Pin States; Mos Input Pull-Up - Renesas F-ZTAT H8 Series Hardware Manual

8.4.4

Pin States

Table 8.10 shows the port 3 pin states in each operating mode.
Table 8.10 Port 3 Pin States
Pins Reset
P3 to P3 High-
7 3
impedance
P3 /SO
2 1
P3 /SI
1 1
P3 /SCK
0 1
Note: A high-level signal is output when the MOS pull-up is in the on state.
*
8.4.5

MOS Input Pull-Up

Port 3 has a built-in MOS input pull-up function that can be controlled by software. When a PCR3
bit is cleared to 0, setting the corresponding PUCR3 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.
PCR3
n
PUCR3
n
MOS input pull-up
Legend: * Don't care
Note: n = 7 to 0
Sleep Subsleep
Retains Retains
previous previous
state state
0
0 1
Off On
Standby Watch
High- Retains
impedance* previous
state
1
*
Off
Rev.3.00 Jul. 19, 2007 page 193 of 532
8. I/O Ports
Subactive Active
Functional Functional
REJ09B0397-0300