STMicroelectronics STM32L4P5CET6

Overview

STM32L4P5CET6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 120 MHz max frequency, 512 KB Flash (dual-bank read-while-write), 192 KB SRAM (including 64 KB with hardware parity), and integrated LCD-TFT controller. It supports external SMPS for 41 µA/MHz run-mode efficiency and delivers 150 DMIPS at 120 MHz. Used in battery-powered industrial HMI, portable medical monitors, and smart metering front-ends requiring long runtime and graphical display.

For engineers reviewing the STM32L4P5CET6 datasheet, STM32L4P5CET6 pinout, STM32L4P5CET6 application, or STM32L4P5CET6 equivalent, key selection criteria include its 22 nA shutdown current, dual Octo-SPI interfaces for high-speed external memory, 2×12-bit ADCs (5 Msps), and hardware-accelerated graphics via Chrom-ART DMA2D - all within LQFP48 (7 × 7 mm) packaging.

Technical Context

The STM32L4P5CET6 implements FlexPowerControl architecture with seven low-power modes, including 190 nA standby-with-RTC and 2.95 µA Stop 2 with RTC. Its ART Accelerator enables zero-wait-state execution from Flash at 120 MHz, while the interconnect matrix routes 23 communication peripherals-including USB OTG FS, CAN 2.0B, 6×USART, and 2×SAI-across dual AHB buses.

Core timing relies on four independent clock sources: 4–48 MHz HSE, 32 kHz LSE for RTC, factory-trimmed 16 MHz HSI (±1%), and auto-calibrated MSI (±0.25%). Three PLLs generate system, USB, and audio clocks; the 14-channel DMA controller offloads data movement from CPU across peripherals like Octo-SPI, SDMMC, and DFSDM.

Key Specifications

Pinout & Package

LQFP48 package: 48-pin quad flat pack, 7 × 7 mm body, 0.5 mm lead pitch, exposed thermal pad, JEDEC standard, suitable for automated SMT assembly and thermal management in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5ZIT6 and STM32U575ZIT6, the STM32L4P5CET6 uniquely balances ultra-low-power operation, integrated LCD-TFT controller, and compact LQFP48 packaging - making it optimal for cost-sensitive, space-constrained HMI designs requiring native display support without external graphics ICs.

Availability

STM32L4P5CET6 is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, smart metering, and wireless sensor gateways requiring stable component supply and long-term manufacturability.

Supply support for STM32L4P5CET6 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding rich peripheral integration, advanced graphics capability, and extended battery life - exemplified by the L4P5's combination of LCD-TFT controller, Chrom-ART accelerator, and sub-µA low-power modes.

FAQ

What is the maximum operating frequency and core type of the STM32L4P5CET6?

The STM32L4P5CET6 features an Arm Cortex-M4 core with FPU, rated for up to 120 MHz operation. It achieves 150 DMIPS performance and includes a Memory Protection Unit (MPU) and DSP instruction set. The Adaptive Real-Time Accelerator (ART) enables zero-wait-state execution from Flash memory at this frequency, eliminating performance bottlenecks in real-time control loops.

Does the STM32L4P5CET6 support external memory interfaces, and which types are compatible?

Yes, the STM32L4P5CET6 supports external memory via its Flexible Static Memory Controller (FSMC), which interfaces with SRAM, PSRAM, NOR, NAND, and FRAM. Additionally, it integrates two Octo-SPI controllers capable of driving high-speed serial flash and RAM devices with up to 8-line x4 data transfers, enabling boot-from-external-memory and expandable code/data storage beyond on-chip limits.

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

The STM32L4P5CET6 offers seven low-power modes: Shutdown (22 nA), Standby (42 nA), Standby with RTC (190 nA), Stop 2 with RTC (2.95 µA), and Run mode at 41 µA/MHz (SMPS) or 110 µA/MHz (LDO). These values are measured under specified conditions per DS12903 Rev 3, enabling multi-year battery life in applications like smart meters and portable diagnostics equipment.

Is the STM32L4P5CET6 pin-compatible with other STM32L4 series MCUs in LQFP48 package?

No, the STM32L4P5CET6 is not fully pin-compatible with earlier LQFP48-packaged STM32L4x5/4x6 variants due to differences in peripheral mapping and alternate function assignments - particularly for Octo-SPI, SAI, and LCD-TFT signals. Pin compatibility must be verified per specific variant using the STM32L4P5xx pin definition table (DS12903 Table 15) and schematic review before migration.