HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 195
HD6433640
Manufacturer Part Number
HD6433640
Description
H8/3644 Series Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6433640.pdf
(508 pages)
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8.4.4
Table 8.10 shows the port 3 pin states in each operating mode.
Table 8.10 Port 3 Pin States
Pins
P3
P3
P3
Note: * A high-level signal is output when the MOS pull-up is in the on state.
8.4.5
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
PUCR3
MOS input pull-up
Note: * Don’t care
2
1
0
/SO
/SI
/SCK
n
1
1
(n = 2 to 0)
n
1
Pin States
MOS Input Pull-Up
Reset
High-
impedance
Sleep
Retains
previous
state
Off
0
Subsleep
Retains
previous
state
0
On
1
Standby
High-
impedance*
Off
1
*
Watch
Retains
previous
state
Subactive Active
Functional Functional
187
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