ATSAMD21J17 - Uncategorized Microchip - Free user manual and instructions
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| Type of Product | 32-bit Microcontroller |
| Core | ARM Cortex-M0+ |
| Maximum Operating Frequency | 48 MHz |
| Flash Memory | 128 KB |
| SRAM | 16 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Package Type | QFN (48-pin) |
| Temperature Range | -40°C to +85°C |
| Digital I/O Pins | 38 |
| Analog Inputs | 10 (12-bit ADC) |
| Serial Communication Interfaces | 6 SERCOM (UART/USART, SPI, I2C) |
| USB Interface | USB 2.0 Full Speed (Device/Host) |
| Timers/Counters | 3 Timer/Counter modules (TC), 3 Timer/Counter for Control (TCC) |
| Real-Time Counter | 16-bit RTC with alarm |
| Power Consumption (Active) | Typ. 100 µA/MHz at 3.3V |
| Low Power Sleep Modes | Idle, Standby, Backup |
| Debug Interface | Serial Wire Debug (SWD) |
| Maintenance | No user-serviceable parts; handle with ESD precautions |
| Safety | Qualified for industrial applications |
| Spare Parts / Repairability | Replace entire device if faulty; not designed for repair |
| General Information | Ideal for low-power embedded applications |
Frequently Asked Questions - ATSAMD21J17 Microchip
How do I program the ATSAMD21J17?
You can program the ATSAMD21J17 using SWD (Serial Wire Debug) with a programmer like Atmel-ICE or J-Link. Use Atmel Studio or Arduino IDE with appropriate boards.
What is the maximum clock speed?
The maximum operating frequency is 48 MHz, generated from an internal oscillator or external crystal.
Can it run Arduino code?
Yes, the ATSAMD21J17 is supported by Arduino Zero and Feather M0 boards. You can use the Arduino IDE with the appropriate board package.
How many analog inputs does it have?
It has 10 analog inputs with a 12-bit ADC, capable of up to 350 ksps.
What is the power consumption in sleep mode?
In Standby mode, typical consumption is 5 µA. In Backup mode, it drops to 1.5 µA with RTC running.
Does it have a built-in USB?
Yes, it includes a USB 2.0 Full Speed interface that can act as device or host.
What voltage does it require?
The operating voltage range is 1.62 V to 3.63 V. The internal regulator is optimized for 3.3 V operation.
How do I reduce power consumption?
Use the low-power sleep modes (Standby, Backup) and disable unused peripherals. The device also supports event system to wake up on external events.
What development tools are available?
Official tools: Atmel Studio (now Microchip Studio), MPLAB X. Third-party: Arduino IDE, PlatformIO, ARM GCC.
Is it suitable for battery-powered devices?
Absolutely. With low active current (100 µA/MHz) and deep sleep modes (1.5 µA), it is ideal for IoT and portable applications.
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USER MANUAL ATSAMD21J17 Microchip
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Product information
Brand : Microchip
Model : ATSAMD21J17
Category : Uncategorized