STMicroelectronics STM32L4R9ZIY6TR

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32L4
Packaging Cut Tape (CT) | NULL
Core Processor ARM® Cortex®-M4
Core Size 32-Bit Single-Core
Speed 120MHz
Connectivity CANbus, EBI/EMI, I2C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG
Peripherals Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
Number of I/O 112
Program Memory Size 2MB (2M x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 640K x 8
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V
Data Converters A/D 16x12b; D/A 2x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 144-WLCSP (5.24x5.24)
Package / Case 144-UFBGA, WLCSP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STMicroelectronics STM32L4R9ZIY6TR is an ultra-low-power 32-bit MCU based on the ARM Cortex-M4 core. Operating at 120MHz with 2MB flash and 640KB RAM, it offers exceptional performance for power-sensitive applications. The 144-UFBGA or WLCSP package and 1.71V-3.6V supply range enable compact, battery-powered designs. Integrated LCD controller, DMA, PWM, WDT, and brown-out detection provide a complete feature set for advanced embedded systems.

  • Ultra-low power: 1.71V operation and efficient Cortex-M4 core extend battery life in portable devices.
  • Large memory: 2MB flash and 640KB RAM support complex applications and over-the-air updates.
  • Integrated LCD: On-chip LCD controller eliminates external display driver ICs, reducing cost and size.
  • Comprehensive protection: Brown-out detection and WDT ensure reliable operation in fluctuating power conditions.

Wearable Health Monitors

Ultra-low voltage (1.71V) and LCD controller enable battery-powered devices with always-on displays and sensor processing.

Smart Home Hubs

2MB flash and 640KB RAM support complex IoT protocols and local voice recognition; WDT ensures reliable 24/7 operation.

Portable Medical Devices

Low power consumption and brown-out detection protect critical patient data during battery discharge.

Industrial HMI Panels

Integrated LCD driver and PWM backlight control reduce BOM cost for operator interface terminals.

Energy Harvesting Sensors

1.71V minimum supply allows operation from single-cell solar or thermal harvesters with minimal boost circuitry.

Consumer Audio Equipment

High-speed Cortex-M4 with DMA supports high-fidelity audio processing and effects in portable speakers.

Q: What is the core processor?
A: ARM Cortex-M4 at 120MHz.
Q: What is the supply voltage range?
A: 1.71V to 3.6V, supporting low-power battery operation.
Q: How much flash and RAM?
A: 2MB flash and 640KB RAM.
Q: What package options exist?
A: 144-UFBGA and WLCSP.
Q: What special features are included?
A: LCD controller, DMA, PWM, WDT, and brown-out detection.
Base Product Number : STM32L4R9ZI
120MHz 144-UFBGA 2MB Flash 32-bit MCU 640KB RAM ARM Cortex-M4 DMA IoT LCD Low Power PWM WDT Wearable WLCSP
Q: What is the core processor?
A: ARM Cortex-M4 at 120MHz.
Q: What is the supply voltage range?
A: 1.71V to 3.6V, supporting low-power battery operation.
Q: How much flash and RAM?
A: 2MB flash and 640KB RAM.
Q: What package options exist?
A: 144-UFBGA and WLCSP.
Q: What special features are included?
A: LCD controller, DMA, PWM, WDT, and brown-out detection.