STMicroelectronics STM8L151C8T6TR

Overview

STM8L151C8T6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 64 KB Flash, 2 KB data EEPROM, RTC, LCD controller, 12-bit ADC (1 Msps, 28 channels), dual 12-bit DACs, and three USARTs. 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 STM8L151C8T6TR datasheet, STM8L151C8T6TR pinout, STM8L151C8T6TR application, or STM8L151C8T6TR equivalent, key selection criteria include verified 400 nA Halt-mode consumption, 1.4 µA Active-halt with RTC, 48-pin LQFP package mapping, and dual DAC output buffering on PB4–PB6.

Technical Context

The STM8L151C8T6TR 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-consumption RC, and support for 32 kHz and 1–16 MHz external crystals with clock security monitoring.

Power management includes five programmable low-power modes, BOR with five thresholds, and ultra-low-leakage I/Os (50 nA). The RTC provides BCD calendar, digital calibration (±0.5 ppm), and anti-tamper detection-enabling precise timekeeping in energy-constrained deployments.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed pad for thermal dissipation and mechanical stability in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L052C6T6, the STM8L151C8T6TR adds calibrated RTC, dual DACs, and CSD-justifying its use in time-aware, analog-output, or touch-enabled designs. Against EFM8LB12F64E, it delivers lower system-level BOM cost via integrated LCD/CSD but trades off RF-friendly architecture.

Availability

STM8L151C8T6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, and industrial wireless sensor nodes requiring stable component supply over extended product lifecycles.

Supply support for STM8L151C8T6TR 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, 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 sub-microamp sleep current, integrated peripherals, and long-term reliability are critical design requirements.

FAQ

What is the maximum operating frequency and core performance of the STM8L151C8T6TR?

The STM8L151C8T6TR runs at up to 16 MHz with its STM8 8-bit Harvard core, achieving 16 CISC MIPS peak performance. Its 3-stage pipeline and optimized instruction set enable deterministic timing for real-time sensor control and communication tasks without requiring complex cache management.

Does the STM8L151C8T6TR support hardware-accelerated capacitive touch sensing?

Yes-it integrates a dedicated Capacitive Sensing Controller (CSD) supporting up to 16 channels for touchkey, proximity, linear, and rotary touch applications. No external components are required, and the CSD operates independently during low-power modes to minimize CPU wake-ups.

How does the RTC maintain accuracy in battery-backed operation?

The RTC uses a 32 kHz external crystal (LSE) with digital calibration achieving ±0.5 ppm accuracy. It remains active in Active-halt mode (1.4 µA) and supports BCD calendar, alarm interrupts, and hardware anti-tamper detection-enabling decade-long timekeeping on coin-cell batteries.

What debug interface does the STM8L151C8T6TR use, and is JTAG required?

The device uses SWIM (Single-Wire Interface Module) for non-intrusive debugging and programming. SWIM requires only one pin (SWIM) plus ground-no JTAG header or additional pins. It supports full-speed debugging, flash erase/write, and bootloader activation via USART without halting peripheral operation.