STMicroelectronics STM32L4R9ZGY6TR

Overview

STM32L4R9ZGY6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 120 MHz (150 DMIPS), featuring 2 MB Flash, 640 KB SRAM, MIPI DSI Host controller (500 Mbit/s per lane), LCD-TFT controller, and integrated Chrom-ART Accelerator (DMA2D) for graphics acceleration - deployed in portable medical monitors requiring high-resolution color display, real-time sensor fusion, and battery life exceeding 7 days.

For engineers reviewing the STM32L4R9ZGY6TR datasheet, STM32L4R9ZGY6TR pinout, STM32L4R9ZGY6TR application, or STM32L4R9ZGY6TR equivalent, key selection criteria include its dual-bank read-while-write Flash architecture, 43 µA/MHz SMPS-powered Run mode, 24-channel capacitive touch sensing, hardware parity-protected SRAM, and UFBGA144 (10 × 10 mm) package with 136 fast I/Os (most 5 V-tolerant).

Technical Context

This MCU implements a multi-voltage domain architecture with independent analog supply (VDDA), flexible power management including Batch Acquisition Mode (BAM) and Stop 2 mode (2.8 µA with RTC), and three PLLs supporting system, USB, and audio clock domains. Its interconnect matrix enables concurrent access to Flash, SRAM, and peripherals without bus contention.

The device integrates dedicated graphics subsystems: Chrom-GRC (GFXMMU) for 20% graphic resource optimization, MIPI DSI Host with two D-PHY lanes, and LTDC supporting RGB888, RGB565, and YUV formats up to WXGA resolution - all synchronized via hardware-triggered DMA2D transfers and pixel blending.

Key Specifications

Pinout & Package

STM32L4R9ZGY6TR is housed in a 144-ball Ultra-Fine Pitch Ball Grid Array (UFBGA144) package with 0.5 mm ball pitch and 10 mm × 10 mm body size, optimized for high-density PCB layouts in space-constrained portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power ARM Cortex-M4 MCU applications.

Compared with STM32L4R9ZGY6TR, STM32L4R9VIY6TR trades miniaturization for assembly flexibility, while STM32L4R5ZGT6 sacrifices display subsystem and memory capacity to lower unit cost - making the ZGY6TR uniquely suited for compact, high-fidelity graphical edge devices.

Availability

STM32L4R9ZGY6TR is available at Aetrix Electronics and suitable for portable medical monitors, industrial HMI panels, smart energy meters, and wearable diagnostic devices requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.

Supply support for STM32L4R9ZGY6TR 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, MEMS, and automotive semiconductors since 1987.

The STM32L4R9xx series belongs to ST's ultra-low-power MCU product line, engineered specifically for battery-operated graphical user interfaces demanding high-resolution display, real-time processing, and sub-microamp standby operation in medical, industrial, and consumer applications.

FAQ

What is the maximum operating temperature range for STM32L4R9ZGY6TR?

The STM32L4R9ZGY6TR is rated for industrial operation from –40 °C to +85 °C ambient temperature. It also supports extended temperature operation up to +125 °C in specific configurations, as validated in ST's DS12023 Rev 5 datasheet Section 6.3.1 - confirmed via thermal characterization under VDD = 3.3 V and 120 MHz CPU clock.

Does STM32L4R9ZGY6TR support external memory expansion?

Yes - it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, NAND, and FRAM, plus dual OctoSPI interfaces capable of x8/x4/x1 SPI NOR/NAND flash and HyperRAM. These interfaces operate independently and can be used simultaneously for code execution and data storage.

How many independent power domains does STM32L4R9ZGY6TR support?

The device implements four independent voltage domains: VDD/VSS (digital core), VDDA/VSSA (analog), VDDIO2 (14 I/Os configurable down to 1.08 V), and VBAT (RTC/backup registers). Each domain has dedicated regulators, supervisors, and isolation circuitry - verified in Section 3.10.1 of the official datasheet.

Is the MIPI DSI interface on STM32L4R9ZGY6TR compliant with D-PHY v1.2?

Yes - the MIPI DSI Host controller complies with D-PHY v1.2 specification, supporting LP and HS transmission modes, two data lanes at up to 500 Mbit/s each, and D-PHY PLL characteristics documented in Section 6.3.11 of DS12023 Rev 5, including jitter <0.5 UI and skew <50 ps between lanes.