STMicroelectronics STM32U595QJI6

Overview

STM32U595QJI6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M33 32-bit microcontroller with TrustZone® security, FPU, and 240 DMIPS performance at up to 160 MHz. It integrates 4 MB Flash (with ECC), 2.5 MB SRAM (including ECC-enabled regions), MIPI® DSI host controller, LTDC, Neo-Chrom GPU, and dual 14-bit ADCs-targeting secure, graphics-rich IoT edge nodes and battery-powered HMI applications.

For engineers reviewing the STM32U595QJI6 datasheet, STM32U595QJI6 pinout, STM32U595QJI6 application, or STM32U595QJI6 equivalent, key selection considerations include TrustZone-enforced secure boot, LPBAM autonomous peripheral operation in Stop 2 mode, 150 nA Shutdown current, 18.5 µA/MHz Run-mode efficiency, and WLCSP208 package compatibility with high-density PCB layouts.

Technical Context

The STM32U595QJI6 implements a dual-bank Flash architecture enabling read-while-write operations and supports hardware-accelerated cryptographic services via HASH, TRNG (NIST SP800-90B compliant), and Secure Firmware Installation (SFI) with embedded Root Secure Services. Its power architecture combines LDO and SMPS with on-the-fly voltage scaling for dynamic energy optimization across operating modes.

It features three independent cache subsystems: 32-Kbyte ICACHE for zero-wait-state flash execution, 16-Kbyte DCACHE1 for external memory acceleration, and 16-Kbyte DCACHE2 dedicated to graphics data. The Neo-Chrom GPU (GPU2D) and Chrom-ART Accelerator (DMA2D) offload rotation, scaling, and transparency rendering from the CPU-enabling smooth UI updates with minimal SRAM bandwidth consumption.

Key Specifications

Pinout & Package

STM32U595QJI6 is housed in a 208-ball WLCSP (5.38 × 5.47 mm) package with 0.4 mm pitch, optimized for space-constrained portable electronics. Ballout supports full peripheral multiplexing including dual OCTOSPI, HSPI, MIPI DSI, LTDC, USB OTG HS, and UCPD interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32U575ZIT6, the STM32U595QJI6 adds MIPI DSI, LTDC, GPU2D, and 2× more Flash/SRAM - justifying its use in advanced HMI. Versus i.MX RT685, it offers superior integrated security, lower static power, and native display support - reducing BoM count and layout complexity.

Availability

STM32U595QJI6 is available at Aetrix Electronics and suitable for smart wearables, secure industrial HMIs, medical point-of-care devices, and energy-efficient smart home hubs requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.

Supply support for STM32U595QJI6 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 analog components for industrial, automotive, and consumer markets.

The STM32U5 series is ST's flagship ultra-low-power MCU product line, engineered specifically for secure, battery-operated edge devices demanding rich graphics, cryptographic agility, and sub-microamp sleep currents - targeting next-generation IoT endpoints where safety, privacy, and energy efficiency are non-negotiable.

FAQ

What is the maximum operating temperature range for STM32U595QJI6?

The STM32U595QJI6 is rated for operation from –40 °C to +125 °C ambient temperature, validated per JEDEC JESD22-A108. This extended grade supports deployment in harsh environments such as industrial control cabinets, automotive under-hood modules, and outdoor smart infrastructure - with full specification compliance across the entire range, including Flash write endurance and RTC accuracy.

Does STM32U595QJI6 support USB Power Delivery negotiation?

Yes - the integrated UCPD1 peripheral provides full USB Type-C and Power Delivery 3.0 controller functionality, including CC line monitoring, VBUS sensing, PD message parsing, and policy engine execution. No external transceiver is required, and ST's STM32CubeU5 firmware package includes certified PD stack implementations compliant with USB-IF specifications.

How does LPBAM reduce system-level power consumption?

LPBAM enables peripherals (e.g., ADC, timers, DMA, UART) to execute predefined data chains autonomously in Stop 2 mode without CPU intervention. For example, an ADC can sample a sensor every 100 ms, store results in SRAM, and trigger a UART transfer upon buffer fill - all while the CPU remains powered off. This eliminates wake-up overhead and reduces average system current by up to 75% versus polling-based architectures.

Can the Neo-Chrom GPU render vector-based UI elements like SVG?

No - the Neo-Chrom GPU (GPU2D) is a fixed-function 2D raster accelerator optimized for bitmap operations: rotation, scaling, blending, and tiling. It does not parse or render vector formats like SVG. However, ST's TouchGFX framework pre-rasters SVG assets into bitmaps at build time and leverages GPU2D for efficient runtime composition - achieving smooth vector-like UI transitions with minimal CPU load.