Description
3
2. Configuration Summary 15
3. Ordering Information17
3.1. SAM L21J17 3.2. SAM L21G17 3.3. SAM L21E 18
4. Block Diagram 19
5. Pinout21
5.1. SAM L21J21 5.2. SAM L21G22 5.3. SAM L21E 23
6. Signal Descriptions List 24
7. I/O Multiplexing and Considerations 26
7.1. Multiplexed Signals26 7.2. Analog Connections of Peripherals 28 7.3. Other Functions29
8. Power Supply and Start-Up Considerations 31
8.1. Power Domain Overview31 8.2. Power Supply Considerations 31 8.3. Power-Up34 8.4. Power-On Reset a
Features
- Processor.
- ARM Cortex-M0+ CPU running at up to 48MHz.
- Single-cycle hardware multiplier.
- Micro Trace Buffer.
- Memories.
- 32/64/128/256KB in-system self-programmable Flash.
- 1/2/4/8KB Flash Read-While-Write section.
- 4/8/16/32KB SRAM Main Memory.
- 2/4/8/8KB SRAM Low power Memory.
- System.
- Power-on reset (POR) and brown-out detection (BOD).
- Internal and external clock options.
- External In.