STMicroelectronics STM8L152C4T6TR

Overview

STM8L152C4T6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 16 MHz STM8 core, 16 KB Flash, 1 KB Data EEPROM with ECC, RTC, LCD controller (4×28 segments), 12-bit ADC (1 Msps, 25 channels), 12-bit DAC, two ultra-low-power comparators, and multiple low-power modes including Halt (350 nA). It targets battery-powered portable instrumentation and smart sensors requiring long runtime and integrated display.

For engineers reviewing the STM8L152C4T6TR datasheet, STM8L152C4T6TR pinout, STM8L152C4T6TR application, or STM8L152C4T6TR equivalent, key selection criteria include ultra-low standby current (350 nA in Halt), on-chip LCD driver with step-up converter, dual comparator wakeup capability, and SWIM-based non-intrusive debugging support.

Technical Context

The STM8L152C4T6TR implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its power architecture supports five distinct low-power modes-Wait, Low Power Run (5.1 µA), Low Power Wait (3 µA), Active-Halt with RTC (1.3 µA), and Halt (350 nA)-with 4.7 µs wake-up from Halt.

Clock system includes dual crystal oscillators (1–16 MHz HSE and 32 kHz LSE), factory-trimmed 16 MHz RC, and 38 kHz low-consumption RC, all managed by a clock security system. The integrated LCD controller supports up to 4×28 segments with internal step-up converter and BCD calendar RTC with alarm and auto-wakeup.

Key Specifications

Pinout & Package

LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified. Pin count: 41 user I/Os, all mappable to interrupt vectors; includes dedicated LCD segment/common pins, SWIM debug interface, and dual crystal oscillator inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152C6T6TR, this part trades Flash capacity for lower unit cost and smaller footprint; versus STM32L011K4T6, it retains critical mixed-signal peripherals (LCD, touch, dual comparators) at lower active power and simpler toolchain requirements.

Availability

STM8L152C4T6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical devices, industrial sensor nodes, and low-power IoT endpoints requiring stable component supply across multi-year production cycles.

Supply support for STM8L152C4T6TR 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 MCU family targets battery-operated and energy-harvesting applications demanding sub-microamp standby current, integrated analog peripherals, and robust real-time control-all within a cost-optimized 8-bit architecture.

FAQ

What is the minimum operating voltage for STM8L152C4T6TR in Halt mode?

The device operates down to 1.65 V in Halt mode, with guaranteed 350 nA current consumption at that voltage. This enables reliable operation with aging primary cells or single Li-SOCl₂ batteries without voltage regulation, preserving energy efficiency across the full discharge curve.

Does STM8L152C4T6TR support capacitive touch sensing without external components?

Yes-it integrates a hardware-accelerated capacitive sensing controller supporting up to 16 channels for touchkey, proximity, linear, and rotary touch. No external RC networks or dedicated touch ICs are required; only electrode layout and firmware configuration are needed.

Can the internal 12-bit DAC drive external loads directly?

The DAC output (on PB4–PB6) includes an integrated output buffer capable of sourcing/sinking ±5 mA, allowing direct driving of small analog circuits like op-amp references or LED biasing. Output impedance is <1 Ω, and settling time is 5 µs to 1 LSB.

Is SWIM debugging supported in all low-power modes?

SWIM remains active in Run, Wait, and Low Power Run modes, enabling real-time debugging and programming. It is disabled in Low Power Wait, Active-Halt, and Halt modes to preserve ultra-low current; reactivation requires a reset or wake event.