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Product Detailed Parameters
- Description:IC MCU 32BIT 256KB FLASH 48QFN
- 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 ~ 125°C (TA)
- Mounting Type:Surface Mount
- Supplier Device Package:48-QFN (7x7)
- Package / Case:48-VFQFN Exposed Pad
- Grade:Automotive
- Qualification:AEC-Q100
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Overview
The ATSAMD21G18A-MFT is a 32-bit ARM Cortex-M0+ microcontroller from the SAM D21G Functional Safety series. It features 256KB of Flash memory and 32KB of SRAM, operating at a maximum frequency of 48MHz. The device supports a supply voltage range of 1.6V to 3.6V and includes advanced analog peripherals such as 14-channel 12-bit ADCs and one 10-bit DAC. It is housed in a 48-lead QFN package and is rated for an extended industrial temperature range up to 125°C.
Feature Summary
- Integrated Functional Safety (FuSa) capabilities compliant with automotive safety standards
- Advanced analog subsystem with multiple high-resolution ADCs and a DAC
- Comprehensive connectivity suite including USB, SPI, I2C, UART, and LINbus interfaces
- High-performance 48MHz processing core with DMA support for efficient data handling
Applications
- Automotive body electronics and lighting control systems
- Industrial motor control and sensor interface modules
- Consumer devices requiring functional safety certification
- IoT gateways and smart home controllers
Procurement Notes
Verify the specific suffix MFT confirms the 48-QFN package and 125°C temperature rating against the official datasheet. Ensure design compatibility with the required lead-free and green material specifications. Confirm that the Functional Safety qualification meets the target application's safety integrity level requirements before finalizing procurement.
Selection Notes
Select this component when both Functional Safety compliance and extended temperature operation are mandatory. Compare storage capacity against lower-density variants like the G16 if code size permits. Consider the QFN package constraints for thermal management and PCB layout complexity relative to TQFP alternatives.
Part Context
This part belongs to the SAM D21G family, which extends the standard SAM D21 line with Functional Safety features. It shares the Cortex-M0+ architecture but adds safety mechanisms required for automotive and industrial applications. The G18 designation indicates the 256KB Flash configuration within this safety-focused series.
Replacement Considerations
ATSAMD21G18A-AU offers identical electrical performance in a 48-TQFP package. ATSAMD21G16B-AFT provides similar functionality with reduced memory and AEC-Q100 automotive qualification.
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