SAMC21J18A BSP 介绍

手册: https://www.microchip.com/en-us/product/ATSAMC21J18A

Power-on Reset (POR) and Brown-out Detection (BOD)
Internal and external clock options with 48 MHz to 96 MHz Fractional Digital Phase Locked Loop (FDPLL96M)
External Interrupt Controller (EIC) (Interrupt pin debouncing is only available in SAM C20/C21 N)
16 external interrupts
One non-maskable interrupt
Two-pin Serial Wire Debug (SWD) programming, test, and debugging interface

Hardware Divide and Square Root Accelerator (DIVAS)
12-channel Direct Memory Access Controller (DMAC)
12-channel Event System
Up to eight 16-bit Timer/Counters (TC), configurable as either
Two 24-bit and one 16-bit Timer/Counter for Control (TCC), with extended functions
Frequency Meter (The division reference clock is only available in the SAM C21N)
32-bit Real Time Counter (RTC) with clock/calendar function
Watchdog Timer (WDT)
CRC-32 generator
Up to two Controller Area Network (CAN) interfaces in the SAM C21
Up to eight Serial Communication Interfaces (SERCOM), each configurable to operate as USART/I2C/SPI
One Configurable Custom Logic (CCL)
Up to Two 12-bit, 1 Msps Analog-to-Digital Converter (ADC) with up to 12 channels each (20 unique channels)
One 16-bit Sigma-Delta Analog-to-Digital Converter (SDADC) with up to 3 differential channels in the SAM C21
10-bit, 350 ksps Digital-to-Analog Converter (DAC) in the SAM C21
Up to four Analog Comparators (AC) with Window Compare function
Integrated Temperature Sensor in the SAM C21
Peripheral Touch Controller (PTC)
256-Channel capacitive touch