ATmega168PB Xplained Mini User Guide [USER GUIDE]
42381A-MCU-10/2014
9
2.
Hardware User Guide
2.1
Board Overview
Figure 2-1. ATmega168PB-XMINI Overview
2.2
Clock Distribution
The ATmega32U4 (mEDBG) has an external 16MHz XTAL.
The ATmega32U4 provides an external 16MHz clock to the ATmega168PB (target).
2.3
Headers and Connectors
The board headers and 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. J100 JTAG Header
J100 pin
Signal function
1
JTAG_TCK
