Using the STK502 Top Module
2.4JTAG Connector Figure 2-8shows how to connect the JTAG ICE probe on the STK502 board. Figure 2-8.Connecting JTAG ICE to the STK502
The JTAG connector is used for the ATmega169 built-in JTAG interface. The pin out of the connector is shown in Figure 2-9and is compliant with the pin out of the JTAG ICE available from Atmel. Connecting a JTAG ICE to this connector allows On-chip Debug- ging of the ATmega169.
More information about the JTAG ICE and On-chip Debugging can be found in the AVR
JTAG ICE User Guide, which is available at the Atmel web site, www.atmel.com.
Figure 2-9.JTAG Connector
1 2
TCK
TDO
TMS
VTG
TDI
