upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 390

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

14.2.11 Port 12
Remark In input mode: When port 12 (P12) is read, the pin levels at that time are read. Writing to P12 writes the
Note Software pull-up function
(1) Function of P12 pin
port 12 mode register (PM12).
can be read by reading P12 while in output mode.
390
Port 12
Port 12 is a 1-bit I/O port.
Port 12 includes the following alternate function.
Port 12 is a 1-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the
In output mode, the set value is output to port 12 (P12).
When using this port in input mode, the pin status can be read by reading P12. Also, the P12 (output latch) value
When using the alternate-function WAIT pin, set the pin function via the port 12 mode control register (PMC12).
When a reset is input, the settings are initialized to input mode.
After reset:
PU12
In output mode: When port 12 (P12) is read, the P12 values are read. Writing to P12 writes the values to
Pin Name
P120
00H
P120
0
1
7
0
values to that register. This does not affect the input pins.
that register, and those values are immediately output.
R/W
Output 0
Output 1
WAIT
6
0
Alternate Function
Table 14-12. Alternate Function of Port 12
CHAPTER 14 PORT FUNCTION
User’s Manual U12768EJ4V1UD
5
0
Control of Output Data (in Output Mode)
Address: FFFFF018H
I/O
4
0
I/O
3
0
No
PULL
2
0
Note
1
0
Remark
−
P120
0