ZIO, Motherboard User Manual
Rev. 2.0
Zilogic Systems
Page 7
Pin #
Signal Name
4
ADC 2
5
ADC 3
6
ADC 4
7
ADC 5
8
DAC 0
9
VREF-OUT
10
GND
VCC
(Pin 1)
This is the +5V power supply for the external add-on boards. The
supply has a total current limit of 200mA when powered through
USB.
ADC
(Pin 2-5)
These are analog input signals connected to a 10-bit Analog-to-
Digital Converter. The maximum analog input voltage is 3.0V.
DAC
(Pin 8)
This is analog output signal connected to a 10-bit Digital-to-Analog
Converter. The voltage level can vary from 0V to 5V.
VREF-OUT
(Pin 9)
This is the ADC’s reference voltage.
GND
(Pin 10)
This is the ground signal. All other signals are referenced to this
signal.
