ATSAML11E16A-AF

Overview

The ATSAML11E16A-AF is a 32-bit microcontroller from the SAM L11 series, built on the ARM Cortex-M23 core. It features 64KB of Flash memory and 16KB of SRAM. The device operates at a maximum clock speed of 32MHz with a supply voltage range of 1.62V to 3.63V. It includes ten 12-bit ADC channels and one 10-bit DAC. Connectivity options include I2C, LINbus, SPI, and UART/USART interfaces. The component is housed in a 32-pin TQFP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates Arm TrustZone technology for hardware-based security isolation within the Cortex-M23 architecture.
• Provides ultra-low power performance with dynamic operation as low as 34µA/MHz and standby current down to 200nA.
• Includes comprehensive analog peripherals such as multiple 12-bit ADCs and a 10-bit DAC for signal processing.

Applications

• Secure wearable devices requiring low power consumption and data protection.
• Industrial sensors utilizing LINbus communication and analog input capabilities.
• Battery-operated IoT nodes needing efficient sleep modes and secure boot functionality.

Procurement Notes

Verify the suffix 'AF' indicates the TQFP-32 package and commercial temperature range (-40°C to +85°C). Confirm RoHS compliance status through official Microchip documentation. Ensure design-in compatibility with existing SWD debugging interfaces and power management circuits before finalizing procurement orders.

Selection Notes

Select this model when 64KB program storage and 16KB RAM are required alongside a TQFP-32 footprint. Choose over VQFN variants if through-hole or standard surface-mount reflow profiles favor larger pitch packages. Consider the AF suffix specifically for industrial temperature ranges rather than extended automotive grades.

Part Context

This part belongs to the SAM L11 family, designed for cost-sensitive, secure, and low-power applications. It shares the Cortex-M23 core with other SAM L1x devices but differs in memory size and package type. The ATSAML11E16A-AF provides a balance of processing capability and peripheral richness for embedded control tasks.

Replacement Considerations

ATSAML11E16A-MUT offers identical electrical specifications but uses a 32-VQFN package instead of TQFP-32. ATSAML11E16A-AFKPH may provide different packaging or temperature variations. Verify pinout compatibility and thermal requirements when substituting between package types.