ATSAML21J18B-ANT

Overview

The ATSAML21J18B-ANT is an ARM-based microcontroller from the SAML21 series, featuring an ARM Cortex-M0+ core. It integrates 256 kB of Flash program memory and 32 kB of SRAM data RAM within a 64-pin TQFP package. The device operates on a supply voltage range of 1.62 V to 3.63 V and supports a maximum clock frequency of 48 MHz. It provides 51 general-purpose I/O pins and includes a 12-bit ADC with 20 channels. The component is rated for an industrial temperature range of -40°C to +105°C.

Feature Summary

• Integrates ARM Cortex-M0+ processor core for efficient code execution
• Includes 256 kB non-volatile Flash memory and 32 kB static RAM
• Supports multiple communication interfaces including USB, SPI, I2C, LIN, and USART
• Features 12-bit analog-to-digital conversion with 20 available channels

Applications

• Industrial control systems requiring robust interface support
• Consumer electronics utilizing low-power ARM architectures
• Embedded applications needing integrated USB connectivity
• Sensor interfacing solutions leveraging high-channel ADC capabilities

Procurement Notes

Verify the specific suffix ANT corresponds to the 64-TQFP package and industrial temperature grade when sourcing. Confirm RoHS compliance status through official Microchip documentation prior to integration. Ensure design compatibility with the 1.62 V to 3.63 V operating voltage range. Check for any updated errata sheets related to the SAML21 family before finalizing hardware designs.

Selection Notes

Select this model for designs requiring a balance of processing power and peripheral density in a compact surface-mount package. The inclusion of LIN and USB interfaces makes it suitable for automotive-adjacent or connected device applications. Compare against the ATSAML21J18B-AUT if a lower commercial temperature range (-40°C to +85°C) suffices for the environment. Consider pin count requirements carefully as the 64-pin TQFP offers 51 I/O lines.

Part Context

This component belongs to the Microchip SAML21 family, which is optimized for low-power applications using the ARM Cortex-M0+ architecture. The J18 variant specifically denotes the memory configuration of 256 kB Flash and 32 kB RAM. The ANT suffix identifies the physical packaging as a 64-lead Thin Quad Flat Package (TQFP) with an extended industrial temperature rating up to 105°C.

Replacement Considerations

ATSAML21J18B-AUT: Identical electrical specifications but rated for commercial temperature range (-40°C to +85°C). ATSAMD21J18A-AUT: Similar memory and core but part of the SAM D21 series; verify pinout and peripheral compatibility.