1 Configuration Summary

Table 1-1. SAM D20 Device-Specific Features
DeviceFlash (KB)SRAM (KB)
ATSAMD20E14162
ATSAMD20E15324
ATSAMD20E16648
ATSAMD20E1712816
ATSAMD20E1825632
ATSAMD20G14162
ATSAMD20G15324
ATSAMD20G16648
ATSAMD20G1712816
ATSAMD20G1825632
ATSAMD20J14162
ATSAMD20J15324
ATSAMD20J16648
ATSAMD20J1712816
ATSAMD20J1825632
Table 1-2. SAM D20 Family Features
FeatureSAM D20JSAM 20GSAM D20E
PackagesVQFN64/TQFP64/UFBGA64VQFN48/TQFP48WLCSP45VQFN32/TQFP32WLCSP27
Pins6448453227
General Purpose I/O pins (GPIOs)5238352622
Flash256/128/64/32/16 KB256/128 KB256/128/64/32/16 KB64/32 KB
SRAM32/16/8/4/2 KB32/16 KB32/16/8/4/2 KB8/4 KB
Timer Counter (TC) instances86
Waveform output channels per TC instance2(1)
Serial Communication Interface (SERCOM) instances64(2)
Analog-to-Digital Converter (ADC) channels201410
Analog Comparators (AC)2
Digital-to-Analog Converter (DAC) channels1
Real-Time Counter (RTC)Yes
RTC alarms1
RTC compare valuesOne 32-bit value or two 16-bit values
External Interrupt lines1614
Peripheral Touch Controller (PTC) X and Y lines16x1612x1010x69x6
Maximum CPU frequency48 MHz
Oscillators32.768 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 channels8
SW Debug InterfaceYes
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.