HD64F3642AHV Datasheet, PDF (207/551 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 8 I/O Ports
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
Sleep Subsleep Standby Watch Subactive Active
P32/SO1
P31/SI1
P30/SCK1
Note: *
High-
Retains Retains
impedance previous previous
state
state
High-
Retains Functional
impedance^* previous
state
A high-level signal is output when the MOS pull-up is in the on state.
Functional
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.
PCR3n
0
1
PUCR3n
0
1
*
MOS input pull-up
Off
On
Off
Legend: * Don’t care
Note: n = 2 to 0
Rev. 6.00 Sep 12, 2006 page 185 of 526
REJ09B0326-0600