Zilog EZ80190 User Manual
Page 29
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eZ80190 Development Kit
User Manual
UM014108-0810
Operational
Description
25
The GPIO Data Register receives inputs or provides outputs for each of
the seven general-purpose port lines, depending on the configuration of
the port. See Table 8.
Reading from the general-purpose port can damage the drivers
used for the general-purpose port and memory. The port can,
however, be used for writing data.
Anode Col 5
X
Anode Col 6
X
Anode Col 6
X
GPIO Output
X
Table 8. General-Purpose Port Data Register
Function
Bit #
7
6
5
4
3
2
1
0
GPIO D0
X
GPIO D1
X
GPIO D2
X
GPIO D3
X
GPIO D4
X
GPIO D5
X
GPIO D6
X
GPIO D7
X
Table 7. LED Anode/General-Purpose Port Output Control Register (Continued)
Function
Bit #
7
6
5
4
3
2
1
0
Caution:
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