STMicroelectronics STM8L151G4Y6TR

Overview

STM8L151G4Y6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 16 MHz STM8 core, 16 KB Flash, 1 KB Data EEPROM with ECC, 2 KB RAM, 12-bit ADC (1 Msps, 25 channels), 12-bit DAC, two ultra-low-power comparators, RTC with calendar and auto-wakeup, and capacitive touch sensing (up to 16 channels). It targets battery-powered industrial sensors, portable medical devices, and smart metering endpoints requiring sub-µA halt mode operation.

For engineers reviewing the STM8L151G4Y6TR datasheet, STM8L151G4Y6TR pinout, STM8L151G4Y6TR application, or STM8L151G4Y6TR equivalent, key selection criteria include verified 350 nA Halt current, 1.65–3.6 V operating range, 28-pin UFQFPN package compatibility, and integrated capacitive sensing support without external components.

Technical Context

The STM8L151G4Y6TR implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. It integrates dual clock domains: high-speed (HSE/LSE/HSI) and low-power (LSI/38 kHz RC), managed by a clock security system and programmable voltage detector (PVD).

Its ultra-low-power architecture supports five distinct power modes - including Active-halt (1.3 µA with full RTC) and Halt (350 nA) - with 4.7 µs wakeup latency. Peripheral autonomy is enabled via 4-channel DMA supporting ADC, DAC, SPI, I²C, USART, and timers, plus memory-to-memory transfers.

Key Specifications

Pinout & Package

STM8L151G4Y6TR is housed in a 28-pin UFQFPN (4 × 4 mm, 0.5 mm pitch) package with exposed thermal pad. This compact, near-chip-scale footprint supports high-density PCB layouts in space-constrained portable and wearable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L151G4Y6TR, STM8L052C6T6 trades RTC and DAC for lower cost and smaller footprint, while STM32L011K4T6 offers 32-bit performance at the expense of integrated analog/touch features - making the G4Y6TR optimal for cost-sensitive, feature-dense ultra-low-power sensor endpoints.

Availability

STM8L151G4Y6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and capacitive touch remotes requiring stable component supply across long-lifecycle deployments.

Supply support for STM8L151G4Y6TR 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.

The STM8L ultra-low-power MCU family targets energy-constrained applications such as battery-powered IoT edge nodes, wearables, and smart meters - prioritizing sub-µA power states, integrated analog peripherals, and long-term supply assurance.

FAQ

What is the maximum operating temperature range for STM8L151G4Y6TR?

The STM8L151G4Y6TR is rated for operation from –40 °C to +85 °C, validated per ST's production data (DS6372 Rev 17). This industrial-grade temperature range supports deployment in outdoor sensor enclosures, HVAC controls, and factory-floor instrumentation without derating.

Does STM8L151G4Y6TR support in-system programming via SWIM?

Yes - the device features a Single-Wire Interface Module (SWIM) that enables non-intrusive in-circuit debugging and fast on-chip programming using only one pin (SWIM), eliminating the need for dedicated debug headers or complex JTAG infrastructure during development and field updates.

Can the 12-bit DAC output drive a load directly?

Yes - the integrated 12-bit DAC includes an output buffer capable of sourcing/sinking ±5 mA, allowing direct connection to op-amp inputs, LED bias circuits, or calibration references without external amplification, as confirmed in Section 9.3.13 of DS6372.

Is the 1 KB Data EEPROM endurance specified?

Yes - the Data EEPROM supports 300,000 write/erase cycles and 20-year data retention at 85 °C, with built-in ECC for bit-error correction, ensuring reliable parameter storage in field-deployed equipment subject to frequent configuration updates.