ATmega168 Xplained Mini User Guide [USER GUIDE]
42250A-MCU-02/2014
10
2. Hardware User Guide
2.1 Board Overview
Figure 2-1. ATmega168XMINIoverview.png
2.2 Clock Distribution
The ATmega32U4 (mEDBG) has an external 16MHz XTAL.
The ATmega32U4 provides an external 16MHz clock to the ATmega168 (target).
2.3 Headers and Connectors
The board connectors.
2.3.1 JTAG (J100)
J100 is the JTAG programming header typically used by the JTAGICE for programming of the ATmega32U4
(mEDBG).
Table 2-1. JTAG
J100 pin Signal function
1 JTAG_TCK
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