STMicroelectronics STM8L152R8T6

Overview

STM8L152R8T6 from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 64 KB Flash, 2 KB data EEPROM, integrated RTC with ±0.5 ppm accuracy, 12-bit ADC (1 Msps, 28 channels), dual 12-bit DACs, LCD controller (8×40), and 67 GPIOs in LQFP64 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 long runtime and precise timing.

For engineers reviewing the STM8L152R8T6 datasheet, STM8L152R8T6 pinout, STM8L152R8T6 application, or STM8L152R8T6 equivalent, key selection criteria include ultra-low-power run mode (5.9 µA), Halt-mode current (400 nA), fast wake-up (4.7 µs), on-chip LCD drive capability, and dual DAC support for analog output generation in space-constrained embedded systems.

Technical Context

The STM8L152R8T6 implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates factory-trimmed 16 MHz RC, 38 kHz low-power RC, and external 32 kHz/1–16 MHz crystal oscillators with clock security system for fault detection.

Power management includes five programmable low-power modes, BOR with five thresholds, PVD, and ultra-low leakage I/Os (50 nA). The RTC supports BCD calendar, alarm interrupt, digital calibration, and anti-tamper detection - all functional in Active-halt mode at 1.4 µA.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin quad flat leadframe suitable for industrial PCB assembly and reflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152C8T6, the R8T6 offers more I/O and LCD capability in larger LQFP64; versus STM32L053R8T6, it delivers superior sub-µA sleep efficiency and simpler toolchain for deterministic low-power control tasks.

Availability

STM8L152R8T6 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 STM8L152R8T6 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 analog components for industrial, automotive, and consumer markets.

The STM8L ultra-low-power MCU product line targets battery-operated and energy-harvesting applications demanding sub-microamp sleep currents, integrated peripherals (RTC, LCD, DAC), and robust operation across extended temperature ranges.

FAQ

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

The STM8L152R8T6 achieves a maximum CPU frequency of 16 MHz. At VDD = 3.0 V and 25 °C, typical Run-mode current is 200 µA/MHz plus 330 µA base consumption - totaling ~3.53 mA at full speed. This value scales linearly with frequency and varies with supply voltage and temperature per Section 9.3.3 of DS6948 Rev 11.

Does the device support hardware-based capacitive touch sensing without external components?

Yes. The STM8L152R8T6 integrates a dedicated capacitive sensing controller supporting up to 16 channels. It performs auto-calibration, noise filtering, and baseline tracking in hardware, enabling touchkey, proximity, linear slider, and rotary touch applications using only PCB traces - no external ICs or RC networks required.

Can the internal RTC maintain time accuracy during deep sleep modes?

Yes. The RTC remains fully operational in Active-halt mode (1.4 µA) when clocked by the 32 kHz LSE crystal. Digital calibration achieves ±0.5 ppm accuracy over temperature, and anti-tamper detection triggers reset if case intrusion or voltage glitch is detected - all while preserving RTC registers and calendar state.

Is SWIM debugging supported in all low-power modes?

SWIM is active only in Run, Wait, and Low-power run modes. It is disabled in Low-power wait, Active-halt, and Halt modes to preserve ultra-low current. Debug access must be re-established after wake-up; breakpoints and watchpoints remain intact across low-power transitions when configured properly in the debugger.