Atmel SAM D20J / SAM D20G / SAM D20E ARM-Based Microcontroller DATASHEET SUMMARY Description The Atmel® 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 2.14 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 Atmel 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, program execution timing or input capture with time and frequency measurement of digital signals. The TCs can operate in 8- or 16-bit mode, or 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 and 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 twopin 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 while enabling power saving by running each peripheral at its optimal clock frequency. 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, which is the module's ability to wake itself up and wake up its own clock, and hence perform predefined tasks without waking up the CPU. The CPU can then be only woken on a need basis, e.g. a threshold is crossed or a result is ready. The Event System supports synchronous and asynchronous events, allowing peripherals to receive, react to and send events even in standby mode. The Flash program memory can be reprogrammed in-system through the SWD interface. The same interface can be used for non-intrusive on-chip debug of application code. A boot loader running in the device can use any communication interface to download and upgrade the application program in the Flash memory. The Atmel SAM D20 devices are supported with a full suite of program and system development tools, including C compilers, macro assemblers, program debugger/simulators, programmers and evaluation kits. 42129JS–SAM–12/2013 Features z Processor ARM Cortex-M0+ CPU running at up to 48MHz z Single-cycle hardware multiplier Memories z 16/32/64/128/256KB in-system self-programmable flash z 2/4/8/16/32KB SRAM System z Power-on reset (POR) and brown-out detection (BOD) z Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M) z External Interrupt Controller (EIC) z 16 external interrupts z One non-maskable interrupt z Two-pin Serial Wire Debug (SWD) programming, test and debugging interface Low Power z Idle and standby sleep modes z SleepWalking peripherals Peripherals z 8-channel Event System z Up to eight 16-bit Timer/Counters (TC), configurable as either: z z z z z z One 16-bit TC with compare/capture channels One 8-bit TC with compare/capture channels z One 32-bit TC with compare/capture channels, by using two TCs z z z z z z z z z 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: z USART with full-duplex and single-wire half-duplex configuration 2 z I C up to 400kHz z SPI One 12-bit, 350ksps Analog-to-Digital Converter (ADC) with up to 20 channels z Differential and single-ended channels z 1/2x to 16x gain stage z Automatic offset and gain error compensation z Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution 10-bit, 350ksps Digital-to-Analog Converter (DAC) Two Analog Comparators with window compare function Peripheral Touch Controller (PTC) z 256-Channel capacitive touch and proximity sensing z I/O z Up to 52 programmable I/O pins z Packages 64-pin TQFP, QFN 48-pin TQFP, QFN z 32-pin TQFP, QFN z Operating Voltage z 1.62V – 3.63V z Power Consumption z Down to 70µA/MHz in active mode z Down to 8µA running the Peripheral Touch Controller z z Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 2 1. Configuration Summary SAM D20J SAM D20G SAM D20E Number of pins 64 48 32 General Purpose I/O-pins (GPIOs) 52 38 26 Flash 256/128/64/32/16KB 256/128/64/32/16KB 256/128/64/32/16KB SRAM 32/16/8/4/2KB 32/16/8/4/2KB 32/16/8/4/2KB Maximum CPU frequency 48MHz Event System channels 8 8 8 Timer Counter (TC) 8 6 6 Waveform output channels for TC 2 2 2 Serial Communication Interface (SERCOM) 6 6 4 Analog-to-Digital Converter (ADC) channels 20 14 10 Analog comparators 2 2 2 Digital-to-Analog Converter (DAC) channels 1 1 1 Yes Yes Yes 1 1 1 1 32-bit value or 2 16-bit values 1 32-bit value or 2 16-bit values 1 32-bit value or 2 16-bit values 16 16 16 Peripheral Touch Controller (PTC) X and Y lines 16x16 12x10 10x6 Packages QFN TQFP QFN TQFP QFN TQFP Real-Time Counter (RTC) RTC alarms RTC compare values External Interrupt lines 32.768kHz crystal oscillator (XOSC32K) 0.4-32MHz crystal oscillator (XOSC) 32.768kHzinternal oscillator (OSC32K) 32kHz ultra-low-power internal oscillator (OSCULP32K) 8MHz high-accuracy internal oscillator (OSC8M) 48MHz Digital Frequency Locked Loop (DFLL48M) Oscillators SW Debug Interface Yes Yes Yes Watchdog Timer (WDT) Yes Yes Yes Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 3 2. Ordering Information ATSAMD 20 E 14 A ‐ M U T Product Family Package Carrier ATSAMD = General Purpose Microcontroller No character = Tray (Default) T = Tape and Reel Product Series 20 = Cortex M0+ CPU, General Feature Set Package Grade Pin Count U = ‐40 ‐ 85°C Matte Sn Plating E = 32 Pins G = 48 Pins J = 64 Pins Package Type Flash Memory A = TQFP M = QFN C = UBGA U = WLCSP 18 = 256KB 17 = 128KB 16 = 64KB 15 = 32KB 14 = 16KB Device Variant A = Default Variant 2.1 SAM D20E Ordering Code FLASH (bytes) SRAM (bytes) Package ATSAMD20E14A-AU Carrier Type Tray TQFP32 ATSAMD20E14A-AUT Tape & Reel 16K 2K ATSAMD20E14A-MU Tray QFN32 ATSAMD20E14A-MUT Tape & Reel ATSAMD20E15A-AU Tray TQFP32 ATSAMD20E15A-AUT Tape & Reel 32K 4K ATSAMD20E15A-MU Tray QFN32 ATSAMD20E15A-MUT Tape & Reel ATSAMD20E16A-AU Tray TQFP32 ATSAMD20E16A-AUT Tape & Reel 64K 8K ATSAMD20E16A-MU Tray QFN32 ATSAMD20E16A-MUT Tape & Reel ATSAMD20E17A-AU Tray TQFP32 ATSAMD20E17A-AUT Tape & Reel 128K 16K ATSAMD20E17A-MU Tray QFN32 ATSAMD20E17A-MUT Tape & Reel Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 4 Ordering Code FLASH (bytes) SRAM (bytes) Package ATSAMD20E18A-AU Carrier Type Tray TQFP32 ATSAMD20E18A-AUT Tape & Reel 256K 32K ATSAMD20E18A-MU Tray QFN32 ATSAMD20E18A-MUT 2.2 Tape & Reel SAM D20G Ordering Code FLASH (bytes) SRAM (bytes) Package ATSAMD20G14A-AU Carrier Type Tray TQFP48 ATSAMD20G14A-AUT Tape & Reel 16K 2K ATSAMD20G14A-MU Tray QFN48 ATSAMD20G14A-MUT Tape & Reel ATSAMD20G15A-AU Tray TQFP48 ATSAMD20G15A-AUT Tape & Reel 32K 4K ATSAMD20G15A-MU Tray QFN48 ATSAMD20G15A-MUT Tape & Reel ATSAMD20G16A-AU Tray TQFP48 ATSAMD20G16A-AUT Tape & Reel 64K 8K ATSAMD20G16A-MU Tray QFN48 ATSAMD20G16A-MUT Tape & Reel ATSAMD20G17A-AU Tray TQFP48 ATSAMD20G17A-AUT Tape & Reel 128K 16K ATSAMD20G17A-MU Tray QFN48 ATSAMD20G17A-MUT Tape & Reel ATSAMD20G18A-AU Tray TQFP48 ATSAMD20G18A-AUT Tape & Reel 256K 32K ATSAMD20G18A-MU Tray QFN48 ATSAMD20G18A-MUT Tape & Reel Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 5 2.3 SAM D20J Ordering Code FLASH (bytes) SRAM (bytes) Package ATSAMD20J14A-AU Carrier Type Tray TQFP64 ATSAMD20J14A-AUT Tape & Reel 16K 2K ATSAMD20J14A-MU Tray QFN64 ATSAMD20J14A-MUT Tape & Reel ATSAMD20J15A-AU Tray TQFP64 ATSAMD20J15A-AUT Tape & Reel 32K 4K ATSAMD20J15A-MU Tray QFN64 ATSAMD20J15A-MUT Tape & Reel ATSAMD20J16A-AU Tray TQFP64 ATSAMD20J16A-AUT Tape & Reel 64K 8K ATSAMD20J16A-MU Tray QFN64 ATSAMD20J16A-MUT Tape & Reel ATSAMD20J17A-AU Tray TQFP64 ATSAMD20J17A-AUT Tape & Reel 128K 16K ATSAMD20J17A-MU Tray QFN64 ATSAMD20J17A-MUT Tape & Reel ATSAMD20J18A-AU Tray TQFP64 ATSAMD20J18A-AUT Tape & Reel 256K 32K ATSAMD20J18A-MU Tray QFN64 ATSAMD20J18A-MUT Tape & Reel Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 6 3. Block Diagram ARM SINGLE CYCLE IOBUS SWCLK ARM CORTEX-M0+ PROCESSOR Fmax 48MHz SERIAL WIRE SWDIO DEVICE SERVICE UNIT M M HIGH SPEED BUS MATRIX S S NVM 256/128/64/32/16KB CONTROLLERFLASH S S AHB-APB BRIDGE A 32/16/8/4/2KB RAM S AHB-APB BRIDGE C PERIPHERAL ACCESS CONTROLLER AHB-APB BRIDGE B PERIPHERAL ACCESS CONTROLLER PERIPHERAL ACCESS CONTROLLER PORT SYSTEM CONTROLLER VREF BOD33 XIN XOUT XOSC OSC8M DFLL48M POWER MANAGER CLOCK CONTROLLER RESET RESET CONTROLLER GCLK_IO[7:0] SLEEP CONTROLLER WATCHDOG TIMER Notes: 1. WO[1:0] AIN[19:0] ADC 2 ANALOG COMPARATORS GENERIC CLOCK CONTROLLER REAL TIME COUNTER EXTINT[15:0] NMI 8 x TIMER COUNTER 8 x(See Timer Counter Note1) OSC32K EXTERNAL INTERRUPT CONTROLLER VREFA VREFB PORT XOSC32K PIN[3:0] OSCULP32K EVENT SYSTEM XIN32 XOUT32 66xxSERCOM SERCOM AIN[3:0] CMP1:0] VOUT DAC PERIPHERAL TOUCH CONTROLLER VREFP X[15:0] Y[15:0] Some products have different number of SERCOM instances, Timer/Counter instances, PTC signals and ADC signals. Refer to “Configuration Summary” on page 3 for details. Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 7 Pinout 4.1 SAM D20J 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 PB03 PB02 PB01 PB00 PB31 PB30 PA31 PA30 VDDIN VDDCORE GND PA28 RESET PA27 PB23 PB22 4. 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 VDDIO GND PA25 PA24 PA23 PA22 PA21 PA20 PB17 PB16 PA19 PA18 PA17 PA16 VDDIO GND PA08 PA09 PA10 PA11 VDDIO GND PB10 PB11 PB12 PB13 PB14 PB15 PA12 PA13 PA14 PA15 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 PA00 PA01 PA02 PA03 PB04 PB05 GNDANA VDDANA PB06 PB07 PB08 PB09 PA04 PA05 PA06 PA07 DIGITAL PIN ANALOG PIN OSCILLATOR GROUND INPUT SUPPLY REGULATED OUTPUT SUPPLY RESET PIN Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 8 48 47 46 45 44 43 42 41 40 39 38 37 PB03 PB02 PA31 PA30 VDDIN VDDCORE GND PA28 RESET PA27 PB23 PB22 SAM D20G 36 35 34 33 32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 VDDIO GND PA25 PA24 PA23 PA22 PA21 PA20 PA19 PA18 PA17 PA16 13 14 15 16 17 18 19 20 21 22 23 24 PA00 PA01 PA02 PA03 GNDANA VDDANA PB08 PB09 PA04 PA05 PA06 PA07 PA08 PA09 PA10 PA11 VDDIO GND PB10 PB11 PA12 PA13 PA14 PA15 4.2 DIGITAL PIN ANALOG PIN OSCILLATOR GROUND INPUT SUPPLY REGULATED OUTPUT SUPPLY RESET PIN Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 9 32 31 30 29 28 27 26 25 PA31 PA30 VDDIN VDDCORE GND PA28 RESET PA27 SAM D20E 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 PA25 PA24 PA23 PA22 PA19 PA18 PA17 PA16 9 10 11 12 13 14 15 16 PA00 PA01 PA02 PA03 PA04 PA05 PA06 PA07 VDDANA GND PA08 PA09 PA10 PA11 PA14 PA15 4.3 DIGITAL PIN ANALOG PIN OSCILLATOR GROUND INPUT SUPPLY REGULATED OUTPUT SUPPLY RESET PIN Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 10 5. I/O Multiplexing and Considerations 5.1 Multiplexed Signals Each pin is by default controlled by the PORT as a general purpose I/O and alternatively it can be assigned to one of the peripheral functions A, B, C, D, E, F, G or H. To enable a peripheral function on a pin, the Peripheral Multiplexer Enable bit in the Pin Configuration register corresponding to that pin (PINCFGn.PMUXEN, n = 0-31) in the PORT must be written to one. The selection of peripheral function A to H is done by writing to the Peripheral Multiplexing Odd and Even bits in the Peripheral Multiplexing register (PMUXn.PMUXE/O) in the PORT. Refer to !!!CRs_PORT_Top!!! for details on how to configure the I/O multiplexing. Table 5-1 describes the peripheral signals multiplexed to the PORT I/O pins. Table 5-1. PORT Function Multiplexing Pin B(1) A SAM SAM SAM I/O Pin D20E D20G D20J Pin Supply Type EIC REF ADC AC C PTC DAC D E SERCOM(2) F TC(3) G H AC/GCLK 1 1 1 PA00 VDDANA EXTINT[0] SERCOM1/ PAD[0] TC2/ WO[0] 2 2 2 PA01 VDDANA EXTINT[1] SERCOM1/ PAD[1] TC2/ WO[1] 3 3 3 PA02 VDDANA EXTINT[2] AIN[0] Y[0] 4 PA03 VDDANA ADC/VREFA EXTINT[3] AIN[1] DAC/VREFA Y[1] 5 PB04 VDDANA EXTINT[4] AIN[12] Y[10] 6 PB05 VDDANA EXTINT[5] AIN[13] Y[11] 9 PB06 VDDANA EXTINT[6] AIN[14] Y[12] 10 PB07 VDDANA EXTINT[7] AIN[15] Y[13] 7 11 PB08 VDDANA EXTINT[8] AIN[2] Y[14] SERCOM4/ PAD[0] TC4/ WO[0] 8 12 PB09 VDDANA EXTINT[9] AIN[3] Y[15] SERCOM4/ PAD[1] TC4/ WO[1] 5 9 13 PA04 VDDANA EXTINT[4] AIN[4] AIN[0] Y[2] SERCOM0/ PAD[0] TC0/ WO[0] 6 10 14 PA05 VDDANA EXTINT[5] AIN[5] AIN[1] Y[3] SERCOM0/ PAD[1] TC0/ WO[1] 7 11 15 PA06 VDDANA EXTINT[6] AIN[6] AIN[2] Y[4] SERCOM0/ PAD[2] TC1/ WO[0] 8 12 16 PA07 VDDANA EXTINT[7] AIN[7] AIN[3] Y[5] SERCOM0/ PAD[3] TC1/ WO[1] 11 13 17 PA08 VDDIO I2C NMI AIN[16] X[0] SERCOM0/ SERCOM2/ PAD[0] PAD[0] TC0/ WO[0] 12 14 18 PA09 VDDIO I2C EXTINT[9] AIN[17] X[1] SERCOM0/ SERCOM2/ PAD[1] PAD[1] TC0/ WO[1] 13 15 19 PA10 VDDIO EXTINT[10] AIN[18] X[2] SERCOM0/ SERCOM2/ PAD[2] PAD[2] TC1/ WO[0] GCLK_O[4] 14 16 20 PA11 VDDIO EXTINT[11] AIN[19] X[3] SERCOM0/ SERCOM2/ PAD[3] PAD[3] TC1/ WO[1] GCLK_IO[5] 19 23 PB10 VDDIO EXTINT[10] SERCOM4/ PAD[2] TC5/ WO[0] GCLK_IO[4] 20 24 PB11 VDDIO EXTINT[11] SERCOM4/ PAD[3] TC5/ WO[1] GCLK_IO[5] 25 PB12 VDDIO I2C EXTINT[12] X[12] SERCOM4/ PAD[0] TC4/ WO[0] GCLK_IO[6] 26 PB13 VDDIO I2C EXTINT[13] X[13] SERCOM4/ PAD[1] TC4/ WO[1] GCLK_IO[7] 27 PB14 VDDIO EXTINT[14] X[14] SERCOM4/ PAD[2] TC5/ WO[0] GCLK_IO[0] 4 4 ADC/ VREFB VOUT Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 11 Table 5-1. PORT Function Multiplexing (Continued) Pin B(1) A SAM SAM SAM I/O Pin D20E D20G D20J Pin Supply Type EIC REF ADC AC C PTC DAC D E SERCOM(2) F G TC(3) H AC/GCLK SERCOM4/ PAD[3] TC5/ WO[1] GCLK_IO[1] EXTINT[12] SERCOM2/ SERCOM4/ PAD[0] PAD[0] TC2/ WO[0] AC/CMP[0] EXTINT[13] SERCOM2/ SERCOM4/ PAD[1] PAD[1] TC2/ WO[1] AC/CMP[1] VDDIO EXTINT[14] SERCOM2/ SERCOM4/ PAD[2] PAD[2] TC3/ WO[0] GCLK_IO[0] PA15 VDDIO EXTINT[15] SERCOM2/ SERCOM4/ PAD[3] PAD[3] TC3/ WO[1] GCLK_IO[1] 35 PA16 VDDIO I2C EXTINT[0] X[4] SERCOM1/ SERCOM3/ PAD[0] PAD[0] TC2/ WO[0] GCLK_IO[2] 26 36 PA17 VDDIO I2C EXTINT[1] X[5] SERCOM1/ SERCOM3/ PAD[1] PAD[1] TC2/ WO[1] GCLK_IO[3] 19 27 37 PA18 VDDIO EXTINT[2] X[6] SERCOM1/ SERCOM3/ PAD[2] PAD[2] TC3/ WO[0] AC/CMP[0] 20 28 38 PA19 VDDIO EXTINT[3] X[7] SERCOM1/ SERCOM3/ PAD[3] PAD[3] TC3/ WO[1] AC/CMP[1] 39 PB16 VDDIO I2C EXTINT[0] SERCOM5/ PAD[0] TC6/ WO[0] GCLK_IO[2] 40 PB17 VDDIO I2C EXTINT[1] SERCOM5/ PAD[1] TC6/ WO[1] GCLK_IO[3] 29 41 PA20 VDDIO EXTINT[4] X[8] SERCOM5/ SERCOM3/ PAD[2] PAD[2] TC7/ WO[0] GCLK_IO[4] 30 42 PA21 VDDIO EXTINT[5] X[9] SERCOM5/ SERCOM3/ PAD[3] PAD[3] TC7/ WO[1] GCLK_IO[5] 21 31 43 PA22 VDDIO I2C EXTINT[6] X[10] SERCOM3/ SERCOM5/ PAD[0] PAD[0] TC4/ WO[0] GCLK_IO[6] 22 32 44 PA23 VDDIO I2C EXTINT[7] X[11] SERCOM3/ SERCOM5/ PAD[1] PAD[1] TC4/ WO[1] GCLK_IO[7] 23 33 45 PA24 VDDIO EXTINT[12] SERCOM3/ SERCOM5/ PAD[2] PAD[2] TC5/ WO[0] 24 34 46 PA25 VDDIO EXTINT[13] SERCOM3/ SERCOM5/ PAD[3] PAD[3] TC5/ WO[1] 37 49 PB22 VDDIO EXTINT[6] SERCOM5/ PAD[2] TC7/ WO[0] GCLK_IO[0] 38 50 PB23 VDDIO EXTINT[7] SERCOM5/ PAD[3] TC7/ WO[1] GCLK_IO[1] 25 39 51 PA27 VDDIO EXTINT[15] 27 41 53 PA28 VDDIO EXTINT[8] 28 PB15 VDDIO EXTINT[15] 21 29 PA12 VDDIO I2C 22 30 PA13 VDDIO I2C 15 23 31 PA14 16 24 32 17 25 18 X[15] GCLK_IO[0] GCLK_IO[0] 31 45 57 PA30 VDDIO EXTINT[10] SERCOM1/ PAD[2] 32 46 58 PA31 VDDIO EXTINT[11] SERCOM1/ PAD[3] TC1/ WO[1] 59 PB30 VDDIO I2C EXTINT[14] SERCOM5/ PAD[0] TC0/ WO[0] 60 PB31 VDDIO I2C EXTINT[15] SERCOM5/ PAD[1] TC0/ WO[1] 61 PB00 VDDANA EXTINT[0] AIN[8] Y[6] SERCOM5/ PAD[2] TC7/ WO[0] 62 PB01 VDDANA EXTINT[1] AIN[9] Y[7] SERCOM5/ PAD[3] TC7/ WO[1] 47 63 PB02 VDDANA EXTINT[2] AIN[10] Y[8] SERCOM5/ PAD[0] TC6/ WO[0] 48 64 PB03 VDDANA EXTINT[3] AIN[11] Y[9] SERCOM5/ PAD[1] TC6/ WO[1] Note: 1. TC1/ WO[0] SWCLK GCLK_IO[0] SWDIO(4) All analog pin functions are on peripheral function B. Peripheral function B must be selected to disable the digital control of the pin. Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 12 2. 3. 4. Only some pins can be used in SERCOM I2C mode. See the Type column for using a SERCOM pin in I2C mode. Refer to the !!!CRs_ElChar_I2C_Pins!!! for details on the I2C pin characteristics Note that TC6 and TC7 are not supported on the SAM D20G. Refer to “Configuration Summary” on page 3 for details. This function is only activated in the presence of a debugger 5.2 Other Functions 5.2.1 Oscillator Pinout The oscillators are not mapped to the normal PORT functions and their multiplexing are controlled by registers in the System Controller (SYSCTRL). Refer to !!!CRs_SYSCTRL_Top!!! for more information. Oscillator Supply XOSC VDDIO XOSC32K 5.2.2 Signal I/O Pin XIN PA14 XOUT PA15 XIN32 PA00 XOUT32 PA01 VDDANA Serial Wire Debug Interface Pinout After reset, SWCLK functionality is selected for pin PA30 to allow for debugger probe detection. The application software can switch the SWCLK functionality of PA30 to GPIO (or other peripherals) during runtime. PA31, by default, is configured like other normal I/O pins and will automatically switch to SWDIO function when a debugger cold-plugging or hotplugging is detected. When the device is put in debug mode, application software accesses to PA30 and PA31 PORT registers are ignored. Refer to !!!CRs_DSU_Top!!! for more information. Signal Supply I/O Pin SWCLK VDDIO PA30 SWDIO VDDIO PA31 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 13 6. Product Mapping Figure 6-1. SAM D20 Product Mapping Global Memory Space 0x00000000 Code 0x00000000 Internal flash Code 0x20000000 0x00040000 Reserved SRAM 0x1FFFFFFF SRAM 0x20008000 0x20000000 Undefined 0x40000000 AHB-APB Bridge C Internal SRAM 0x42000000 PAC2 0x20008000 0x42000400 Peripherals EVSYS Peripherals 0x42000800 0x40000000 0x43000000 SERCOM0 AHB-APB Bridge A Reserved 0x42000C00 SERCOM1 0x42001000 0x41000000 0x60000000 SERCOM2 AHB-APB Bridge B Undefined 0x42001400 SERCOM3 0x42000000 0x60000200 Reserved SERCOM4 AHB-APB Bridge C 0xE0000000 System 0x42001800 0x42001C00 SERCOM5 0x42FFFFFF 0x42002000 0xFFFFFFFF TC0 System 0x42002400 0xE0000000 TC1 Reserved 0x42002800 0xE000E000 TC2 SCS 0x42002C00 0xE000F000 TC3 Reserved AHB-APB Bridge A 0x40000000 PAC0 0x42003000 0xE00FF000 TC4 ROM Table 0x42003400 0xE0100000 TC5 Reserved 0xFFFFFFFF 0x40000400 0x42003800 TC6 PM 0x40000800 SYSCTRL AHB-APB Bridge B 0x42004800 0x41004000 0x41004400 0x42004C00 PORT EIC 0x41004800 0x40001C00 DAC NVMCTRL RTC 0x40001800 AC DSU WDT Reserved 0x40FFFFFF 0x42004400 0x41002000 0x40001400 ADC PAC1 GCLK 0x40001000 TC7 0x42004000 0x41000000 0x40000C00 0x42003C00 PTC 0x42005000 Reserved 0x41FFFFFF Reserved 0x42FFFFFF This figure represents the full configuration of the Atmel® SAM D20 with maximum flash and SRAM capabilities and a full set of peripherals. Refer to the “Configuration Summary” on page 3 for details. Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 14 7. Processor and Architecture 7.1 Cortex-M0+ Processor The Atmel® SAM D20 implements the ARM® Cortex®-M0+ processor, which is based on the ARMv6 architecture and Thumb®-2 ISA. The Cortex M0+ is 100% instruction set compatible with its predecessor, the Cortex-M0 processor, and upward compatible with the Cortex-M3 and Cortex-M4 processors. The ARM Cortex-M0+ implemented is revision r0p1. For more information, refer to www.arm.com. 7.1.1 Cortex-M0+ Configuration Feature Configurable Option SAM D20 Configuration Interrupts External interrupts 0-32 32 Data endianness Little-endian or big-endian Little-endian SysTick timer Present or absent Present Number of watchpoint comparators 0, 1, 2 2 Number of breakpoint comparators 0, 1, 2, 3, 4 4 Halting debug support Present or absent Present Multiplier Fast or small Fast (single cycle) Single-cycle I/O port Present or absent Present Wake-up interrupt controller Supported or not supported Not supported Vector Table Offset Register Present or absent Present Unprivileged/Privileged support Present or absent Absent Memory Protection Unit Not present or 8-region Not present Reset all registers Present or absent Absent(1) Instruction fetch width 16-bit only or mostly 32-bit 32-bit Note: 1. All software run in privileged mode only The ARM Cortex-M0+ processor has two bus interfaces: z Single 32-bit AMBA® 3 AHB-Lite™ system interface that provides connections to peripherals and all system memory, including flash and RAM z Single 32-bit I/O port bus interfacing to the PORT with one-cycle loads and stores Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 15 8. Packaging Information 8.1 Thermal Considerations 8.1.1 Thermal Resistance Data Table 8-1 summarizes the thermal resistance data depending on the package. Table 8-1. 8.1.2 Thermal Resistance Data Package Type θJA θJC 32-pin TQFP 68°C/W 25.8°C/W 48-pin TQFP 78.8°C/W 12.3°C/W 64-pin TQFP 66.7°C/W 11.9°C/W 32-pin QFN 37.2°C/W 3.1°C/W 48-pin QFN 33°C/W 11.4°C/W 64-pin QFN 33.5°C/W 11.2°C/W Junction Temperature The average chip-junction temperature, TJ, in °C can be obtained from the following equations: Equation 1 T J = T A + ( P D × θ JA ) Equation 2 T J = T A + ( P D × ( θ HEATSINK + θ JC ) ) where: z θJA = package thermal resistance, Junction-to-ambient (°C/W), provided in Table 8-1 z θJC = package thermal resistance, Junction-to-case thermal resistance (°C/W), provided in Table 8-1 z θHEATSINK = cooling device thermal resistance (°C/W), provided in the manufacturer datasheet z PD = device power consumption (W) z TA = ambient temperature (°C) From “Equation 1” , the user can derive the estimated lifetime of the chip and decide if a cooling device is necessary or not. If a cooling device is to be fitted on the chip, “Equation 2” should be used to compute the resulting average chipjunction temperature TJ in °C. Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 16 8.2 Package Drawings 8.2.1 64-pin TQFP Table 8-2. Device and Package Maximum Weight 300 Table 8-3. mg Package Characteristics Moisture Sensitivity Level Table 8-4. MSL3 Package Reference JEDEC Drawing Reference MS-026 JESD97 Classification E3 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 17 8.2.2 64-pin QFN Note: The exposed die attached pad is not connected inside the device. Table 8-5. Device and Package Maximum Weight 200 Table 8-6. mg Package Characteristics Moisture Sensitivity Level Table 8-7. MSL3 Package Reference JEDEC Drawing Reference MO-220 JESD97 Classification E3 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 18 8.2.3 48-pin TQFP Table 8-8. Device and Package Maximum Weight 140 Table 8-9. mg Package Characteristics Moisture Sensitivity Level MSL3 Table 8-10. Package Reference JEDEC Drawing Reference MS-026 JESD97 Classification E3 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 19 8.2.4 48-pin QFN Note: The exposed die attached pad is not connected inside the device. Table 8-11. Device and Package Maximum Weight 140 mg Table 8-12. Package Characteristics Moisture Sensitivity Level MSL3 Table 8-13. Package Reference JEDEC Drawing Reference MO-220 JESD97 Classification E3 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 20 8.2.5 32-pin TQFP Table 8-14. Device and Package Maximum Weight 100 mg Table 8-15. Package Characteristics Moisture Sensitivity Level MSL3 Table 8-16. Package Reference JEDEC Drawing Reference MS-026 JESD97 Classification E3 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 21 8.2.6 32-pin QFN Note: The exposed die attached pad is connected inside the device to GND and GNDANA connected together. Table 8-17. Device and Package Maximum Weight 90 mg Table 8-18. Package Characteristics Moisture Sensitivity Level MSL3 Table 8-19. Package Reference JEDEC Drawing Reference MO-220 JESD97 Classification E3 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 22 8.3 Soldering Profile Table Table 8-20 gives the recommended soldering profile from J-STD-20. Table 8-20. Soldering Profile Profile Feature Green Package Average Ramp-up Rate (217°C to peak) 3°C/s max. Preheat Temperature 175°C ±25°C 150-200°C Time Maintained Above 217°C Time within 5°C of Actual Peak Temperature Peak Temperature Range Ramp-down Rate Time 25°C to Peak Temperature 60-150s 30s 260°C 6°C/s max 8 minutes max. A maximum of three reflow passes is allowed per component. ___REV___217270 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 23 Table of Contents Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Configuration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 2.2 2.3 SAM D20E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SAM D20G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SAM D20J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4. Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 4.2 4.3 SAM D20J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 SAM D20G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 SAM D20E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5. I/O Multiplexing and Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.1 5.2 Multiplexed Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Other Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6. Product Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7. Processor and Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1 Cortex-M0+ Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8. Packaging Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8.1 8.2 8.3 Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Package Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Soldering Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 24 Atmel Corporation 1600 Technology Drive Atmel Asia Limited Unit 01-5 & 16, 19F Atmel Munich GmbH Business Campus Atmel Japan G.K. 16F Shin-Osaki Kangyo Bldg San Jose, CA 95110 BEA Tower, Millennium City 5 Parkring 4 1-6-4 Osaki, Shinagawa-ku USA 418 Kwun Tong Roa D-85748 Garching b. Munich Tokyo 141-0032 Tel: (+1) (408) 441-0311 Kwun Tong, Kowloon GERMANY JAPAN Fax: (+1) (408) 487-2600 HONG KONG Tel: (+49) 89-31970-0 Tel: (+81) (3) 6417-0300 www.atmel.com Tel: (+852) 2245-6100 Fax: (+49) 89-3194621 Fax: (+81) (3) 6417-0370 Fax: (+852) 2722-1369 © 2013 Atmel Corporation. All rights reserved. / Rev.: 42129JS–SAM–12/2013 Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, QTouch®, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. ARM®, Cortex® and others are registered trademarks or trademarks of ARM Ltd. Other terms and product names may be trademarks of others. Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. 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