STMicroelectronics STM8L152C4T6

Overview

STM8L152C4T6 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 down to 350 nA in Halt. It targets battery-powered metering, portable medical devices, and smart sensors requiring long runtime and integrated display.

For engineers reviewing the STM8L152C4T6 datasheet, STM8L152C4T6 pinout, STM8L152C4T6 application, or STM8L152C4T6 equivalent, key selection criteria include verified 1.65–3.6 V operation, sub-µA RTC-active halt mode, LCD segment drive capability, and SWIM-based non-intrusive debugging support.

Technical Context

The STM8L152C4T6 implements a Harvard-architecture 3-stage pipeline STM8 core delivering 16 CISC MIPS at 16 MHz, with up to 40 external interrupt sources and fast 4.7 µs wakeup from Halt mode. 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, enabling reliable operation in energy-constrained systems.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) package with 41 user-configurable I/Os, all mappable to interrupt vectors. Includes dedicated LCD segment/common pins (SEG0–SEG31, COM0–COM3), SWIM debug interface (PD3), and dual crystal oscillator inputs (OSC_IN/OSC_OUT, OSC32_IN/OSC32_OUT).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152C4T6, the C6T6 offers scalable memory without altering power or peripheral behavior, while the STM32L011K4T6 trades LCD capability for 32-bit performance and modern toolchain support - making it viable only where display functionality is absent or delegated externally.

Availability

STM8L152C4T6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, and industrial wireless sensor nodes requiring stable component supply and long-term lifecycle assurance.

Supply support for STM8L152C4T6 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, specializing in microcontrollers, power management, sensors, and automotive ICs.

The STM8L ultra-low-power MCU product line targets energy-critical applications such as battery-operated instrumentation, smart meters, and wearable health devices - emphasizing sub-µA sleep modes, integrated analog peripherals, and robust operation across extended temperature ranges.

FAQ

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

The STM8L152C4T6 operates at up to 16 MHz with typical active current of 195 µA/MHz plus 440 µA base consumption - totaling ~3.56 mA at 16 MHz and 3.0 V. This value is measured with all peripherals disabled and includes core, flash, and RAM activity per the DS6372 Rev 17 electrical characteristics table (Section 9.3.3).

Does the device support hardware-accelerated capacitive touch sensing?

Yes - the STM8L152C4T6 integrates a dedicated Capacitive Sensing GPIO (CSG) peripheral supporting up to 16 channels. It enables touchkey, proximity, linear, and rotary touch sensing without external components or CPU intervention, with built-in noise filtering and automatic calibration.

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

The 12-bit DAC features an integrated output buffer capable of sourcing/sinking ±5 mA, allowing direct connection to op-amp inputs, sensor bias networks, or low-current actuators. However, for loads exceeding 5 mA or requiring rail-to-rail swing, an external buffer amplifier is recommended per Section 9.3.13 of the datasheet.

Is SWIM debugging supported in all low-power modes?

SWIM debugging remains active in Run, Wait, and Low Power Run modes but is disabled in Low Power Wait, Active-Halt, and Halt modes. To debug ultra-low-power behavior, developers must use event-triggered breakpoints or log critical state transitions to RAM before entering deeper sleep states.