Details

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Parameter	Description	Value/Range
Part Number	Device Part Number	ATSAMD21J18A-AUT
Package	Package Type	100-LQFP
Operating Temperature	Operating Temperature Range	-40掳C to +125掳C
Supply Voltage (VDD)	Supply Voltage Range	1.62V to 3.63V
CPU	Central Processing Unit	ARM? Cortex?-M0+
Clock Speed	Maximum Clock Frequency	48 MHz
Flash Memory	On-chip Flash Memory Size	512 KB
RAM	On-chip RAM Size	128 KB
Analog-to-Digital Converter (ADC)	Number of ADC Channels and Resolution	20 channels, 12-bit
Digital-to-Analog Converter (DAC)	Number of DAC Channels and Resolution	2 channels, 10-bit
Timers	Number of Timers and Types	3 x 32-bit
Serial Communication Interfaces (SCI)	Number of SCI Interfaces and Types	5 x USART
Serial Peripheral Interface (SPI)	Number of SPI Interfaces and Types	3 x SPI
I2C Interface	Number of I2C Interfaces	2
USB Interface	USB Interface Type	USB 2.0 Full Speed
Watchdog Timer (WDT)	Watchdog Timer Features	Yes
Real-Time Counter (RTC)	Real-Time Counter Features	Yes
Power Management	Power Management Features	Low-Power Modes, Brownout Detector
Pin Count	Total Number of Pins	100
Qualification	Automotive Qualification Standard	AEC-Q100
Environmental Compliance	RoHS Compliant	Yes

Instructions for Use

1. Power Supply:

   • Ensure the supply voltage (VDD) is within the specified range of 1.62V to 3.63V.
   • Use appropriate decoupling capacitors to stabilize the power supply.

2. Clock Configuration:

   • Configure the internal or external clock source as per your application requirements.
   • The maximum clock frequency is 48 MHz.

3. Memory Management:

   • Utilize the 512 KB of flash memory and 128 KB of RAM efficiently.
   • Follow the programming guidelines for flash memory to avoid wear-out.

4. Peripheral Configuration:

   • Configure the ADC, DAC, timers, and communication interfaces according to your application needs.
   • Use the provided libraries and example code to simplify configuration.

5. USB Interface:

   • Connect the USB interface to a host device or use it for device-to-device communication.
   • Ensure proper termination and shielding for reliable USB communication.

6. Low-Power Modes:

   • Implement low-power modes to extend battery life in portable applications.
   • Use the watchdog timer and brownout detector to ensure system reliability.

7. Environmental Considerations:

   • Operate the device within the specified temperature range of -40掳C to +125掳C.
   • Ensure compliance with automotive standards and environmental regulations.

8. Testing and Validation:

   • Perform thorough testing and validation to ensure the device meets all functional and performance requirements.
   • Follow the AEC-Q100 qualification standard for automotive applications.

9. Documentation:

   • Refer to the datasheet and user manual for detailed information on pinouts, electrical characteristics, and programming guidelines.
   • Use the development tools and software libraries provided by the manufacturer for easier integration and debugging.

(For reference only)