STMicroelectronics STM32L152CCT6D

Overview

STM32L152CCT6D from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 256 KB Flash, 32 KB SRAM, 8 KB EEPROM with ECC, integrated LCD driver (8×40 segments), and USB 2.0 interface. It operates from 1.65 V to 3.6 V across –40 °C to 105 °C and delivers 1.25 DMIPS/MHz performance-designed for battery-powered medical sensors, portable industrial meters, and smart utility endpoints requiring long runtime and on-chip analog integration.

For engineers reviewing the STM32L152CCT6D datasheet, STM32L152CCT6D pinout, STM32L152CCT6D application, or STM32L152CCT6D equivalent, key selection criteria include its 0.44 µA Stop mode current, dual 12-bit DACs with output buffers, 12-bit ADC with 25 channels and 1 Msps sampling, ultra-low-power comparators with wake-up capability, and 70 I/Os (5V tolerant) mappable to 16 external interrupt vectors.

Technical Context

The STM32L152CCT6D implements dynamic voltage scaling and multiple low-power modes-including Standby (0.29 µA), Stop + RTC (1.4 µA), and Low-power run (8.6 µA)-to optimize energy per compute cycle. Its Cortex-M3 core supports Thumb-2 instruction set, MPU, and 32 MHz max CPU frequency with internal 16 MHz HSI RC trimmed to ±1%.

Analog subsystem includes two operational amplifiers, two ultra-low-power comparators (with window mode and wake-up), a temperature sensor, and VREFINT reference-enabling sensor signal conditioning and self-calibration without external components. The integrated LCD controller supports contrast adjustment, blinking, and step-up converter for segment bias generation.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152CCT6D, the STM32L432KCU6 trades EEPROM and LCD for lower deep-sleep current and FPU, while the EFM32PG12B500F1024GL125 sacrifices USB and display integration for larger memory and RF-hardened peripherals-making STM32L152CCT6D optimal for mixed-signal, display-enabled, USB-configurable edge devices.

Availability

STM32L152CCT6D is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld testers, and low-power environmental monitors requiring stable component supply and long-term production support.

Supply support for STM32L152CCT6D 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, delivering intelligent power, sensing, and control solutions across automotive, industrial, and consumer markets.

The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, integrated analog peripherals, and robust security features-designed specifically for wearables, smart meters, and portable instrumentation.

FAQ

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

The STM32L152CCT6D achieves up to 32 MHz CPU frequency using the internal 16 MHz HSI RC (±1%) or external crystal with PLL. At 32 MHz, typical Run mode current is 185 µA/MHz (≈5.92 mA total), measured with code executing from Flash and all peripherals disabled-scaling linearly with clock speed and active peripheral count.

Does the part include hardware encryption or secure boot capabilities?

No, the STM32L152CCT6D does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It supports software-based security via its 96-bit unique ID and write-protected option bytes, but lacks dedicated security peripherals found in STM32L4/L5 or STM32H5 families.

Can the internal EEPROM be used for firmware over-the-air (OTA) update storage?

Yes-the 8 KB true EEPROM with ECC supports byte-level writes and 100,000 erase/write cycles. It is commonly used for storing OTA update metadata, version flags, and rollback counters. However, full firmware images are typically stored in protected Flash sectors due to size constraints and faster read access.

Is the LCD driver compatible with both static and multiplexed segment displays?

Yes-the integrated LCD controller supports static, 2-mux, 3-mux, and 4-mux configurations up to 8 commons and 40 segments. It includes programmable contrast control, blinking mode, and internal step-up converter for VLCD generation-enabling direct drive of common segment-type LCDs without external bias circuitry.