2.10 User I/O connector
To set up custom input or output signals to your target, use the user Input/Output (I/O) connector.
The user I/O connector is a standard 10-way 2.54mm pitch box header on the rear of DSTREAM-ST.
Figure 2-8 User I/O connector pinout
Note
When connecting and disconnecting the user I/O port, Arm recommends that all equipment is powered-
down.
User I/O pinout table
Table 2-10 User I/O pinout table
Pin Signal name Pin Signal name
1 Output 1 2 Output 2
3 Output 3 4 Output 4
5 Output 5 6 Input 1
7 Output 6 8 Input 2
9 3.3V (output) 10 GND
Note
• User outputs use the 3.3V LVCMOS standard and have a 100R series resistor for short-circuit
protection.
• User inputs use the 3.3V LVCMOS standard and have a 10K series resistor and 100K pull-up resistor.
The inputs can be safely driven up to a maximum of 5V.
• The 3.3V power output can be used to supply external circuitry up to a maximum current of 150mA.
If an over-current condition occurs, this power output shuts down until the debug unit is reset.
2 Target interface connectors
2.10 User I/O connector
100893_0100_06_en Copyright © 2017–2019 Arm Limited or its affiliates. All rights
reserved.
2-46
Non-Confidential
To Next Page
Loading...
