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ATSAMD21G18A-MUT
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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 ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：48-QFN (7x7)
- Package / Case：48-VFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The ATSAMD21G18A-MUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 256KB of in-system programmable Flash memory and 32KB of SRAM. The device supports a supply voltage range of 2.7V to 5.5V and includes 14-channel 12-bit ADCs, one 10-bit DAC, and multiple communication interfaces including CANbus, I2C, LINbus, SPI, and USART. It is housed in a 48-VQFN package with exposed pad.
Feature Summary
- Supports Functional Safety (FuSa) requirements for automotive applications
- Integrates CANbus interface alongside standard serial communication peripherals
- Features advanced analog capabilities with high-resolution data converters
Applications
- Automotive body electronics and control modules
- Industrial controllers requiring functional safety compliance
- Data acquisition systems utilizing multi-channel analog inputs
Procurement Notes
Verify the specific suffix 'MUT' corresponds to the 48-VQFN package and tape-and-reel orientation. Confirm the 5.5V maximum voltage rating aligns with system power design, as this differs from lower-voltage variants. Ensure the Functional Safety qualification status meets project certification requirements before finalizing procurement.
Selection Notes
Select this variant when both CANbus connectivity and a 5.5V operating voltage are required. It is suitable for designs needing 256KB of program storage and extensive analog input channels. Compare against the AU or MU packages if surface mount profile or lead-free tray packaging is preferred over reel-based assembly.
Part Context
This component belongs to the SAM C21 series, which is Microchip's automotive-grade MCU line. It shares architectural similarities with the SAM D21 but offers extended voltage ranges and automotive qualification. The G18 designation indicates the specific memory configuration within this family.
Replacement Considerations
ATSAMD21G18A-AU provides identical functionality in a TQFP package. ATSAMD21G18A-MU offers the same specifications in a QFN tray package. Verify pin compatibility and thermal performance when switching between these package types.
