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| PartNumber | ATSAMD20G18A-UUT | ATSAMD20G18A-UNT | ATSAMD20G18A-U |
| Description | ARM Microcontrollers - MCU 45WLCSP,85C TEMP, GREEN, 1.6-3,6V, 48MHZ | 45WLCSP105C TEMP GREEN 1.6-36V 4 SAM D20G | |
| Manufacturer | Microchip | - | - |
| Product Category | ARM Microcontrollers - MCU | - | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | WLCSP-45 | - | - |
| Series | SAMD1/2x | - | - |
| Core | ARM Cortex M0+ | - | - |
| Data Bus Width | 32 bit | - | - |
| Maximum Clock Frequency | 48 MHz | - | - |
| Program Memory Size | 256 kB | - | - |
| Data RAM Size | 32 kB | - | - |
| ADC Resolution | 12 bit | - | - |
| Number of I/Os | 38 I/O | - | - |
| Operating Supply Voltage | 1.62 V to 3.63 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Reel | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | - |
| Brand | Microchip Technology / Atmel | - | - |
| Data RAM Type | SRAM | - | - |
| Interface Type | I2C, SPI, UART, USART | - | - |
| I/O Voltage | 1.2 V | - | - |
| Number of ADC Channels | 14 Channel | - | - |
| Number of Timers/Counters | 6 Timer | - | - |
| Processor Series | SAMD20G | - | - |
| Product Type | ARM Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 5000 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 3.63 V | - | - |
| Supply Voltage Min | 1.62 V | - | - |
| Watchdog Timers | Watchdog Timer | - | - |