CHAPTER 12 PORT FUNCTIONS
User’s Manual U12688EJ4V0UM00
382
12.3.6 Port 5
Port 5 is an 8-bit input/output port that can be set to input or output in 1-bit units.
Address
FFFFF00AH
7
P57
P5
6
P56
5
P55
4
P54
3
P53
2
P52
1
P51
0
P50
After reset
Undefined
Bit Position
Bit Name
Function
7 to 0
P5n (n = 7 to 0)
Port 5
Input/output port
In addition to their function as port pins, the port 5 pins can also operate in the control mode (external expansion
mode) as a data bus used when memory is expanded externally.
(1) Operation in control mode
Port
Control Mode
Remark
Block Type
Port 5
P50 to P57
D8 to D15
Data bus in memory expansion
E
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