Zilog eZ80F92 - Manual (Page 30)

eZ80F92 Development Kit
User Manual
eZ80Acclaim!
®
Development Platform UM013911-0607
26
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 7 x 5 LED matrix device on the eZ80Acclaim!
® Development
Platform is a memory-mapped device that can be used to display informa-
tion, such as programmed alphanumeric characters. For example, the
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