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STMicroelectronics STM32L4S9ZIJ6TR — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM32L4S9ZIJ6TR ARM Cortex-M4 MCU, 120 MHz, 2 MB Flash

MPNSTM32L4S9ZIJ6TR
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STMicroelectronics STM32L4 series, ARM Cortex-M4 32-bit MCU, 120 MHz, 2 MB Flash, 640 KB SRAM, 112 I/O, 144-UFBGA (10x10), -40 to 85 °C, Tape & Reel.

$15.9029Ref. price · indicative, final on quote
STMicroelectronics STM32L4S9ZIJ6TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32L4S9ZIJ6TR specifications
ParameterValue
SeriesSTM32L4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed120MHz
PackageTape & Reel (TR)
RAM size640K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG
Number of i (O)112
Core processorARM® Cortex®-M4
Case144-UFBGA
Data convertersA/D 16x12b; D/A 2x12b
Program memory size2MB (2M x 8)

Product details

The STM32L4S9ZIJ6TR is a 32-bit ARM Cortex-M4 MCU from STMicroelectronics, clocked at 120 MHz with 2 MB of Flash program memory and 640 KB of SRAM. The 112 I/O lines and rich peripheral set (CAN, USB OTG, multiple SPI/I²C/UART, plus an external bus interface) make it suitable for industrial control panels, motor drives, and IoT gateways where a BGA package is acceptable.

Memory and peripheral density

The 144-UFBGA (10x10 mm) package is a fine-pitch BGA — not hand-solder friendly. The 112 I/O count demands a multi-layer PCB with via-in-pad or microvia routing. Plan for a dedicated ground plane and decoupling capacitor placement per ST's layout guidelines.

For dual-sourcing resilience, ST offers pin-compatible density variants within the STM32L4 series, but no official second-source alternate from another manufacturer is recorded.

Frequently asked questions

What is the closest pin-compatible alternative to STM32L4S9ZIJ6TR?

STMicroelectronics offers pin-compatible density variants within the STM32L4 series — for example, the STM32L4S9 with 1 MB Flash shares the same 144-UFBGA footprint and peripheral set. No second-source alternate from another manufacturer is listed.

What is STM32L4S9ZIJ6TR's listed speed?

The core runs at 120 MHz, which is the maximum clock for this ARM Cortex-M4 device.