PIN-assignment
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myEthernet: assignment
schematic of myEthernet
assignmenttable myEthernet (i...digital input, o...digital output, a...analog input)

Physical pins

Port A (pins PA0:PA7)
• byteout/in - mode
• with or without pullup
• pins 0...3 and 12...15

Port B (pins PB0:PB7)
• byteout/in - mode
• with or without pullup
• pins 4...11

Pins 8-11 SPI - Serial Peripheral Interface
pin 8 ... PCINT12 / OC0B / SS
pin 9 ... PCINT13 / MOSI
pin 10 ... PCINT14 / MISO
pin 11 ... PCINT15 / SCK

Pins 16 / 17 TWI - 2-wire Serial Interface Bus
pin16 ... PCINT17 / SDA
pin17 ... PCINT16 / SCL
• address up to 128 TWI-nodes

Pins 22 / 23 - UART
pin 22 ... RXD0 / PCINT24 – port D, bit 0
• receive data (datainput-pin for UART).
pin 23 ... TXD0 / PCINT25 – port D, bit 1
• transmit data (dataoutput-pin for UART).

Virtual pins

Pins 200...207
• 8 inputs for myTWI temperature sensor

Pin 210
• assigned to port A
• byte-by-byte input and output

Pin 211
• assigned to port B
• byte-by-byte input and output

Pin 1000...3999 SharedRAM
non-permanent memory for information or results of calculations
max 128 byte data:
• Pin 1000...1127 data byte-by-byte, from address 0
• Pin 2000...2063 data word-by-word, from address 0 (not number of the word, but address in the RAM)
• Pin 3000...3031 data dword-by-dword, from address 0 (not number of the dword, but address in the RAM)

Pin 5000...7999 SharedEEPROM
permanent memory for information or results of calculations
max 128 byte data:
• Pin 5000...5127 data byte-by-byte, from address 0
• Pin 6000...6063 data word-by-word, from address 0 (not number of the word, but address in the EEPROM)
• Pin 7000...7031 data dword-by-dword, from address 0 (not number of the dword, but address in the EEPROM)

Addresscombination of virtual pins (SharedRAM)
Byte 1Byte 2Byte 3Byte 4 Byte 5Byte 6Byte 7Byte 8 Byte 9Byte 10Byte 11Byte 12 Byte 13Byte 14Byte 15Byte 16 Byte 17
8Bit 1000100110021003 1004100510061007 1008100910101011 1012101310141015 ...
16Bit 2000200220042006 2008201020122014 ...
200120032005 200720092011 20132015
32Bit 3000300430083012 ...
3001300530093013
300230063010 ...
300330073011 ...