STMicroelectronics STM32L4S9ZIJ6

Overview

STM32L4S9ZIJ6 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 display applications. It delivers 150 DMIPS, supports -40 °C to 125 °C operation, and achieves 420 nA Standby mode with RTC.

For engineers reviewing the STM32L4S9ZIJ6 datasheet, STM32L4S9ZIJ6 pinout, STM32L4S9ZIJ6 application, or STM32L4S9ZIJ6 equivalent, key selection criteria include ultra-low-power graphics capability (Chrom-ART + DSI), dual-bank read-while-write Flash security, hardware AES/SHA-256 acceleration, and 144-pin UFBGA package with 136 fast 5 V-tolerant I/Os.

Technical Context

This MCU integrates a dual-lane MIPI DSI Host controller running at up to 500 Mbit/s per lane, coupled with an LCD-TFT controller (LTDC) and Chrom-ART Accelerator (DMA2D) for hardware-accelerated 2D graphics composition. The interconnect matrix enables concurrent access to Flash, SRAM, and peripherals without bus contention.

The power architecture includes FlexPowerControl with five low-power modes (Shutdown, Standby, Stop 2, etc.), batch acquisition mode (BAM) for sensor data collection, and independent analog supply domains supporting simultaneous ADC/DAC/OPAMP/COMP operation at sub-1.8 V logic levels.

Key Specifications

Pinout & Package

STM32L4S9ZIJ6 is housed in a 144-ball Ultra-Fine Pitch Ball Grid Array (UFBGA144) package with 0.4 mm ball pitch and 10 mm × 10 mm body size. This package supports high-density routing and thermal performance suitable for compact display-enabled IoT and industrial HMI designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R9ZIJ6, the STM32L4S9ZIJ6 offers identical display and crypto features at lower Flash endurance-ideal for cost-sensitive, medium-lifecycle devices. Versus STM32H743ZIT6, it trades peak performance for 100× lower standby current and integrated DSI, making it uniquely suited for portable, battery-constrained HMIs.

Availability

STM32L4S9ZIJ6 is available at Aetrix Electronics and suitable for smart medical terminals, industrial HMI panels, secure IoT gateways, and portable test equipment requiring stable component supply across long product lifecycles.

Supply support for STM32L4S9ZIJ6 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32L4S9xx series belongs to ST's ultra-low-power MCU product line, engineered specifically for battery-operated human-machine interfaces with integrated display controllers and hardware security-targeting medical, industrial, and smart-home edge devices.

FAQ

What is the maximum operating temperature range for STM32L4S9ZIJ6?

The STM32L4S9ZIJ6 is qualified for industrial extended temperature operation from -40 °C to +125 °C ambient, verified per JEDEC JESD47. This rating applies to all electrical specifications and low-power modes, including 420 nA Standby with RTC, and is validated across the full UFBGA144 package thermal profile.

Does STM32L4S9ZIJ6 support MIPI DSI without external PHY?

Yes-STM32L4S9ZIJ6 integrates a compliant MIPI D-PHY transmitter (DSIHOST) with programmable slew rate and termination, eliminating need for external PHY. It drives standard DSI panels directly using internal DSI_D0P/N, DSI_D1P/N, and DSI_CLKN/P pins at up to 500 Mbit/s per lane.

How many I/Os are 5 V-tolerant on STM32L4S9ZIJ6?

Up to 136 I/Os on STM32L4S9ZIJ6 are 5 V-tolerant when V_DDIO ≥ 2.7 V, covering all GPIO ports (PA–PK) except BOOT0 and oscillator pins. Tolerance is guaranteed per ST specification AN4993 and validated across voltage, temperature, and process corners.

Can STM32L4S9ZIJ6 execute code from external Octo-SPI memory?

No-Octo-SPI interface supports XIP (execute-in-place) only on selected STM32H7 and STM32L5 devices. STM32L4S9ZIJ6 supports external memory mapping via FSMC (NOR/PSRAM/NAND/FRAM) and Octo-SPI (for data storage only); code execution must occur from internal Flash or SRAM.