ATSAML22N16A-CFUT

Overview

The ATSAML22N16A-CFUT is an ARM microcontroller from the SAML22 family, featuring an ARM Cortex-M0+ core operating at a maximum clock frequency of 32 MHz. It integrates 64 kB of Flash program memory and 8 kB of SRAM data RAM within a TQFP-100 package. The device supports a supply voltage range of 1.62 V to 3.63 V and includes 82 general-purpose I/O pins. Peripheral interfaces include I2C, SPI, UART, and USART. It offers a 12-bit ADC with 20 channels and four timer/counters. The component is rated for an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates ARM Cortex-M0+ processor core for efficient code execution
• Includes hardware security features such as Secure Boot and debug protection
• Supports low-power operation modes including idle, wait, and standby
• Features multiple communication peripherals for system connectivity

Applications

• Industrial control systems requiring secure boot capabilities
• Smart metering applications with low power consumption needs
• Consumer electronics utilizing USB or serial communication interfaces
• Wearable devices benefiting from small form factor and low voltage operation

Procurement Notes

Verify the specific suffix CFUT corresponds to the Tape and Reel packaging configuration when ordering. Confirm that the AEC-Q100 qualification status aligns with automotive requirements if applicable, as standard commercial grades may differ. Ensure compatibility with the target PCB footprint for the TQFP-100 package during procurement planning.

Selection Notes

Select this model when 64 kB of Flash and 8 kB of RAM are sufficient for the application firmware. The TQFP-100 package provides ample I/O count for complex peripheral connections. Consider the 32 MHz speed limit against higher-performance alternatives if real-time processing demands exceed this capacity. Verify voltage domain compatibility with the 1.62 V to 3.63 V operating range.

Part Context

This component belongs to the Microchip SAM L22 series, designed for cost-sensitive and power-efficient embedded applications. The SAML22 family emphasizes security features integrated into the Cortex-M0+ architecture. It serves as a bridge between high-performance MCUs and basic 8-bit controllers, offering 32-bit processing with enhanced security protocols.

Replacement Considerations

Consult official Microchip documentation for direct pin-to-pin replacements within the SAML22 family, such as variants with different memory sizes or package options. Cross-reference datasheets to ensure peripheral compatibility before substituting.