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ATSAML21J16B-ANT
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Product Detailed Parameters
- Description：IC MCU 32BIT 64KB FLASH 64TQFP
- Series：SAM L21J
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：ARM® Cortex®-M0+
- Core Size：32-Bit Single-Core
- Speed：48MHz
- Connectivity：I2C, LINbus, SCI, SPI, UART/USART, USB
- Peripherals：DMA, POR, PWM, WDT
- Number of I/O：51
- Program Memory Size：64KB (64K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：8K x 8
- Voltage - Supply (Vcc/Vdd)：1.62V ~ 3.63V
- Data Converters：A/D 20x12b; D/A 2x12b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：64-TQFP (10x10)
- Package / Case：64-TQFP
- Grade：-
- Qualification：-
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Overview
The ATSAML21J16B-ANT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, part of the SAM L21 series. It features 64KB of Flash memory and 8KB of SRAM. The device operates at a maximum frequency of 48MHz with a supply voltage range of 1.62V to 3.63V. It includes 20 channels of 12-bit ADC and one 12-bit DAC. Connectivity options include I2C, LINbus, SPI, UART/USART, and USB. The unit is housed in a 32-TQFP package and supports an operating temperature range of -40°C to +85°C.
Feature Summary
- Integrated Functional Safety (FuSa) capabilities for safety-critical applications
- Advanced analog peripherals including multiple 12-bit ADCs and a 12-bit DAC
- Full-speed USB device interface with built-in transceiver
- Low-power operation with multiple sleep modes and efficient clock management
Applications
- Industrial control systems requiring functional safety compliance
- Medical devices needing precise analog signal acquisition
- Consumer electronics utilizing USB connectivity
- Battery-powered IoT nodes leveraging low-power modes
Procurement Notes
Verify the specific suffix 'ANT' corresponds to the 32-TQFP package and industrial temperature grade during sourcing. Confirm RoHS and REACH compliance status with the manufacturer or authorized distributors. Ensure the selected variant matches the required pin count and thermal specifications for the target PCB design. Cross-reference the datasheet revision to confirm peripheral availability and errata updates.
Selection Notes
Select this component when functional safety certification is required alongside standard SAM D21 performance levels. Compare against the ATSAMD21J16B series if FuSa features are unnecessary, as the L21 series offers enhanced analog precision. Consider the TQFP package for through-hole assembly requirements versus QFN options for space-constrained designs. Evaluate power consumption profiles across different clock sources to optimize battery life in portable applications.
Part Context
This MCU belongs to the SAM L21 family, which extends the popular SAM D21 architecture with added functional safety features and improved analog performance. The L21 series is designed for applications demanding higher reliability and diagnostic capabilities. It shares software compatibility with other Cortex-M0+ MCUs while providing dedicated safety mechanisms such as lockstep cores and memory protection units.
Replacement Considerations
ATSAMD21J16B-MUT: Similar specs but lacks Functional Safety certification; requires package adaptation from QFN to TQFP. ATSAML21J17B-MUT: Higher memory capacity (128KB Flash) in QFN package; not a direct pin-compatible replacement without PCB redesign.
