SAM L22 Family 32-bit ARM Cortex-M0+ Ultra-Low-Power MCU family with Peripheral Touch Controller (PTC), Segment LCD Controller, Advanced Analog, USB and AES Features Operating Conditions 1.62V 3.63V, -40C to +85C, DC up to 32 MHz Core: 32 MHz ARM Cortex -M0+ Single-cycle hardware multiplier Micro Trace Buffer Memory Protection Unit (MPU) Memories 64/128/256 KB in-system self-programmable Flash 2/4/8 KB Flash Read-While-Write section 8/16/32 KB SRAM main memory System Power-on Reset (POR) and programmable Brown-out Detection (BOD) Internal and external clock options External Interrupt Controller (EIC) 16 external interrupts that can use any I/O pin One Non-maskable Interrupt (NMI) on one I/O pin 2-pin Serial Wire Debug (SWD) Low-Power Idle, Standby, Backup, and Off Sleep modes SleepWalking peripherals Battery backup support Two runtime selectable power/performance levels Embedded Buck/LDO regulator supporting on-the-fly selection Active mode: < 50 A/MHz Standby with full retention, RTC and LCD = 3.47 A 2.1 s wake-up time Standby with full retention and RTC: 1.87 A 2.1 s wake-up time Ultra low-power Backup mode with RTC: 490 nA 90 s wake-up time Peripherals Segment LCD controller Up to 8 (4) common and 40 (44) segment terminals to drive 320 (176) segments Static, one-half, one-third, and one-fourth bias Complete Datasheet DS60001465B-page 1 2021 Microchip Technology Inc. and its subsidiaries SAM L22 Family Internal charge pump able to generate VLCD higher than VDDIO 16-channel Direct Memory Access Controller (DMAC) 8-channel Event System Up to four 16-bit Timer/Counters (TC), each configurable as: 16-bit TC with two compare/capture channels 8-bit TC with two compare/capture channels 32-bit TC with two compare/capture channels, by using two TCs One 24-bit Timer/Counters for Control (TCC), with extended functions: Four compare channels with optional complementary output Generation of synchronized pulse width modulation (PWM) pattern across port pins Deterministic fault protection, fast decay and configurable dead-time between complementary output Dithering that increase resolution with up to 5-bit and reduce quantization error PWM Channels using TC and TCC peripherals: Up to four PWM channels on each 24-bit TCC Up to two PWM channels on each 16-bit TC Frequency Meter 32-bit Real-Time Counter (RTC) with Clock/Calendar function 8x32-bit Backup Register Tamper Detection Watchdog Timer (WDT) CRC-32 generator One Full-Speed (12 Mbps) Universal Serial Bus (USB) 2.0 Device Eight endpoints Crystal less operation Up to six Serial Communication Interfaces (SERCOM), each configurable as: USART with full-duplex and single-wire half-duplex configuration ISO7816 2 2 I C up to 3.4 MHz (maximum of 1 High-Speed mode and maximum of 3 Fast mode I C) SPI One AES encryption engine One True Random Generator (TRNG) One Configurable Custom Logic (CCL) One 12-bit, 1 Msps Analog-to-Digital Converter (ADC) with up to 20 channels Differential and single-ended input Oversampling and decimation in hardware to support 13-bit, 14-bit, 15-bit, or 16-bit resolution Two Analog Comparators (AC) with Window Compare function Peripheral Touch Controller (PTC) Up to 256-Channel capacitive touch sensing Maximum Mutual-Cap up to 16x16 channels Maximum Self-Cap up to 24 channels Wake-up on touch in Standby mode Oscillators 32.768 kHz crystal oscillator (XOSC32K) 0.4-32 MHz crystal oscillator (XOSC) 32.768 kHz ultra-low-power internal oscillator (OSCULP32K) 16/12/8/4 MHz high-accuracy internal oscillator (OSC16M) 48 MHz Digital Frequency Locked Loop (DFLL48M) 96 MHz Fractional Digital Phased Locked Loop (FDPLL96M) I/O DS60001465B-page 2 Complete Datasheet 2021 Microchip Technology Inc. and its subsidiaries