ATSAME51G18A-MU

Overview

The ATSAME51G18A-MU is a Microchip Technology microcontroller based on the ARM Cortex-M4F core, operating at a maximum clock frequency of 120 MHz. It features 256 kB of program memory and 128 kB of data RAM. The device is housed in a QFN-64 package and supports an input/output count of 38 I/O lines. It includes a 12-bit ADC with 14 channels and a 12-bit DAC. The power supply range spans from 1.71 V to 3.6 V, with operation temperatures ranging from -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M4F processor core with hardware floating-point unit for efficient signal processing.
• Provides extensive connectivity through multiple communication interfaces including CAN, LIN, I2C, SPI, USART, and USB.
• Features high-resolution analog conversion capabilities with 14-channel 12-bit ADC and 12-bit DAC outputs.

Applications

• Industrial control systems requiring robust communication protocols
• Consumer electronics utilizing USB connectivity
• Automotive applications meeting AEC-Q100 qualification standards

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to ensure correct package type and temperature grade. Confirm that the requested part matches the exact pinout and memory configuration required for your design. Cross-reference the datasheet revision to ensure compatibility with existing firmware libraries and peripheral drivers.

Selection Notes

Select this component when a balance of processing power and peripheral richness is needed within a compact footprint. The 120 MHz Cortex-M4F core offers significant performance over lower-end M0+ variants while maintaining low power consumption. Ensure the 38 available I/O lines meet system interface requirements before choosing over higher-pin-count alternatives.

Part Context

This device belongs to the ATSAME51 family, designed for high-performance embedded applications. It shares architectural similarities with other members like the ATSAMD51 series but offers distinct memory and I/O configurations tailored for specific market segments. The G18 variant specifically denotes the 256 kB Flash and 128 kB SRAM configuration within this product line.

Replacement Considerations

Direct pin-to-pin replacements may include other ATSAME51 family members with compatible memory sizes, such as ATSAME51J18A-MU, provided the I/O count and package match. Verify functional equivalence regarding peripheral availability and electrical characteristics before substitution.