STMicroelectronics STM32L433CCY6TR

Overview

STM32L433CCY6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 256 KB flash, 64 KB SRAM, USB FS, LCD controller, and integrated SMPS support. It delivers 36 µA/MHz in SMPS-run mode, 280 nA Standby with RTC, and supports capacitive touch sensing for battery-powered portable instrumentation.

For engineers reviewing the STM32L433CCY6TR datasheet, STM32L433CCY6TR pinout, STM32L433CCY6TR application, or STM32L433CCY6TR equivalent, key selection criteria include ultra-low-power mode current (e.g., 8 nA Shutdown), LCD driver capability (8×40), USB crystal-less operation, and dual 12-bit DAC channels with sample-and-hold.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a memory protection unit (MPU) and interconnect matrix for deterministic peripheral arbitration. Its FlexPowerControl architecture supports multiple low-power modes-including Stop 2 (1.28 µA with RTC) and Batch Acquisition Mode (BAM)-with sub-µA wake-up latency.

Clock system includes dual PLLs (for system/USB/audio), internal 48 MHz RC with clock recovery, and hardware-calibrated LSE trimming (<±0.25%). Analog subsystem comprises one 12-bit 5 Msps ADC (with 16-bit oversampling), two 12-bit DACs, one op-amp with PGA, and two ultra-low-power comparators-all with independent supply domains.

Key Specifications

Pinout & Package

STM32L433CCY6TR is housed in a 64-ball Ultra-Fine-Pitch Ball Grid Array (UFBGA64, package code A019), measuring 5 × 5 mm with 0.5 mm ball pitch and compliant with ECOPACK2 environmental standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L432KCU6, STM32L433CCY6TR adds LCD and touch capability at higher memory density; versus STM32L476RGT6, it trades flash/SRAM capacity and extended temperature for lower static power and smaller UFBGA64 footprint-ideal for space- and battery-constrained displays.

Availability

STM32L433CCY6TR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, portable medical diagnostics, and industrial sensor nodes requiring stable component supply across long-lifecycle deployments.

Supply support for STM32L433CCY6TR 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 STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, integrated analog peripherals, and rich connectivity-optimized for wearables, metering, and portable industrial devices.

FAQ

What is the maximum operating frequency and associated performance metric?

The STM32L433CCY6TR operates at up to 80 MHz with an Arm Cortex-M4 core featuring FPU and ART Accelerator. Its performance is quantified at 100 DMIPS (Dhrystone 2.1), achieving 3.42 CoreMark/MHz (273.55 total CoreMark score). This reflects deterministic real-time execution capability with zero-wait-state flash access.

Does this MCU support crystal-less USB Full-Speed operation?

Yes. The STM32L433CCY6TR integrates a 48 MHz internal RC oscillator with clock recovery system (CRS), enabling fully compliant USB 2.0 Full-Speed (12 Mbps) operation without an external crystal. This eliminates two external capacitors and reduces BOM cost and PCB area.

What LCD configurations does the integrated controller support?

The built-in LCD controller supports either 8 commons × 40 segments or 4 commons × 44 segments, with integrated step-up converter capable of generating up to 5.2 V from a 1.71–3.6 V supply. This eliminates need for external boost ICs and supports direct drive of segmented LCDs in portable devices.

How many low-power modes are available and what are their typical currents?

Six low-power modes are supported: Shutdown (8 nA), Standby (28 nA), Standby+RTC (280 nA), Stop 2 (1.0 µA), Stop 2+RTC (1.28 µA), and Run in SMPS mode (36 µA/MHz). These values are measured at 3.3 V with optimized configuration per DS11449 Rev 8, enabling decade-long battery life in intermittent-sensing applications.