HD6433802H Datasheet, PDF (156/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

8.2.4 Pin States
Table 8.4 shows the port 3 pin states in each operating mode.
Table 8.4 Port 3 Pin States
Pins
Reset
Sleep Subsleep Standby Watch Subactive Active
P3₇/AEVL
P3₆/AEVH
P3₅
P3₄
P3₃
P3₂/TMOFH
P3₁/TMOFL
High-
impedance
Retains Retains High-
Retains Functional
previous previous impedance* previous
state state
state
Note: * A high-level signal is output when the MOS pull-up is in the on state.
Functional
8.2.5 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
0
0
0
1
Off
On
1
*
Off
(n = 7 to 1)
*: Don’t care
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