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| PartNumber | NUC140RC1CN | NUC140RD2CN | NUC140RE3AN |
| Description | IC MCU 32BIT 32KB FLASH 64LQFP | IC MCU 32BIT 64KB FLASH 64LQFP | |
| Manufacturer | Nuvoton Technology Corporation of America | Nuvoton Technology Corporation of America | - |
| Product Category | Embedded - Microcontrollers | Embedded - Microcontrollers | - |
| Series | NuMicro NUC140 | NuMicro NUC140 | - |
| Packaging | Tray | Tray | - |
| Package Case | 64-LQFP | 64-LQFP | - |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | - |
| Supplier Device Package | * | * | - |
| Number of I O | 45 | 45 | - |
| Speed | 50MHz | 50MHz | - |
| EEPROM Size | - | - | - |
| Core Processor | ARMR CortexR-M0 | ARMR CortexR-M0 | - |
| RAM Size | 4K x 8 | 8K x 8 | - |
| Program Memory Type | FLASH | FLASH | - |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT | - |
| Connectivity | CAN, EBI/EMI, I2C, IrDA, LIN, SPI, UART/USART, USB | CAN, EBI/EMI, I2C, IrDA, LIN, 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 | 32KB (32K x 8) | 64KB (64K x 8) | - |
| Data Converters | A/D 8x12b | A/D 8x12b | - |
| Oscillator Type | Internal | Internal | - |