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| PartNumber | NUC123ZC2AN1 | NUC123ZD4 | NUC123ZC2AE1 |
| Description | IC MCU 32BIT 36KB FLASH 33QFN | MICROCONTROLLER ARM CORTEX | |
| Manufacturer | Nuvoton Technology Corporation of America | Nuvoton Technology Corporation of America | - |
| Product Category | Embedded - Microcontrollers | Embedded - Microcontrollers | - |
| Series | NuMicro NUC123 | NuMicro NUC123 | - |
| Packaging | Tray | Tray | - |
| Package Case | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | - |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | - |
| Supplier Device Package | * | * | - |
| Number of I O | 20 | 20 | - |
| Speed | 72MHz | 72MHz | - |
| EEPROM Size | - | - | - |
| Core Processor | ARMR CortexR-M0 | ARMR CortexR-M0 | - |
| RAM Size | 12K x 8 | 20K 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 | 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 | 36KB (36K x 8) | 68KB (68K x 8) | - |
| Data Converters | - | - | - |
| Oscillator Type | Internal | Internal | - |