Overview
The ATSAMD21G18A-AUT is a microcontroller from Microchip Technology, part of the Atmel® | SMART™ SAM D21 series. This device is built around the 32-bit ARM® Cortex®-M0+ processor and is designed for low-power applications. It features a maximum operating frequency of 48MHz and is available in a 48-pin TQFP package. The SAM D21 series is known for its simplicity and intuitive migration between different devices, making it a versatile choice for various embedded systems.
Key Specifications
| Specification | Value |
|---|---|
| Processor | 32-bit ARM® Cortex®-M0+ |
| Operating Frequency | Up to 48MHz |
| Flash Memory | 256KB |
| SRAM | 32KB |
| Package Type | 48-pin TQFP |
| Operating Voltage | 1.62V – 3.63V |
| Temperature Range | -40°C to +85°C |
| Number of I/O Pins | Up to 38 |
| Timer/Counters | Up to 5 (TC) and 3 (TCC) |
| Serial Communication Modules (SERCOM) | Up to 6 |
| Analog-to-Digital Converter (ADC) | Up to 14 channels, 12-bit, 350ksps |
| Digital-to-Analog Converter (DAC) | 1 channel, 10-bit, 350ksps |
Key Features
- In-system programmable Flash and SRAM
- Twelve-channel direct memory access (DMA) controller
- 12-channel Event System for inter-peripheral signaling
- Programmable interrupt controller
- Up to five 16-bit Timer/Counters (TC) and three 24-bit Timer/Counters for Control (TCC)
- Full-speed USB 2.0 embedded host and device interface
- Up to six Serial Communication Modules (SERCOM) configurable as USART, UART, SPI, I2C, SMBus, PMBus, and LIN slave
- Two-channel I2S interface
- Peripheral Touch Controller supporting up to 256 buttons, sliders, wheels, and proximity sensing
- Programmable Watchdog Timer, brown-out detector, and power-on reset
- Two-pin Serial Wire Debug (SWD) program and debug interface
Applications
The ATSAMD21G18A-AUT is suitable for a wide range of applications, including but not limited to:
- Industrial automation and control systems
- Consumer electronics such as smart home devices and wearables
- Automotive systems, including infotainment and control units
- Medical devices requiring low power and high precision
- IoT devices and smart sensors
Q & A
- What is the processor type of the ATSAMD21G18A-AUT?
The ATSAMD21G18A-AUT uses a 32-bit ARM® Cortex®-M0+ processor. - What is the maximum operating frequency of the ATSAMD21G18A-AUT?
The maximum operating frequency is up to 48MHz. - How much Flash and SRAM does the ATSAMD21G18A-AUT have?
The device has 256KB of Flash memory and 32KB of SRAM. - What is the package type of the ATSAMD21G18A-AUT?
The device is available in a 48-pin TQFP package. - What is the operating voltage range of the ATSAMD21G18A-AUT?
The operating voltage range is 1.62V – 3.63V. - How many I/O pins does the ATSAMD21G18A-AUT have?
The device has up to 38 general-purpose I/O pins. - Does the ATSAMD21G18A-AUT support USB?
Yes, it supports full-speed USB 2.0 as both an embedded host and device. - What types of serial communication interfaces are available on the ATSAMD21G18A-AUT?
The device supports up to six Serial Communication Modules (SERCOM) that can be configured as USART, UART, SPI, I2C, SMBus, PMBus, and LIN slave. - Does the ATSAMD21G18A-AUT have a touch controller?
Yes, it includes a Peripheral Touch Controller supporting up to 256 buttons, sliders, wheels, and proximity sensing. - What debug interface does the ATSAMD21G18A-AUT support?
The device supports a two-pin Serial Wire Debug (SWD) program and debug interface.
