STMicroelectronics STM8L152C6T6

Overview

STM8L152C6T6 from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 32 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 timers including an advanced control timer for motor control. It operates from 1.65 V to 3.6 V and supports industrial temperature range (–40 °C to +85 °C), targeting battery-powered metering and portable medical devices.

For engineers reviewing the STM8L152C6T6 datasheet, STM8L152C6T6 pinout, STM8L152C6T6 application, or STM8L152C6T6 equivalent, key selection criteria include active-halt current (1.3 µA with RTC), Halt-mode wakeup time (4.7 µs), LCD segment drive capability, capacitive touch support (16 channels), and SWIM-based non-intrusive debugging.

Technical Context

The STM8L152C6T6 implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz max frequency. 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 includes five distinct 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 per-I/O leakage as low as 50 nA and fast wake-up from Halt in 4.7 µs. The LCD controller includes integrated step-up converter and BCD calendar RTC with alarm and auto-wakeup.

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 pin (PD3), and NRST with Schmitt trigger.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8L152C6T6, STM8L152K6T6 offers identical low-power behavior in smaller form factor but omits LCD; STM32L053R8T6 delivers superior processing headroom and memory but increases system-level design effort for display integration.

Availability

STM8L152C6T6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical devices, industrial sensor nodes, and home appliance control requiring stable component supply across extended product lifecycles.

Supply support for STM8L152C6T6 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-sensitive applications such as battery-operated meters, wearables, and industrial sensors, emphasizing sub-microamp power modes and integrated analog peripherals.

FAQ

What is the maximum operating frequency and corresponding power consumption of STM8L152C6T6?

The STM8L152C6T6 achieves a maximum system clock of 16 MHz using the HSE oscillator or factory-trimmed 16 MHz RC. At this frequency and 3.3 V supply, typical active-mode current is 195 µA/MHz + 440 µA - approximately 3.56 mA total. This value includes core, peripheral, and I/O activity under standard test conditions defined in DS6372 Rev 17 Section 9.3.3.

Does STM8L152C6T6 support capacitive touch sensing, and how many channels are available?

Yes, the STM8L152C6T6 integrates a dedicated capacitive sensing controller supporting up to 16 channels. It enables touchkey, proximity, linear slider, and rotary touch applications without CPU intervention, using hardware-accelerated measurement and built-in baseline tracking. Channel assignment is configurable via GPIO remapping and requires no external components beyond sensor electrodes.

Can the internal 12-bit DAC drive external loads directly, and what is its output configuration?

The 12-bit DAC features a buffered voltage output routed to PB4, PB5, or PB6 (configurable via option bytes). It delivers rail-to-rail output with ±1 LSB INL/DNL over full scale and supports continuous or triggered operation. Load capability is specified up to 50 µA sink/source; for higher-current applications, an external op-amp buffer is recommended per DS6372 Section 9.3.13.

Is SWIM debugging supported in all power modes, and what are the physical interface requirements?

SWIM debugging is fully operational in Run, Wait, and Low Power Wait modes, but not available in Active-Halt or Halt modes due to clock gating. Debug access requires only PD3 (SWIM) and NRST pins, with no additional signals needed. A 10 kΩ pull-up on NRST and proper decoupling on VDD/VDDA are mandatory; SWIM operates at up to 4 MHz and tolerates VDD as low as 1.65 V during programming.