1 Configuration Summary

Table 1-1. SAM D20 Device-Specific Features
Device Flash (KB) SRAM (KB)
ATSAMD20E14 16 2
ATSAMD20E15 32 4
ATSAMD20E16 64 8
ATSAMD20E17 128 16
ATSAMD20E18 256 32
ATSAMD20G14 16 2
ATSAMD20G15 32 4
ATSAMD20G16 64 8
ATSAMD20G17 128 16
ATSAMD20G18 256 32
ATSAMD20J14 16 2
ATSAMD20J15 32 4
ATSAMD20J16 64 8
ATSAMD20J17 128 16
ATSAMD20J18 256 32
Table 1-2. SAM D20 Family Features
Feature SAM D20J SAM 20G SAM D20E
Packages VQFN64/TQFP64/UFBGA64 VQFN48/TQFP48 WLCSP45 VQFN32/TQFP32 WLCSP27
Pins 64 48 45 32 27
General Purpose I/O pins (GPIOs) 52 38 35 26 22
Flash 256/128/64/32/16 KB 256/128 KB 256/128/64/32/16 KB 64/32 KB
SRAM 32/16/8/4/2 KB 32/16 KB 32/16/8/4/2 KB 8/4 KB
Timer Counter (TC) instances 8 6
Waveform output channels per TC instance 2(1)
Serial Communication Interface (SERCOM) instances 6 4(2)
Analog-to-Digital Converter (ADC) channels 20 14 10
Analog Comparators (AC) 2
Digital-to-Analog Converter (DAC) channels 1
Real-Time Counter (RTC) Yes
RTC alarms 1
RTC compare values One 32-bit value or two 16-bit values
External Interrupt lines 16 14
Peripheral Touch Controller (PTC) X and Y lines 16x16 12x10 10x6 9x6
Maximum CPU frequency 48MHz
Oscillators 32.768 kHz crystal oscillator (XOSC32K)

0.4-32 MHz crystal oscillator (XOSC)

32.768 kHz internal oscillator (OSC32K)

32 kHz ultra low-power internal oscillator (OSCULP32K)

8 MHz high-accuracy internal oscillator (OSC8M)

48 MHz Digital Frequency Locked Loop (DFLL48M)
Event System channels 8
SW Debug Interface Yes
Watchdog Timer (WDT) Yes
Note:
  1. The WLCSP27 package does not contain TC4/WO[1] and TC5/WO[0],TC5/WO[1] outputs.
  2. SERCOM4/SERCOM5 are not available on the VQFN32/TQFP32 and WLCSP27 packages.