STMicroelectronics STM32L4R series, ARM Cortex-M4, 32-bit single-core MCU, 120 MHz, 2 MB Flash, 640 KB RAM, 169-UFBGA, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | STM32L4R |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.71V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 120MHz |
| Package | Tray |
| RAM size | 640K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG |
| Number of i (O) | 112 |
| Core processor | ARM® Cortex®-M4 |
| Case | 169-UFBGA |
| Data converters | A/D 16x12b; D/A 2x12b |
| Program memory size | 2MB (2M x 8) |
The 169-ball UFBGA package (7x7 mm) houses the STM32L4R5AII6.
On-chip brown-out detect and POR eliminate external supervisor ICs in many designs.
Connectivity includes CANbus, USB OTG, multiple I²C and SPI interfaces, plus an external memory interface (EBI/EMI) for expanding RAM or Flash off-chip.
ST lists the STM32L4R5AII6 as Active.
The STM32L4R5AII6 runs at 120 MHz from the ARM Cortex-M4 core. At that speed, the Flash needs at least one wait state inserted — the STM32L4R series handles this automatically via the prefetch buffer and ART accelerator, so the designer doesn't need to manage wait states manually in most cases.