Datasheet

11
BIG AVR 6 Development System
MikroElektronika
page
5.0. JTAG Connector
JTAG ICEmkII is a programmer/debugger for AVR microcontrollers provided with a built-in JTAG interface. The JTAG ICEmkII is
primarily intended for use with the AVR StudioSURJUDP7KH-7$*LQWHUIDFHEXLOWLQLQWR$95PLFURFRQWUROOHUVLVDPRGL¿HGYHUVLRQ
of the original JTAG interface, which enables the contents of internal EEPROM and FLASH memory to be altered (programming
microcontrollers).
)LJXUH: JTAG connector
The JTAG connector is directly connected to microcontroller pins so that it is not necessary to perform jumper settings as is the case
with AVRprog and AVR ISPmkII programmers.
The JTAG ICEmkII programmer/
debugger employs a male 2x5
connector to be interfaced to the
development system
)LJXUH: JTAGICE mkII connected to the board
6HULDO((3520
EEPROM (Electrically Erasable Programmable Read-Only Memory) is a built-in memory module used to store data that must be
saved when the power goes off. The 24AA01 circuit can store up to 1Kbit data and uses serial I
2
C connection to communicate with the
microcontroller via PD0 and PD1 or PE4 and PE5 pins. In order to establish such connection between EEPROM and microcontroller, it
is necessary to set switches 5 and 7 on the DIP switch SW14 to the ON position. Switches 6 and 8 may also be used for this purpose,
which depends on which pins you want to use for serial communication.
)LJXUH: Serial EEPROM connection schematic
6HULDO((3520FRQQHFWHGWRWKHPLFURFRQWROOHUYLD3'DQG3'SLQV