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| PartNumber | ATSAMD20E18A-MU | ATSAMD20E18A-MNT | ATSAMD20E18A-MN |
| Description | ARM Microcontrollers - MCU Cortx-M0+256KB FLASH | ARM Microcontrollers - MCU 32QFN 105C, GREEN,1.6-3.6V,48MHz | ARM Microcontrollers - MCU 32QFN 105C, GREEN,1.6-3.6V,48MHz |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-32 | QFN-32 | QFN-32 |
| Series | SAMD1/2x | SAMD1/2x | SAMD1/2x |
| Core | ARM Cortex M0 | ARM Cortex M0+ | ARM Cortex M0+ |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz |
| Program Memory Size | 256 kB | 256 kB | 256 kB |
| Data RAM Size | 32 kB | 32 kB | 32 kB |
| ADC Resolution | 12 bit | 12 bit | 12 bit |
| Number of I/Os | 26 I/O | 26 I/O | 26 I/O |
| Operating Supply Voltage | 1.8 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 105 C | + 105 C |
| Packaging | Tray | Reel | Tray |
| Program Memory Type | Flash | Flash | Flash |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Interface Type | I2C, SPI, USART | I2C, SPI, UART, USART | I2C, SPI, UART, USART |
| I/O Voltage | 3.3 V | 1.2 V | 1.2 V |
| Moisture Sensitive | Yes | - | Yes |
| Number of ADC Channels | 10 | 10 Channel | 10 Channel |
| Number of Timers/Counters | 6 Timer | 6 Timer | 6 Timer |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 490 | 5000 | 490 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 1.95 V | 3.63 V | 3.63 V |
| Supply Voltage Min | 1.62 V | 1.62 V | 1.62 V |
| Unit Weight | 0.006653 oz | - | 3.880136 oz |
| Product | - | MCU | MCU |
| Data RAM Type | - | SRAM | SRAM |
| Processor Series | - | SAMD20J | SAMD20J |
| Watchdog Timers | - | Watchdog Timer | Watchdog Timer |