STMicroelectronics STM8L152M8T7

Overview

STM8L152M8T7 from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 64 KB Flash, 2 KB data EEPROM, integrated RTC with ±0.5 ppm digital calibration, 12-bit ADC (1 Msps, 28 channels), dual 12-bit DACs, LCD controller (8×40/4×44), and 67 GPIOs-designed for battery-powered industrial sensors and portable medical devices requiring sub-µA sleep current and fast wake-up.

For engineers reviewing the STM8L152M8T7 datasheet, STM8L152M8T7 pinout, STM8L152M8T7 application, or STM8L152M8T7 equivalent, key selection criteria include verified low-power mode currents (1.4 µA Active-Halt with RTC), LCD driver capability, dual DAC output buffering, and SWIM-based non-intrusive debugging support.

Technical Context

The STM8L152M8T7 implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz max frequency and supporting up to 40 external interrupt sources. Its clock system integrates dual crystal oscillators (32 kHz LSE + 1–16 MHz HSE), factory-trimmed 16 MHz RC, and clock security system for fail-safe operation.

Power management includes five programmable low-power modes (Halt at 400 nA, Active-Halt with RTC at 1.4 µA), BOR with five thresholds, and ultra-low I/O leakage (50 nA per pin). The RTC provides BCD calendar, alarm, anti-tamper detection, and digital calibration-enabling precise timekeeping in energy-constrained deployments.

Key Specifications

Pinout & Package

LQFP80 (14 × 14 mm, 0.5 mm pitch) package with 80 pins. Pin functions validated per DS6948 Rev 11 Figure 4 (STM8L152M8 80-pin package pinout with LCD).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L151M8T6, the STM8L152M8T7 adds LCD support and doubles Flash capacity-critical for firmware-over-the-air updates in field-deployed meters. Versus STM32L053R8T6, it delivers lower active and sleep currents but trades 32-bit instruction efficiency for proven 8-bit determinism in safety-critical timing loops.

Availability

STM8L152M8T7 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and asset tracking tags requiring stable component supply across extended product lifecycles.

Supply support for STM8L152M8T7 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 semiconductors since 1987.

The STM8L ultra-low-power 8-bit MCU family targets battery-operated and energy-harvesting applications demanding sub-microamp sleep currents, integrated analog peripherals, and long-term supply assurance-especially in industrial and medical edge devices.

FAQ

What is the maximum operating frequency and corresponding power supply range?

The STM8L152M8T7 operates up to 16 MHz. With Brown-Out Reset (BOR) enabled, the valid VDD range is 1.8 V to 3.6 V; without BOR, it extends down to 1.65 V. This allows flexible power source selection-including single-cell Li-ion (3.0–3.6 V) or two alkaline cells (up to 3.2 V)-while maintaining full performance.

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

Yes, the STM8L152M8T7 integrates hardware-accelerated capacitive sensing supporting up to 16 channels. It natively handles touchkey, proximity, linear touch, and rotary touch configurations without external components-validated in ST's AN4603 application note and supported by STM32CubeMX-compatible configuration tools.

What RTC accuracy can be achieved, and is calibration required?

The RTC achieves ±0.5 ppm accuracy over temperature and voltage ranges using digital calibration-no external trimming or manual calibration is needed. Accuracy is maintained with 32.768 kHz LSE crystal and verified across -40°C to +85°C per DS6948 Section 3.5 and Table 25.

Is SWIM debugging supported, and what pins are required?

Yes, SWIM (Single-Wire Interface Module) debugging is fully supported using only the SWIM pin (PB4 on LQFP80) and GND. It enables non-intrusive flash programming, real-time variable inspection, and breakpoint debugging-without requiring dedicated JTAG/SWD pins or additional PCB routing.