ATSAMC21E16A
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            CoreCortex-M0+, 48 MHz 
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            FamilySAMC21 
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          CMSIS PackSAMC21_DFP
5V ARM Cortex-M0+ based microcontroller with 64KB Flash, 8KB SRAM, 48 MHz, three 16-bit timer/counters, DMA, four SERCOM
| Core | Processor Cortex-M0+ | 
|---|---|
| Maximum Clock Frequency | 48 MHz | 
| Memory Protection Unit | MPU | 
| Floating Point Unit | NO_FPU | 
| Trust Zone | NO_TZ | 
| Digital Signal Processor | NO_DSP | 
| CortexM Vector Extensions | |
| Endian | Little-endian | 
| Features | View features | 
Processor
Cortex-M0+, 48 MHz
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      Core features Nested Vectored Interrupt Controller Nested Vectored Interrupt Controller with 31 interrupt sources DMA Controller 12-channel DMA Controller 
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      I/O External Interrupts 16 External Interrupts Analog to Digital Converter 11-channel x -bit Analog to Digital Converter 
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      Timer Watchdog Timer 1 x Watchdog Timer 
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      Communication Multi-Processor Serial Interface 4 x Multi-Processor Serial Interface Controller Area Network 1 x Controller Area Network 
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      Memory FLASH 0 byte FLASH RWW 0 byte RWW HSRAM 0 byte HSRAM 
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      Power Operating Voltage 2.7 V .. 5.5 V Operating Voltage 
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      Spec Operating Temperature Range -40 °C .. +125 °C Operating Temperature Range 
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      Package Quad Flat No-Lead 32-pad Quad Flat No-Lead Quad Flat Package 32-lead Quad Flat Package