STMicroelectronics STM32L4P5QGI6P

Overview

STM32L4P5QGI6P 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, LCD-TFT controller, and integrated external SMPS support. It delivers 41 µA/MHz in SMPS-run mode, 190 nA Standby with RTC, and supports capacitive touch sensing for battery-powered industrial HMI and portable medical devices.

For engineers reviewing the STM32L4P5QGI6P datasheet, STM32L4P5QGI6P pinout, STM32L4P5QGI6P application, or STM32L4P5QGI6P equivalent, key selection criteria include ultra-low-power operation across multiple sleep modes, dual-bank read-while-write Flash, hardware parity-checked SRAM, and integrated Chrom-ART Accelerator for TFT display rendering.

Technical Context

The device integrates an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, and a multi-speed internal oscillator auto-trimmed by LSE (±0.25% accuracy). Its power architecture includes FlexPowerControl with five low-power modes - Shutdown (22 nA), Standby (42 nA), Stop 2 with RTC (2.95 µA), and Run modes optimized for LDO or external SMPS supply.

Peripherals are routed via a 14-channel DMA controller and interconnect matrix supporting concurrent access to memory and peripherals. The MCU features two 12-bit ADCs (5 Msps), two 12-bit DACs, two op-amps with PGA, two ultra-low-power comparators, and dual Octo-SPI interfaces for high-bandwidth external memory expansion.

Key Specifications

Pinout & Package

STM32L4P5QGI6P is housed in a UFBGA132 package (7 × 7 mm, 0.4 mm pitch), compatible with high-density PCB layouts and automated assembly. Pin functions are defined per Table 15 (DS12903 Rev 3, p.76) and support flexible peripheral remapping via alternate function registers AF0–AF15.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5ZIT6, the STM32L4P5QGI6P trades memory capacity for superior power efficiency and integrated SMPS control; versus STM32U575ZIT6, it provides proven L4-series toolchain compatibility and lower cost where TrustZone is not mandated.

Availability

STM32L4P5QGI6P is available at Aetrix Electronics and suitable for industrial HMI terminals, portable medical monitors, smart utility meters, and wireless sensor node gateways requiring stable component supply across multi-year production cycles.

Supply support for STM32L4P5QGI6P 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 analog components for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, with design emphasis on battery longevity, rich peripheral integration, and functional safety readiness (IEC 61508 SIL2 support).

FAQ

What is the maximum operating frequency and corresponding DMIPS rating?

The STM32L4P5QGI6P operates at up to 120 MHz with an ART Accelerator enabled, delivering 150 DMIPS (1.25 DMIPS/MHz per Dhrystone 2.1). This performance is sustained with zero wait states from Flash memory, verified under 1.71–3.6 V supply and -40 °C to 125 °C ambient conditions per DS12903 Rev 3.

Does this MCU support external SMPS control, and how is it implemented?

Yes - the STM32L4P5QGI6P integrates dedicated SMPS control logic including voltage feedback input (VDDSMPS), switching control outputs (SMPS_EN, SMPS_SW), and regulation loop support. It works with external buck converters like the ST1PS01 to achieve 41 µA/MHz run-mode efficiency, as confirmed in Section 3.7.3 and Table 26 of DS12903 Rev 3.

How many I/O pins are 5 V-tolerant, and what is the minimum I/O supply voltage supported?

Up to 136 GPIOs are 5 V-tolerant on input; 14 pins (e.g., PA0–PA13, PB0–PB1) support independent VDDIO2 supply down to 1.08 V. This enables direct interfacing with 1.2 V, 1.8 V, and 3.3 V peripherals without external level shifters, per Section 3.11 and Table 15 of the datasheet.

What display interfaces does the STM32L4P5QGI6P support, and what is the maximum resolution?

The MCU integrates an LCD-TFT controller supporting RGB parallel interfaces up to 24-bit color depth and resolutions including 800×480 (WVGA) at 60 Hz. It also includes Chrom-ART Accelerator (DMA2D) for hardware-accelerated 2D graphics, documented in Sections 3.28 and 3.15 of DS12903 Rev 3.