CHAPTER 14 PORT FUNCTION
User’s Manual U13850EJ4V0UM
408
14.2.10 Port 11
Port 11 is a 4-bit port. A pull-up resistor can be connected to bits 0 to 3 in 1-bit units (software pull-up function).
P11 can be read/written in 8-/1-bit units.
The on/off of wait function can be switched with a port alternate-function control register (PAC).
Caution
When using the wait function, set BC
DD
to the same potential as EV
DD
.
Figure 14-41. Port 11 (P11)
After reset:
00H
R/W
Address: FFFFF016H
7
6
5
4
3
2
1
0
P11
0
0
0
Undefined
P113
P112
P111
P110
P11n
Control of output data (in output mode) (n = 0 to 3)
0
Outputs 0
1
Outputs 1
Remark
In input mode:
When the P11 register is read, the pin levels at that time are read. Writing to P11
writes the values to that register. This does not affect the input pins.
In output mode: When the P11 register is read, the P11 register’s values are read. Writing to P11
writes the values to that register, and those values are immediately output.
Port 11 includes the following alternate functions.
Table 14-11. Port 11 Alternate Function Pins
Pin Name
Alternate Function
I/O
PULL
Note
Remark
Port 11
P110
A1/WAIT
I/O
Yes
−
P111
A2
P112
A3
P113
A4
Note
Software pull-up function
Содержание MPD703030A
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