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ATSAML21G17B-AUT
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Product Detailed Parameters
- Description：IC MCU 32BIT 128KB FLASH 48TQFP
- Series：SAM L21G, 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, SCI, SPI, UART/USART, USB
- Peripherals：DMA, POR, PWM, WDT
- Number of I/O：37
- Program Memory Size：128KB (128K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：16K x 8
- Voltage - Supply (Vcc/Vdd)：1.62V ~ 3.63V
- Data Converters：A/D 14x12b; D/A 2x12b
- 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 ATSAML21G17B-AUT is a 32-bit microcontroller from the SAM L21 series, featuring an ARM Cortex-M0+ core operating at up to 48MHz. It integrates 128KB of in-system self-programmable Flash and 16KB of SRAM. The device supports a supply voltage range of 1.62V to 3.63V and operates within a temperature range of -40°C to 85°C. It is housed in a 48-TQFP package with 37 available I/O lines.
Feature Summary
- Ultra-low-power architecture consuming under 35 µA/MHz in active mode
- Full-speed USB host and device interface capability
- Advanced analog peripherals including 12-bit ADC and dual-output DAC
- Peripheral Touch Controller (PTC) for capacitive touch sensing
Applications
- Battery-powered wearable devices requiring low power consumption
- Industrial control systems utilizing USB connectivity
- Smart home appliances with touch interface requirements
- Portable medical equipment needing precise analog signal processing
Procurement Notes
Verify the specific suffix 'AUT' against official Microchip documentation to confirm it denotes the commercial temperature grade (-40°C to 85°C) and TQFP-48 packaging. Ensure compatibility with existing board layouts for the 48-pin thin quad flat pack configuration before procurement.
Selection Notes
Select this component when design requirements include integrated USB functionality alongside ultra-low-power operation. It is suitable for applications demanding advanced analog features such as high-resolution ADCs and operational amplifiers within a compact footprint. Consider the 128KB Flash capacity for complex firmware implementations.
Part Context
This MCU belongs to the SAM L21 family, which emphasizes energy efficiency through sophisticated power management technologies. The series supports Sleepwalking capabilities and multiple sleep modes, including Idle, Standby, Backup, and Off, to extend battery life in portable electronic designs.
Replacement Considerations
Cross-reference with other SAM L21 variants like ATSAML21G17B-ANT for package differences or ATSAMD21G17A-AU for pin-compatible alternatives within the same manufacturer portfolio.
