Mos Input Pull-Up - Hitachi HD6473867 Hardware Manual

8.5.4 Pin States
Table 8-13 shows the port 5 pin states in each operating mode.
Table 8-13 Port 5 Pin States
Pins Reset
P5 /WKP / High-
7 7
SEG to P5 / impedance previous
8 0
WKP
/SEG
0 1
Note: * A high-level signal is output when the MOS pull-up is in the on state.

8.5.5 MOS Input Pull-Up

Port 5 has a built-in MOS input pull-up function that can be controlled by software. When a PCR5
bit is cleared to 0, setting the corresponding PUCR5 bit to 1 turns on the MOS pull-up for that pin.
The MOS pull-up function is in the off state after a reset.
PCR5
n
PUCR5
n
MOS input pull-up
Sleep Subsleep
Retains Retains
previous
state state
0
0
Off
Standby Watch
High- Retains
impedance* previous
state
0
1
On
155
Subactive Active
Functional Functional
1
*
Off
(n = 7 to 0)
*: Don't care