC (up to 28 channels, 1 Msps), three USARTs, two SPIs, I²C, and up to 67 GPIOs in LQFP80 package. 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 STM8L152M8T6TR datasheet, STM8L152M8T6TR pinout, STM8L152M8T6TR application, or STM8L152M8T6TR equivalent, key selection criteria include active-halt mode current (1.4 µA with full RTC), fast wake-up time (4.7 µs), LCD support (8×40/4×44), capacitive touch channel count (16), and SWIM-based non-intrusive debugging.

Technical Context

The STM8L152M8T6TR implements a Harvard-architecture 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 programmable 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 BOR thresholds configurable across five levels and ultra-low I/O leakage (50 nA per pin).

Key Specifications

Pinout & Package

LQFP80 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; 80-pin quad flat configuration optimized for high I/O count and LCD integration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152M8T6TR, STM8L152K8T6 trades LCD and I/O for compactness, while STM32L053R8T6 offers architectural scalability at the cost of increased power in deep-sleep modes and absence of integrated LCD drive.

Availability

STM8L152M8T6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, and industrial wireless sensor nodes requiring stable component supply and long-term lifecycle assurance.

Supply support for STM8L152M8T6TR 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong focus on energy efficiency and industrial reliability.

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

FAQ

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

The STM8L152M8T6TR achieves a maximum clock frequency of 16 MHz. At 16 MHz and 3.0 V, typical active current consumption is 200 µA/MHz + 330 µA, resulting in approximately 3.53 mA total. This value includes core, peripheral, and memory activity under standard conditions per DS6948 Rev 11 Section 9.3.3.

Does the device support hardware-accelerated capacitive touch sensing?

Yes, the STM8L152M8T6TR integrates a dedicated 16-channel capacitive sensing controller supporting touchkey, proximity, linear touch, and rotary touch configurations. It operates independently of the CPU, uses built-in charge-transfer measurement, and requires no external components beyond sensor electrodes.

Can the internal RTC maintain accurate timekeeping when the main power is removed?

No-the RTC requires VDD supply to operate. However, it retains functionality in Active-halt mode (1.4 µA) with LSE crystal, enabling continuous calendar operation during ultra-low-power sleep. For true backup, an external VBAT supply must be connected to the dedicated VBAT pin per Section 3.5 of the datasheet.

Is SWIM debugging compatible with production firmware and secure boot configurations?

Yes-SWIM supports non-intrusive debugging and programming even with read-out protection (ROP) enabled at Level 1. At ROP Level 2, SWIM access is disabled for security, but mass erase remains possible via option byte reset. Debugging does not interfere with running application code or secure bootloader execution.