I/O Circuits and Electrical Characteristics
The following illustration is a simplified diagram of the input/output
circuitry of the bit I/O.
Output
Enable
IO0 ... IO31
33
Ω
10 k
Ω
VCC
→
I
All pins provide overvoltage protection circuits by using suppressor
diodes. They short
‑
circuit external voltage spikes above 6 V to
ground.
I/O circuit
The bit I/O has TTL output/input levels with the following
characteristics.
Electrical characteristics
Parameter
Value
Min.
Max.
Input voltage
High
Low
2.0 V
0 V
5.0 V
0.8 V
Output voltage
High
Low
2.4 V
0 V
5.0 V
0.4 V
Output current
±10 mA
Input current
1)
500 μA
Power-up default
All I/O channels are set to input
mode and to a defined logical
high level by the built-in 10 kΩ
pull-up resistors.
1)
The current direction is shown in the circuit diagram above.
s
Bit I/O
t
DS1103 Hardware Installation and Configuration November 2014
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Содержание DS1103
Страница 1: ...DS1103 PPC Controller Board Hardware Installation and Configuration Release 2014 B November 2014 ...
Страница 10: ...s Contents t 10 s DS1103 Hardware Installation and Configuration November 2014 ...
Страница 28: ...s Before You Start t 28 s DS1103 Hardware Installation and Configuration November 2014 ...
Страница 52: ...s Installing the Hardware t 52 s DS1103 Hardware Installation and Configuration November 2014 ...
Страница 102: ...s Uninstalling the System t 102 s DS1103 Hardware Installation and Configuration November 2014 ...
Страница 160: ...s Mapping of I O Signals t 160 s DS1103 Hardware Installation and Configuration November 2014 ...
Страница 218: ...s Troubleshooting t 218 s DS1103 Hardware Installation and Configuration November 2014 ...
Страница 219: ...Data Sheets DS1103 Hardware Installation and Configuration November 2014 219 t ...
Страница 226: ...s Data Sheets t 226 s DS1103 Hardware Installation and Configuration November 2014 ...
Страница 302: ...s Index t 302 s DS1103 Hardware Installation and Configuration November 2014 ...