myAVR myEthernet | Functionality |
Status Configuration Technical doc Quick start Hardware Functionality PINs ISP UART MicroSD Web server pdf Glossary Examples of use Contact Safety guideline |
![]() functional schematic of myEthernet Interfaces und protocols:
Across multiple pin functionalityThe microcontroller ATmega644P is able to send and receive byte-by-byte data across 8 pins. Two groups of 8 pins are specified as portA and portB.
TWI / I²CA serial computer data bus transmitting data above two bidirectional lines. It is possible to address up to 128 nodes.
SPI - Serial Peripheral InterfaceComputer bus for synchronous serial data transmission.There are 4 logic signal lines: • SCLK — Serial Clock (output from master) • MOSI/SIMO — Master Output, Slave Input (output from master) • MISO/SOMI — Master Input, Slave Output (output from slave) • SS — Slave Select (active low; output from master)
UART - Universal Asynchronous Receiver TransmitterSerial data transmission without synchronisation. Receiver and transmitter are synchronised by "send" and "start"-bits.
ISP - In-System-ProgrammingInterface to program a microcontroller in-system. There is no need to seperate the microcontroller from the board.
MicroSD-CardThe myEthernet supports microSD-Cards to access many files and to have a solid medium for storing all kinds of data. All interface functions are controlled by a microcontroller ATmega 644P.
EthernetAny communication and data transfers over network are managed by a ENC28J60 microcontroller. The embedded web server sends and receives data via HTTP-protocol. Lower layer protocols are TCP for handling data transmission, IP to encapsulate data into packets, ICMP for response messages.Schematic and structure![]() schematic of the myEthernet ![]() upside of myEthernet, interfaces and connectors ![]() underside of myEthernet, microcontrollers |