STMicroelectronics STM32L4P5ZGT6

Overview

STM32L4P5ZGT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 120 MHz (150 DMIPS), featuring 1 MB Flash, 320 KB SRAM (64 KB with hardware parity), LCD-TFT controller, and integrated SMPS support. It delivers 2.95 µA Stop 2 mode with RTC, 41 µA/MHz Run mode in SMPS configuration, and supports capacitive touch sensing for battery-powered HMI applications.

For engineers reviewing the STM32L4P5ZGT6 datasheet, STM32L4P5ZGT6 pinout, STM32L4P5ZGT6 application, or STM32L4P5ZGT6 equivalent, key selection criteria include ultra-low-power operation across multiple sleep modes, dual-bank read-while-write Flash, hardware-accelerated graphics (DMA2D), and integrated analog peripherals including two 12-bit ADCs (5 Msps) and two DACs.

Technical Context

The device integrates an adaptive real-time accelerator (ART Accelerator) enabling zero-wait-state execution from Flash at 120 MHz, alongside a memory protection unit (MPU) and FlexPowerControl architecture supporting seven low-power modes - from 22 nA Shutdown to 110 µA/MHz Run (LDO) and 41 µA/MHz Run (SMPS). Its interconnect matrix includes a 14-channel DMA controller and multi-AHB bus matrix for concurrent peripheral access.

Clock management features three PLLs (system, USB/audio, ADC), internal oscillators auto-trimmed by LSE (±0.25%), and clock recovery for USB. Analog subsystem includes two 12-bit ADCs with hardware oversampling (up to 16-bit), two operational amplifiers with PGA, two ultra-low-power comparators, and DFSDM filters - all with independent supply domains for noise isolation.

Key Specifications

Pinout & Package

LQFP144 package with exposed thermal pad, standard JEDEC footprint, suitable for industrial temperature range (–40 °C to +125 °C) and reflow-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5ZIT6, the STM32L4P5ZGT6 offers superior ultra-low-power performance and integrated SMPS control, while STM32U575ZIT6 provides enhanced security and lower shutdown current but requires external display interface solutions.

Availability

STM32L4P5ZGT6 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial HMI panels, and wireless sensor gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32L4P5ZGT6 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 high performance per µA, with the L4P5 variant optimized for graphical HMI, advanced analog integration, and extended battery life in industrial and medical devices.

FAQ

What is the maximum operating frequency and associated performance metric?

The STM32L4P5ZGT6 operates at up to 120 MHz using its Arm Cortex-M4 core with FPU. Its performance is quantified at 150 DMIPS (Dhrystone 2.1) and 409.20 CoreMark® (3.41 CoreMark/MHz), validated with ART Accelerator enabled for zero-wait-state Flash execution.

Does this MCU support external SDRAM or PSRAM expansion?

Yes - the Flexible Static Memory Controller (FSMC) supports external SRAM, PSRAM, NOR, NAND, and FRAM memories with configurable timing. It provides dedicated address/data buses and control signals (NE, NOE, NWE, etc.) compatible with common parallel memory devices used in HMI and data-logging applications.

How many capacitive sensing channels does the TSC support, and what interfaces are available?

The Touch Sensing Controller (TSC) supports up to 24 capacitive sensing channels, enabling implementation of touchkeys, linear sliders, and rotary wheels. It operates independently of the CPU, uses spread-spectrum measurement to reject noise, and interfaces directly with GPIO pins configured as TSC channels - no external components required.

Is the LQFP144 package of STM32L4P5ZGT6 pin-compatible with other STM32L4 variants?

No - while pin count and package outline match certain L4-series MCUs (e.g., STM32L4R5ZIT6), signal mapping differs significantly due to expanded peripheral sets (e.g., dual Octo-SPI, LTDC, additional ADC/DAC channels). Pin compatibility must be verified per function using the specific pin definition table (DS12903 Rev 3, Table 15) and alternate function remapping.