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ATSAMD21G18A-AUT
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Product Detailed Parameters
- Description：IC MCU 32BIT 256KB FLASH 48TQFP
- Series：SAM D21G, Functional Safety (FuSa)
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：ARM® Cortex®-M0+
- Core Size：32-Bit Single-Core
- Speed：48MHz
- Connectivity：I2C, LINbus, SPI, UART/USART, USB
- Peripherals：Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O：38
- Program Memory Size：256KB (256K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：32K x 8
- Voltage - Supply (Vcc/Vdd)：1.62V ~ 3.6V
- Data Converters：A/D 14x12b; D/A 1x10b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：48-TQFP (7x7)
- Package / Case：48-TQFP
- Grade：-
- Qualification：-
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Overview
The ATSAMD21G18A-AUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, designed for functional safety applications. It features 256 KB of in-system programmable flash memory and 32 KB of SRAM. The device operates at clock frequencies up to 48 MHz within an extended temperature range of -40°C to +125°C. It includes integrated peripherals such as USB, DMA, I2S, and multiple communication interfaces including SPI, I2C, and USART.
Feature Summary
- Functional Safety (FuSa) qualification compliant with automotive standards
- Integrated USB Full-Speed controller for connectivity
- Direct Memory Access (DMA) engine for efficient data transfer
- Advanced analog peripherals including high-resolution ADCs
Applications
- Automotive infotainment systems
- Instrumentation requiring functional safety compliance
- Industrial control units
- Consumer electronics with USB connectivity
Procurement Notes
Verify the specific suffix 'AUT' confirms AEC-Q100 Grade 1 qualification and the +125°C operating range. Ensure the package type matches the required footprint, typically TQFP-64 for this variant. Confirm that the functional safety documentation aligns with the target application's safety integrity level requirements before finalizing procurement.
Selection Notes
Select this component when automotive-grade reliability and functional safety certification are mandatory. It is suitable for designs requiring robust USB connectivity and significant code storage. Compare against non-automotive variants if temperature ranges or safety certifications are not critical to the system architecture.
Part Context
This part belongs to the SAM D21G family, which focuses on functional safety for automotive and industrial markets. It shares the Cortex-M0+ core with other SAM D21 series devices but distinguishes itself through extended temperature ratings and automotive qualification. The G-series designation indicates specific pinout and peripheral configurations optimized for these demanding environments.
Replacement Considerations
ATSAMD21G18A-AU is the commercial grade equivalent with lower temperature limits. ATSAMD21J18A-AUT offers more I/O pins in a larger package. Verify pin compatibility and software library support when substituting.
