ATSAM4S4AB-MNR

Overview

The ATSAM4S4AB-MNR is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at a maximum clock frequency of 20 MHz. It integrates 256 KB of flash memory and 64 KB of SRAM. The device features an integrated ADC and DMA controller but lacks a DAC. It supports PWM functionality and provides 34 I/O lines within a 48-pin QFN package (7 mm length). The component operates within a temperature range of -40 °C to 105 °C.

Feature Summary

• Integrates ARM Cortex-M4 processor with hardware floating-point unit support
• Includes direct memory access controller for efficient data transfer management
• Features analog-to-digital conversion capabilities for sensor interfacing
• Supports pulse width modulation for motor control and signal generation

Applications

• Industrial control systems requiring low-speed processing
• Battery-powered devices utilizing low-power modes
• Simple embedded interfaces using UART or SPI protocols
• Basic automation tasks with limited I/O requirements

Procurement Notes

Verify the specific suffix 'MNR' against official Microchip documentation to confirm tape-and-reel packaging status. Ensure the part number matches the exact pin count and package dimensions specified in the datasheet. Cross-reference the manufacturing date code and assembly site information provided in the product notices to guarantee supply chain authenticity and compliance with current environmental standards.

Selection Notes

Select this component when a 20 MHz Cortex-M4 solution is sufficient for the application logic. Compare it against higher-speed variants like the ATSAM4S4BB series if performance requirements exceed 20 MHz. Consider the 48-pin QFN package constraints regarding thermal dissipation and PCB space. Verify that the available I/O count meets the system interface needs without requiring external multiplexers.

Part Context

This part belongs to the SAM4S family of microcontrollers from Microchip Technology. The family utilizes the ARM Cortex-M4 architecture, offering a balance of processing power and energy efficiency. The ATSAM4S4AB variant specifically denotes the 256 KB flash configuration within this series, distinguishing it from other memory sizes available in the same product line.

Replacement Considerations

ATSAM4S4AB-MN is the non-reel equivalent. ATSAM4S4BA-MNR offers higher speed but different pinout.