HD6433937 Datasheet, PDF (176/521 Pages) Hitachi Semiconductor – Hardware Manual

8.7.3 Pin Functions
Table 8-18 shows the port 6 pin functions.
Table 8-18 Port 6 Pin Functions
Pin
P6₇ to P6₀
Pin Functions and Selection Method
The pin function depends on bit PCR6_n in PCR6.
PCR6_n
Pin function
0
P6_n input pin
(n = 7 to 0)
1
P6_n output pin
8.7.4 Pin States
Table 8-19 shows the port 6 pin states in each operating mode.
Table 8-19 Port 6 Pin States
Pins
Reset
Sleep
Subsleep Standby Watch
Subactive
P6₇ to P6₀
High-
Retains
impedance previous
state
Retains
previous
state
High-
Retains
impedance* previous
state
Functional
Note: * A high-level signal is output when the MOS pull-up is in the on state.
Active
Functional
8.7.5 MOS Input Pull-Up
Port 6 has a built-in MOS pull-up function that can be controlled by software. When a PCR6 bit is
cleared to 0, setting the corresponding PUCR6 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.
PCR6_n
0
0
1
PUCR6_n
0
1
*
MOS input pull-up Off
On
Off
(n = 7 to 0)
*: Don’t care
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