Figure 1-1. ATmega168PB Xplained Mini Headers and Connectors
Digital I/O Low (J201)
Digital I/O High (J200)
Power (J202)
Analog I/O (J203)
PC4
PC5
ATmega168PB
Power
Ground
Target I/O
Shared I/Os
PC3
PC2
PC1
PC0
VIN
GND
5V
GND
3V3
RESET
VCC
NC
PD0
PD1
PD2
PD3
PD4
PD5
GND
PD6
PD7
PB0
PB1
PB2
PB3
PB4
PB5
AREF
PC4
PC5
LED / ISP (J204)
CDC TX
CDC RX
External
Clock
SPI
(J204)
CDC UART
(J104)
mEDBG
(ATmega32U4)
Power source
(J300)
Micro USB
Connector
Target power
(J301)
Status
LED
PB5
PB7
User
LED
User
button
ISP (J204)
ISP (J204)
ANALOG (J203)
ANALOG (J203)
DIGITAL J200
DIGITAL J200
Table 1-1. Default Configurations
Function
Default configuration
Other settings
Kit power source (J300)
5.0V USB powered
External input VIN
(
)
Target power (J301)
5.0V USB powered
3.3V from the on-board regulator
(
)
ATmega168PB clock
16MHz mEDBG clock
)
Internal oscillator
Info:
Changing the default settings require modification of the kit using a soldering iron.
1) Details on how to change the power settings are described in
.
2) Details on the mEDBG clock are described in
3) Debugging through debugWIRE may be disabled if the internal oscillator is used.
ATmega168PB Xplained Mini
©
2017 Microchip Technology Inc.
User Guide
DS50002636A-page 5
