MCU Mega16U2 Ethernet TX TX RX RX /MASTER−RESET /MASTER−RESET /ERASE_CMD /ERASE_CMD /MASTER−RESET VDDPLL XUSB VDDOUT D+ VDDANA D− VDDOUTMI UOTGID UOTGVBOF USBVCC USBVCCU2 EtherDue_MCU.sch EtherDue_Mega16U2.sch EtherDue_Ethernet.sch Connectors Power Peripherals XUSB TX VDDPLL USBVCC VDDOUT USBVCCU2 D+ RX D− VDDANA UOTGID VDDOUTMI /MASTER−RESET USBVCC UOTGVBOF EtherDue_Connectors.
JTAG Debug Port (SWD) Arduino Headers +3.3V DEBUG401 2 4 6 8 1 +5V 2 100K SP1 100K 100K 100K JTAG_TCK SP2 MISO MISO Vcc SCK MOSI SP3 3 JTAG_TMS SP4 SCK 4 MOSI 1 3 5 7 /MASTER−RESET JP401 R401A SP5 R401B R401C R401D SP6 M04 /MASTER−RESET Reset Gnd 1 2 JTAG_TMS SHIELD401 3 4 JTAG_TCK SCL1 SCL1 SCL1 5 6 7 8 9 10 JTAG_TDO SDA1 SDA1 SDA1 JTAG_TDI AREF AREF AREF +3.
+3.3V +3.3V 1.
AREF +3.3V 1 2 1 2 L201 CLOSED SJ202 1 2 AREF 1 2 MH2029−300Y OPEN C207 SJ203 Reset C206 100nF +3.3V 100nF +3.3V VDDPLL C208 VDDOUT See separate sheet "Power" for details of 100nF VDDOUTMI MCU power decoupling VDDANA 100K /MASTER−RESET R204 +3.
+5V ICSP301 MISO 1 2 SCK 3 4 RESET 5 6 MOSI M02X03 10K R303 CD1206−S D301 21 (OC0A/OC1C/PCINT7)PB7 20 (PCINT6)PB6 24 19 nRESET(PC1/DW) (PCINT5)PB5 R306 18 (T1/PCINT4)PB4 /MASTER−RESET 1K 17 MISO 16 MOSI 15 SCK (PDO/MISO/PCINT3)PB3 C303 22pF XTAL2 2 XTAL2(PC0) (PDI/MOSI/PCINT2)PB2 (SCLK/PCINT1)PB1 XTAL1 1 14 XTAL1 (SS/PCINT0)PB0 AVCC (INT4/ICP1/CLK0)PC7 TXC 7A 16MHz 18pF X301 C304 22pF +5V 32 PWR_FLAG 22 RESET_CMD PWR_FLAG 23 (OC1A/PCINT8)PC6 /ER
MicroSD Card Slot +3.3V U701 1 NC 2 SS1/PWM4 CS# 3 MOSI DI 4 C701 VCC 5 SCK SCK 100nF 6 GND 7 MISO DO 8 RSV CD1 CD1 CD2 CD2 GND1 GND1 GND2 GND2 MICROSD 24AA02E48 EEPROM w/ MAC +5V NB: This device could be run on 3.3V but it happens to be located in a section of the board above a 5V power i2c address 0x50, plane, and it will happily run on 5V.
Vin 5V Regulator +3.3V 3.3V Regulator +5V PWR_FLAG CD1206−S01575 PWR_FLAG PWR_FLAG BUCK_OUT 3 2 VI VO VIN MH2029−300Y 1 C505 BOOST D502 2 POWER_JACK 5 PWR VIN U501 GND 6 BUCK_SW L501 C528 SW 3 4 C502 GNDBREAK EN 1 3 10nF FB L502 BUCK_FB GND 1 C501 GND U502 10K POWERJACK 10uF R503 10uF 25V D501 1N4004 PWR_FLAG LM2734Y 10uH SRR0604−100ML C510 2 47uF 25V U505 NCP1117ST33T3G 100uF 16V D503 SK34A−LTP 7−12V Recommended, 6−20V Possible.
