STMicroelectronics STM32L152CCT6

Overview

STM32L152CCT6 from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller in LQFP64 package, featuring 256KB Flash, 32KB SRAM, 8KB EEPROM with ECC, integrated LCD controller (up to 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 - deployed in battery-powered medical sensors and portable industrial HMI displays.

For engineers reviewing the STM32L152CCT6 datasheet, STM32L152CCT6 pinout, STM32L152CCT6 application, or STM32L152CCT6 equivalent, key selection criteria include standby current (0.29 µA), 12-bit dual-channel DAC with output buffers, 12-bit 1 Msps ADC with up to 25 channels, ultra-low-power comparators with wake-up capability, and LCD driver support without external bias circuitry.

Technical Context

The STM32L152CCT6 implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) managed by an integrated ultra-safe BOR with five threshold levels and programmable voltage detector (PVD). Its clock system combines a 32 kHz RTC oscillator with calibration, 16 MHz factory-trimmed HSI RC (±1%), and a PLL generating 48 MHz for USB operation.

Analog subsystem integration includes two operational amplifiers, two ultra-low-power comparators (with window mode and wake-up), and a temperature sensor with calibrated reference. Memory architecture features ECC-protected Flash and true EEPROM, enabling robust data logging in field-deployed edge nodes.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 51 general-purpose I/Os (47 5V-tolerant), 16 external interrupt lines, and dedicated LCD segment/common pins routed to pins 1–32 and 57–64.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power ARM Cortex-M3 microcontroller applications.

Compared with STM32L152CCT6, STM32L072CZT6 trades LCD/DAC for lower cost and smaller footprint, while STM32L432KCU6 adds FPU and DSP instructions at the expense of ultra-low-power analog integration - making STM32L152CCT6 optimal for display-integrated, battery-constrained edge devices requiring dual DAC and EEPROM reliability.

Availability

STM32L152CCT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial HMI panels, and asset tracking beacons requiring stable component supply across extended product lifecycles.

Supply support for STM32L152CCT6 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-grade silicon.

The STM32L1 series targets ultra-low-power embedded applications demanding multi-year battery life, robust memory integrity, and integrated analog peripherals - optimized for metering, wearables, and industrial IoT endpoints.

FAQ

What is the maximum operating frequency and core type of the STM32L152CCT6?

The STM32L152CCT6 uses an ARM Cortex-M3 core rated for up to 32 MHz operation, delivering 1.25 DMIPS/MHz (Dhrystone 2.1). Its memory protection unit (MPU) enforces privilege levels and memory region access rules, supporting certified firmware architectures in medical and industrial applications.

Does the STM32L152CCT6 support USB functionality without external components?

Yes - it integrates a full-speed USB 2.0 transceiver with internal pull-up resistors on PA11/PA12 and a dedicated 48 MHz PLL. No external PHY, resistors, or crystal is required for basic HID or CDC device operation, reducing bill-of-materials and PCB area in space-constrained designs.

How does the LCD controller reduce system-level complexity?

The integrated LCD controller supports up to 8×40 segments with programmable contrast, blinking, and an internal step-up converter generating VLCD (2.4–3.6 V) from the main VDD supply. This eliminates external LCD bias ICs, charge pumps, and discrete voltage dividers - verified in ST's AN3617 application note.

What are the key low-power modes and their typical current draw?

Key modes include Standby (0.29 µA, 3 wakeup pins), Standby+RTC (1.15 µA), Stop (0.44 µA, 16 wakeup lines), Stop+RTC (1.4 µA), and Low-power Run (8.6 µA). All retain SRAM and register content except Standby; wakeup latency is ≤8 µs from Stop mode - critical for responsive sensor wake-up in energy-harvesting systems.