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| PartNumber | NUC120RE3AN | NUC120RE3AN-04452A | NUC120RE3DN |
| Description | IC MCU 32BIT 128KB FLASH 64LQFP | IC MCU 32BIT 128KB FLASH 64LQFP | |
| Manufacturer | Nuvoton Technology Corporation of America | - | Nuvoton Technology Corporation of America |
| Product Category | Embedded - Microcontrollers | - | Embedded - Microcontrollers |
| Series | NuMicro NUC120 | - | NuMicro NUC120 |
| Packaging | Tray | - | Tray |
| Package Case | 64-LQFP | - | 64-LQFP |
| Operating Temperature | -40°C ~ 85°C (TA) | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | 64-LQFP (7x7) | - | 64-LQFP (7x7) |
| Number of I O | 45 | - | 47 |
| Speed | 50MHz | - | 50MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | ARMR CortexR-M0 | |
| RAM Size | 16K x 8 | - | 16K x 8 |
| Program Memory Type | FLASH | - | FLASH |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, LVD, POR, PS2, PWM, WDT | - | Brown-out Detect/Reset, DMA, I2S, LVD, POR, PS2, PWM, WDT |
| Connectivity | EBI/EMI, I2C, IrDA, SPI, UART/USART, USB | - | I2C, IrDA, SPI, UART/USART, USB |
| Voltage Supply Vcc Vdd | 2.5 V ~ 5.5 V | - | 2.5 V ~ 5.5 V |
| Core Size | 32-Bit | - | 32-Bit |
| Program Memory Size | 128KB (128K x 8) | - | 128KB (128K x 8) |
| Data Converters | A/D 8x12b | - | A/D 8x12b |
| Oscillator Type | Internal | - | Internal |