small test/development board for Atmels's SAMD09 ARM Cortex M0+ Microcontroller
see my poject on Hackaday.io for more information.
I build this board to getting started with the SAMD microcontroller family after I made the mistake to try the much bigger SAMD21 first. The SAMD09 used here is he smallest from this family and therefore has the shortest (still 709 p.) datasheet. I think this board will be, as my other microcontroller breakout boards, very useful for an early prototyping phase on breadboard. So far I quite like the SAMD09. If you compare it to the the ATmegas there are a lot more possibilities. Maybe this is the Arduino Nano killer for me. Features
- 3.3V 0.8A LDO (1117-3.3)
- powered from USB, Vin pin (3.6-13.8V) or regulated 3.3V
- on board USB to serial bride IC (CH340)
- reset switch
- SWD programming header
- optional 32kHz crystal (if not needed pins can be used as additional IOs)
- on board user LED (connected to PA02)
- on board power LED (connected to 3.3 rail)
###Partlist:
Part Value Package Comment
A08 0603 User LED connected to PA08
C1 100n C0603
C2 15p C0603 optional
C3 15p C0603 optional
C4 10n C0603
C5 100n C0603
C7 100n C0603
D1 MBR0520LT SOD123 power selection diode
D2 MBR0520LT SOD123 power selection diode
IC1 CH340G SOIC16 USB-UART bridge
IC2 1117-3.3 SOT223 LDO
JP1 1X08_OCTA pin header
JP2 1X08_OCTA pin header
JP5 2X05_1,27B programming pin header
K1 mini USB generic Mini USB connector
PWR 0603 Power LED
Q1 3215 3215 optional external 32kHz crystal
Q2 CSTCRCSTCE CSTCESMALL 12 MHz resonator for CH340G
R1 solder / 0 R0201 PA08 - pin header
R2 solder / 0 R0201 PA09 - pin header
R3 120 / 220 R0603 resistor for power LED
R4 120 / 220 R0603 resistor for user LED
R5 ~10k R0603 pullup for reset
S2 SMDSWITCH Chinese SMD switch
U$1 SAMD09SOIC14 SO14 ARM Cortex M0+ microcontroller
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