STMicroelectronics STM32L4R5ZIT6P

Overview

STM32L4R5ZIT6P from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 120 MHz max frequency, 2 MB Flash, 640 KB SRAM, and integrated MIPI DSI host controller + LCD-TFT controller for embedded graphics applications. It supports external SMPS, operates from 1.71–3.6 V, and delivers 43 µA/MHz in SMPS-run mode.

For engineers reviewing the STM32L4R5ZIT6P datasheet, STM32L4R5ZIT6P pinout, STM32L4R5ZIT6P application, or STM32L4R5ZIT6P equivalent, key selection criteria include ultra-low-power operation down to 33 nA (Shutdown), dual-bank read-while-write Flash, hardware-accelerated graphics (Chrom-ART/DMA2D), MIPI DSI interface for high-resolution displays, and integrated analog peripherals including dual 12-bit DACs and two op-amps.

Technical Context

The STM32L4R5ZIT6P integrates an adaptive real-time accelerator (ART Accelerator) enabling zero-wait-state execution from Flash at 120 MHz, and features a multi-AHB interconnect matrix for concurrent peripheral access without bus contention. Its power architecture includes three low-power modes-Shutdown (33 nA), Standby (125 nA), and Stop 2 with RTC (2.8 µA)-all supported by brownout reset and flexible voltage scaling.

Graphics subsystem comprises MIPI DSI Host (dual lanes, 500 Mbit/s each), Chrom-ART Accelerator (DMA2D) for 2D composition, and Chrom-GRC (GFXMMU) for memory optimization. Analog integration includes a 12-bit 5 Msps ADC with hardware oversampling up to 16-bit, two 12-bit DACs, two rail-to-rail op-amps with programmable gain, and two ultra-low-power comparators-all with independent supply domains.

Key Specifications

Pinout & Package

STM32L4R5ZIT6P is housed in a 144-pin LQFP package (20 × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions support full peripheral multiplexing, including dedicated MIPI DSI differential pairs (DSI_CLKP/N, DSI_DAT0P/N, DSI_DAT1P/N), LTDC RGB interface, OctoSPI signals, and dual V_DDIO2 domains for 1.08–3.6 V I/O flexibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5VIT6, the STM32L4R5ZIT6P adds MIPI DSI, LTDC, dual OctoSPI, and 52 extra I/Os-justifying its use in rich-display systems. Versus STM32L4R9ZIJ6, it trades extended temp and crypto acceleration for lower cost and identical core/peripheral capability at commercial temperature.

Availability

STM32L4R5ZIT6P is available at Aetrix Electronics and suitable for smart medical wearables, industrial HMI panels, portable test equipment, and energy-efficient smart home gateways requiring stable component supply across long-lifecycle designs.

Supply support for STM32L4R5ZIT6P 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 products for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, featuring advanced power gating, multiple low-power modes, and integrated peripherals optimized for battery-operated and energy-conscious systems.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32L4R5ZIT6P?

The STM32L4R5ZIT6P runs 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). The ART Accelerator ensures zero-wait-state execution from Flash memory, maintaining deterministic timing critical for real-time control loops and audio processing.

Does the STM32L4R5ZIT6P support external memory expansion, and if so, what types?

Yes, it supports external memory via two independent interfaces: the Flexible Static Memory Controller (FSMC) for parallel memories (SRAM, PSRAM, NOR, NAND, FRAM) and two OctoSPI controllers for high-speed serial flash (x1/x4/x8 modes). This enables boot-from-external-flash, large data buffers, and expandable code space-essential for GUI-rich or data-logging applications.

How does the STM32L4R5ZIT6P manage ultra-low-power operation in battery-backed applications?

It provides multiple ultra-low-power states: 305 nA VBAT mode powers only RTC and 32×32-bit backup registers; 33 nA Shutdown mode retains register state with five wakeup pins; and 420 nA Standby with RTC allows calendar-based wakeups. All modes retain SRAM content when V_DD is removed, and VBAT pin supports coin-cell backup without external circuitry.

What display interfaces does the STM32L4R5ZIT6P integrate, and what resolutions are supported?

It integrates both MIPI DSI Host (dual lanes, 500 Mbit/s each) and parallel LCD-TFT controller (LTDC) with 24-bit RGB output. With Chrom-ART Accelerator and Chrom-GRC, it drives displays up to WXGA (1366×768) via LTDC or 720p (1280×720) via DSI. The dual-interface capability allows direct connection to either parallel or DSI displays without external bridge chips.