eZ80F92 Development Kit
User Manual
UM013904-0203
PRELIMINARY
Operational Description
25
The GPIO Data Register receives inputs or provides outputs for each of
the seven GPIO Port A lines, depending on the configuration of the port.
See Table 8.
LED Matrix
The one 7x5 LED matrix device on the eZ80
®
Development Platform is a
memory-mapped device that can be used to display information, such as
programmed alphanumeric characters. For example, the LED display
Anode Col 4
X
Anode Col 5
X
Anode Col 6
X
Anode Col 6
X
GPIO Output
X
Table 8. GPIO 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/GPIO Port A Output Control Register (Continued)
Function
Bit #
7
6
5
4
3
2
1
0