OLIMEX© 2017
OLIMEXINO-32U4 user's manual
CHAPTER 7 HARDWARE
7. Introduction to the chapter
In this chapter are presented the connectors that can be found on the board all together with their
pinout. Jumpers functions are described. Notes and info on specific peripherals are presented. Notes
regarding the interfaces are given.
7.1 Battery connector
The battery connector is suitable for 3.7V LiPo batteries. The board has a built-in charger circuit, so
when the main power supply is restored the battery would get recharged automatically.
Pin #
Signal Name
1
VBAT
2
GND
7.2 ICSP pin holes
The 6 pin ICSP header provides interface for custom programming/debugging outside of the
Arduino IDE. Note the pin holes doesn't have a connector mounted over – you have to mount
it/solder it yourself. The pinout can be found in the table below. It is important to check the jumper
configuration for proper use of the ICSP pin hole.
ICSP pin holes
Pin #
Signal name
Pin #
Signal name
1
D14(MISO)
4
D16(MOSI)
2
Vcc
5
RESET
3
D15(SCK)
6
GND
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