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User’s Manual U11969EJ3V0UM00
361
CHAPTER 12 PORT FUNCTION
12.3.7 Port 6
Port 6 is an 8-bit input/output port that can be set in the input or output mode in 1-bit units.
Bit Position
Bit Name
Function
7 to 0
P6n
Port 6
(n = 7 to 0)
I/O port
In addition to the function as a general I/O port, this port also serves as an external address bus for external memory
expansion, when placed in the control mode (external expansion mode).
(1) Operation in control mode
Port
Control Mode
Function in Control Mode
Block Type
Port 6
P60 to P67
A16 to A23
Address bus for external memory expansion
F
Address
FFFFF00CH
7
P67
P6
6
P66
5
P65
4
P64
3
P63
2
P62
1
P61
0
P60
After reset
Undefined
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