STMicroelectronics STM32L4P5CGU6P

Overview

STM32L4P5CGU6P from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 120 MHz max frequency, 1-MB Flash, 320-KB SRAM, and integrated LCD-TFT controller. It supports external SMPS for 41 µA/MHz run-mode efficiency, operates from 1.71 V to 3.6 V across –40 °C to 125 °C, and delivers 150 DMIPS for real-time industrial sensor hubs and portable medical monitors.

For engineers reviewing the STM32L4P5CGU6P datasheet, STM32L4P5CGU6P pinout, STM32L4P5CGU6P application, or STM32L4P5CGU6P equivalent, key selection criteria include verified low-power mode current (190 nA Standby with RTC), dual-bank read-while-write Flash, hardware parity-checked SRAM, and Octo-SPI interface support for high-speed external memory expansion.

Technical Context

The device integrates an adaptive real-time accelerator (ART Accelerator) enabling zero-wait-state execution from Flash at 120 MHz, and a multi-layer AHB bus matrix with 14-channel DMA for concurrent peripheral access. Its power architecture includes three independent voltage regulators (LDO/SMPS/VREFBUF) and FlexPowerControl supporting seven low-power modes - including Stop 2 with 2.95 µA RTC retention and 5 µs wakeup.

Clock management features three PLLs (system/USB/audio), internal auto-trimmed 4–48 MHz oscillator (±0.25%), and clock recovery system (CRS) for USB synchronization. Analog subsystem includes two 12-bit ADCs (5 Msps, hardware oversampling up to 16-bit), two DACs, two op-amps with PGA, and two ultra-low-power comparators - all with independent supply domains.

Key Specifications

Pinout & Package

STM32L4P5CGU6P is housed in a 48-pin UFQFPN package (7 × 7 mm body, 0.5 mm pitch), optimized for space-constrained ultra-low-power applications. Pin functions are validated per STMicroelectronics DS12903 Rev 3, Section 4 ("Pinouts and pin description"), with full alternate function mapping (AF0–AF15) supporting flexible peripheral routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5ZIT6, STM32L4P5CGU6P offers smaller footprint and integrated LCD-TFT at lower cost but less memory headroom; versus STM32U575ZIT6, it lacks TrustZone and PSA certification yet provides mature toolchain support and broader third-party middleware compatibility.

Availability

STM32L4P5CGU6P is available at Aetrix Electronics and suitable for industrial sensor hubs, portable medical monitors, smart utility meters, and low-power IoT gateways requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32L4P5CGU6P 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, specializing in microcontrollers, power management, sensors, and automotive ICs.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, extended battery life, and rich peripheral integration - especially in portable, industrial, and medical equipment.

FAQ

What is the maximum operating temperature for STM32L4P5CGU6P?

The STM32L4P5CGU6P is qualified for industrial operation from –40 °C to +125 °C ambient temperature, verified per JEDEC JESD47 stress testing. This rating applies to the full feature set including LCD-TFT controller, Octo-SPI, and analog peripherals - confirmed in DS12903 Rev 3, Section 6.3.1.

Does STM32L4P5CGU6P support external SMPS control?

Yes - the device includes dedicated SMPS control signals (SMPS_EN, SMPS_VOS, SMPS_SW) to drive external buck converters, enabling 41 µA/MHz Run-mode efficiency. The internal regulator automatically switches between LDO and SMPS modes based on voltage scaling configuration, as detailed in Section 3.7.3 of the datasheet.

How many I/O pins support independent 1.08 V supply?

Exactly 14 GPIOs (PA0–PA7, PB0–PB7) support independent 1.08 V to 3.6 V supply via VDDIO2, allowing direct interface with low-voltage peripherals like 1.2 V logic or LPDDR controllers without level shifters - specified in Table 2 and Section 3.11 of DS12903 Rev 3.

Is the LCD-TFT controller capable of driving RGB888 panels?

Yes - the LTDC supports RGB888 (24-bit), RGB666, and RGB565 formats at up to 24 MHz pixel clock, with programmable polarity, synchronization, and dithering. It interfaces directly to parallel RGB panels without external timing controllers, as documented in Section 3.28 and Table 6.3.32.