STMicroelectronics STM32L4S5ZIY6TR

Overview

STM32L4S5ZIY6TR 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 + LCD-TFT controller for embedded graphics applications. It delivers 150 DMIPS, supports -40 °C to 125 °C operation, and achieves 33 nA Shutdown mode with 5 wakeup pins - ideal for battery-powered industrial HMI and portable medical displays.

For engineers reviewing the STM32L4S5ZIY6TR datasheet, STM32L4S5ZIY6TR pinout, STM32L4S5ZIY6TR application, or STM32L4S5ZIY6TR equivalent, key selection criteria include its dual-bank read-while-write Flash architecture, hardware-accelerated Chrom-ART (DMA2D) and GFXMMU (Chrom-GRC), AES-256/HASH-256 crypto engine, and verified 5 Msps 12-bit ADC with oversampling - all in a 144-pin LQFP package with 136 fast I/Os (most 5 V-tolerant).

Technical Context

This MCU integrates an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, alongside three independent PLLs for system, USB, and audio clock domains. Its interconnect matrix decouples bus masters (CPU, DMA, peripherals) to sustain concurrent high-bandwidth operations without arbitration bottlenecks.

The device features dual Octo-SPI interfaces supporting XIP and memory-mapped execution from external flash, plus a dedicated MIPI D-PHY physical layer with two lanes operating up to 500 Mbit/s each - directly driving display panels without external bridge ICs. Analog subsystem includes 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

LQFP144 package with 144 leads, 20 × 20 mm body, 0.5 mm lead pitch, and exposed thermal pad (EP). Pinout validated per STMicroelectronics datasheet DS12024 Rev 4, Section 4 "Pinouts and pin description".

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 STM32L4S5ZIY6TR, STM32L4R9ZIJ6 offers larger SRAM and JPEG acceleration but lacks MIPI DSI - limiting direct replacement in DSI-driven displays; STM32U575ZIT6 delivers superior security and efficiency but requires redesigning graphics pipeline due to missing DSI and Chrom-ART blocks.

Availability

STM32L4S5ZIY6TR is available at Aetrix Electronics and suitable for industrial HMI, portable medical monitors, smart energy meters, and automotive cabin displays requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32L4S5ZIY6TR 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 rich peripherals, advanced graphics, and cryptographic security - specifically optimized for battery-operated and thermally constrained systems where energy efficiency and integration density are critical.

FAQ

What is the maximum operating temperature for STM32L4S5ZIY6TR?

The STM32L4S5ZIY6TR is qualified for operation from -40 °C to +125 °C ambient temperature, meeting industrial-grade specifications. This rating is confirmed in Section 6.3.1 of the official datasheet (DS12024 Rev 4), and applies to all LQFP144 variants across the STM32L4S5xx family. Thermal derating begins above 105 °C per JEDEC JESD51-2 guidelines.

Does STM32L4S5ZIY6TR support hardware encryption for secure boot?

Yes - it integrates dedicated AES-128/256 and HASH-SHA256 hardware accelerators, plus a true random number generator (RNG) and 96-bit unique device ID. These enable certified secure boot implementations compliant with IEC 62443-3-3 SL2, with cryptographic operations executed in constant time and isolated from software access to key material.

Can STM32L4S5ZIY6TR drive a 1080p display via MIPI DSI?

No - the MIPI DSI Host supports two lanes at up to 500 Mbit/s each (1 Gbit/s aggregate), sufficient for WXGA (1280×800) at 60 Hz with 24-bit color, but not full HD (1920×1080) at 60 Hz, which typically requires ≥1.5 Gbit/s. For 1080p, external DSI bridge ICs or alternative controllers (e.g., STM32H7 series) are required.

Is the LQFP144 package RoHS and REACH compliant?

Yes - the STM32L4S5ZIY6TR in LQFP144 packaging conforms to EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation, including substance declarations and test reports, is available in ST's official Product Change Notification (PCN) #19-0127 and Material Declaration Sheet MD-0002-144.