ZIO, Motherboard User Manual
Rev. 2.0
Zilogic Systems
Page 5
Table 2.3.
DIO
Header
Pin #
Header Signal
Signal Type
1
VCC
+5V
2
DO0
TTL Out
3
DO1
TTL Out
4
DO2
TTL Out
5
DO3
TTL Out
6
DO4
TTL Out
7
DO5
TTL Out
8
DO6
TTL Out
9
DO7
TTL Out
10
DIO8
OC
2
11
DIO9
OC
2
12
DIO10
OC
2
13
DIO11
OC
2
14
GND
Ground
1
5V tolerant input
2
Open collector, with 5V pull-up
VCC
(Pin 1)
This is the +5V power supply for the external devices. The supply has
a total current limit of 200mA when powered through USB.
DO
(Pin 2-9)
These are digital output signals. The signal is a 5V logic signal, but the
output can drive a 5V device or 3.3V device with 5V tolerance.
DIO
(Pin 10-13)
These are digital input/output signals. The signal is a 5V logic signal,
but the output can drive a 5V device or 3.3V device with 5V tolerance.
These signals can be used as control and hand-shake signals. The
signals are pulled up to 5V, through a 10K resistor.
GND
(Pin 14)
This is the ground signal. All other signals are referenced to this signal.
4.
PWM
Pinmap
The
PWM
header is terminated with 5 pulse width modulation signals and power supply. Add-on
boards like LED control, motor control can be connected through this header.