MICROCHIP ATSAMD20G18A-MUT

Atmel | SMART SAM D20 is a series of low-power microcontrollers using the 32-bit ARM Cortex-M0+ processor, and ranging from 32- to 64-pins with up to 256KB Flash and 32KB of SRAM. The SAM D20 devices operate at a maximum frequency of 48MHz and reach 2.46 CoreMark/MHz. They are designed for simple and intuitive migration with identical peripheral modules, hex compatible code, identical linear address map and pin compatible migration paths between all devices in the product series. All devices include intelligent and flexible peripherals, Atmel Event System for inter-peripheral signaling, and support for capacitive touch button, slider and wheel user interfaces.

The SAM D20 devices provide the following features: In-system programmable Flash, eight-channel Event System, programmable interrupt controller, up to 52 programmable I/O pins, 32-bit real-time clock and calendar, up to eight 16-bit Timer/Counters (TC). The timer/counters can be configured to perform frequency and waveform generation, accurate program execution timing or input capture with time and frequency measurement of digital signals. The TCs can operate in 8- or 16-bit mode, selected TCs can be cascaded to form a 32-bit TC. The series provide up to six Serial Communication Modules (SERCOM) that each can be configured to act as an USART, UART, SPI, I2C up to 400kHz, up to twenty-channel 350ksps 12-bit ADC with programmable gain and optional oversampling and decimation supporting up to 16-bit resolution, one 10-bit 350ksps DAC, two analog comparators with window mode, Peripheral Touch Controller supporting up to 256 buttons, sliders, wheels and proximity sensing; programmable Watchdog Timer, brown-out detector and power-on reset and two-pin Serial Wire Debug (SWD) program and debug interface.

All devices have accurate and low-power external and internal oscillators. All oscillators can be used as a source for the system clock. Different clock domains can be independently configured to run at different frequencies, enabling power saving by running each peripheral at its optimal clock frequency, and thus maintaining a high CPU frequency while reducing power consumption.

The SAM D20 devices have two software-selectable sleep modes, idle and standby. In idle mode the CPU is stopped while all other functions can be kept running. In standby all clocks and functions are stopped expect those selected to continue running. The device supports SleepWalking. This feature allows the peripheral to wake up from sleep based on predefined conditions, and thus allows the CPU to wake up only when needed.

• Processor ARM Cortex-M0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier
• Memories 16/32/64/128/256KB in-system self-programmable Flash
• 2/4/8/16/32KB SRAM Memory
• System Power-on reset (POR) and brown-out detection (BOD)
• Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M)
• External Interrupt Controller (EIC) 16 external interrupts
• One non-maskable interrupt
• Two-pin Serial Wire Debug (SWD) programming, test and debugging interface
• Low Power Idle and standby sleep modes
• SleepWalking peripherals
• Peripherals 8-channel Event System
• Up to five 16-bit Timer/Counters (TC), configurable as either
• One 16-bit TC with two compare/capture channels
• One 8-bit TC with two compare/capture channels
• One 32-bit TC with two compare/capture channels, by using two TCs
• 32-bit Real Time Counter (RTC) with clock/calendar function
• Watchdog Timer (WDT)
• CRC-32 generator
• Up to six Serial Communication Interfaces (SERCOM), each configurable to operate as either: USART with full-duplex and single-wire half-duplex configuration, Inter-Integrated Circuit (I2C) up to 400kHz, Serial Peripheral Interface (SPI)
• One 12-bit, 350ksps Analog-to-Digital Converter (ADC) with up to 20 channels
• Differential and single-ended input 1/2x to 16x programmable gain stage
• Automatic offset and gain error compensation
• Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution
• Operating Voltage 1.62V – 3.63V
• Power Consumption Down to 70μA/MHz in active mode
• Down to 8μA running the Peripheral Touch Controller