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ATSAML21G18B-ANT
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Product Detailed Parameters
- Description：IC MCU 32BIT 256KB 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：256KB (256K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：32K 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 ~ 105°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：48-TQFP (7x7)
- Package / Case：48-TQFP
- Grade：-
- Qualification：-
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Overview
The ATSAML21G18B-ANT is a 32-bit ARM Cortex-M0+ microcontroller from the Microchip SAML21 series. It features 256 KB of Flash memory and 32 KB of SRAM, operating at a maximum clock frequency of 48 MHz. The device is housed in a 48-pin TQFP package with an extended industrial temperature range of -40°C to +105°C. It supports a supply voltage range of 1.6V to 3.6V and includes integrated peripherals such as ADC, DAC, DMA, USB, SPI, I2C, and USART interfaces.
Feature Summary
- Integrates high-performance analog peripherals including a 12-bit ADC and 12-bit DAC for precise signal processing.
- Supports low-power operation with multiple sleep modes and flexible clock sources optimized for battery-powered applications.
- Provides comprehensive connectivity options via hardware interfaces including USB Full-Speed, SPI, I2C, LIN, and USART.
Applications
- Industrial control systems requiring robust communication protocols
- Portable medical devices utilizing analog signal acquisition
- Smart home automation controllers with USB connectivity
Procurement Notes
Verify the complete part number against official Microchip documentation to ensure correct package type (TQFP) and temperature grade (-40°C to +105°C). Confirm RoHS compliance status through current datasheets. Cross-reference ordering information directly with authorized distributors to avoid counterfeit components.
Selection Notes
Select this component when a balance of moderate memory capacity and rich peripheral integration is required. The 48MHz speed suits general-purpose control tasks. Compare against the ATSAMD21 series if functional safety certification is needed, or the ATSAML21J series for higher pin counts and memory.
Part Context
This MCU belongs to the SAML21 family, designed for cost-sensitive applications needing ARM Cortex-M0+ performance. It shares architectural similarities with the SAMD21 but offers specific analog enhancements. The 'ANT' suffix denotes the 48-TQFP package variant within the broader SAML21 product line.
Replacement Considerations
ATSAML21G18B-AUT: Same core specifications but rated for commercial temperature range (-40°C to +85°C). ATSAMD21G18A: Similar architecture but lacks specific SAML21 analog features and may require firmware adaptation.
