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STMicroelectronics STM32L4R9ZGJ6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L4R9ZGJ6 STM32L4R MCU, 120 MHz Cortex-M4, 1 MB Flash

MPNSTM32L4R9ZGJ6
Active

ST STM32L4R series, STM32L4R9ZGJ6, 32-bit ARM Cortex-M4 MCU, 120 MHz, 1 MB Flash, 640 KB SRAM, 112 I/O, USB OTG, 1.71 V to 3.6 V, -40°C to 85°C, 144-UFBGA.

$17.9600Ref. price · indicative, final on quote
STMicroelectronics STM32L4R9ZGJ6 datasheet (PDF)
Packaging144-UFBGA
RoHSROHS3 Compliant
SeriesSTM32L4R
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L4R9ZGJ6 specifications
ParameterValue
SeriesSTM32L4R
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed120MHz
PackageTray
RAM size640K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, LCD, 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 size1MB (1M x 8)

Product details

120 MHz Cortex-M4 with 1 MB Flash — what the bench sees

It's built for applications that need a balance of processing throughput and low power — think graphics-enabled wearables, industrial sensor fusion, or battery-operated data loggers that also run a display. The 112 I/O lines give you room for parallel LCD interfaces or multiple sensor buses without a port expander.

Peripherals and connectivity — USB OTG, CAN, and more

Package and mounting — 144-UFBGA layout notes

The 144-UFBGA (10x10 mm) package is a fine-pitch BGA — surface-mount only, no socket.

It's ROHS3 compliant.

Frequently asked questions

Does STM32L4R9ZGJ6 support USB OTG?

Yes — the connectivity list includes USB OTG, so it can act as either USB host or device, switching roles on the fly.

When sourcing STM32L4R9ZGJ6, what's the closest functional second-source?

The STM32L151CBU6A is a different series (STM32L1) with a Cortex-M3 core at 32 MHz and only 37 I/O — it's not a pin-compatible or functional second source for this part. For a true second source, look at other STM32L4R series variants with the same package and memory map.