STMicroelectronics STM8L151G6Y3TR

Overview

STM8L151G6Y3TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 32 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 BCD calendar and auto-wakeup, and up to 41 I/Os - deployed in battery-powered industrial sensors and portable medical devices.

For engineers reviewing the STM8L151G6Y3TR datasheet, STM8L151G6Y3TR pinout, STM8L151G6Y3TR application, or STM8L151G6Y3TR equivalent, key selection criteria include sub-µA halt-mode current (350 nA), fast 4.7 µs wake-up time, 1.65–3.6 V operating range, LCD support readiness (though not enabled in this variant), and SWIM-based non-intrusive debugging.

Technical Context

The STM8L151G6Y3TR 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 (1–16 MHz HSE, 32 kHz LSE), factory-trimmed 16 MHz RC, and 38 kHz low-consumption RC with clock security system.

Power management includes five configurable low-power modes: Wait (195 µA/MHz + 440 µA), Low Power Run (5.1 µA), Low Power Wait (3 µA), Active-Halt with full RTC (1.3 µA), and Halt (350 nA). I/O leakage is specified at ≤50 nA per pin, and reset logic features programmable voltage detector (PVD) and 5-threshold BOR.

Key Specifications

Pinout & Package

STM8L151G6Y3TR is housed in a 28-pin UFQFPN package (4 × 4 mm, 0.5 mm pitch), optimized for space-constrained PCB layouts in wearables and compact sensors. Pin functions are fully defined per Table 5 of DS6372 Rev 17.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L151K6T3, the STM8L151G6Y3TR offers superior board-area efficiency in 4×4 mm QFN; versus STM32L053R8T6, it delivers lower system-level BOM cost and simpler firmware for deterministic 8-bit control tasks.

Availability

STM8L151G6Y3TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, and industrial wireless sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for STM8L151G6Y3TR 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 products for industrial, automotive, and consumer markets.

The STM8L ultra-low-power MCU product line targets battery-operated and energy-harvesting applications where sub-µA sleep current, fast wake-up, and integrated analog peripherals reduce system complexity and extend operational lifetime.

FAQ

Does STM8L151G6Y3TR support LCD driving?

No. The STM8L151G6Y3TR belongs to the STM8L151xx series "without LCD" (per Table 1 of DS6372). It lacks the LCD controller peripheral present only in STM8L152xx variants. Its pinout and memory map exclude LCD segment/duty register sets, and no LCD-related registers are implemented in its RM.

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

The STM8L151G6Y3TR operates up to 16 MHz. At 16 MHz and 3.0 V, typical Run-mode current is 195 µA/MHz + 440 µA = 3.56 mA (per Table 20). This includes core, Flash, RAM, and default peripherals; disabling unused clocks reduces consumption proportionally.

Is SWIM debugging supported, and what hardware is required?

Yes - SWIM (Single-Wire Interface Module) is fully supported for non-intrusive debugging and programming. Only a single signal line (SWIM), VDD, and VSS are required. ST-LINK/V2 or compatible debuggers connect directly; no JTAG header or additional level-shifting circuitry is needed.

How is the 96-bit unique ID accessed and used in firmware?

The 96-bit unique ID is stored in read-only registers at addresses 0x4865–0x486A (per Table 14). Firmware accesses it via direct memory read (e.g., *(uint32_t*)0x4865). It is commonly used for device authentication, secure boot binding, or generating MAC addresses in networked applications.