Pin Functions; Pin States; Mos Input Pull-Up - Hitachi HD6473867 Hardware Manual

8.6.3 Pin Functions

Table 8-15 shows the port 6 pin functions.
Table 8-15 Port 6 Pin Functions
Pin Pin Functions and Selection Method
P6 /SEG The pin function depends on bit PCR6n in PCR6 and bits SGS3 to SGS0 in LPCR.
7 16
to P6 /SEG
0 9
SEG3 to SEGS0

8.6.4 Pin States

Table 8-16 shows the port 6 pin states in each operating mode.
Table 8-16 Port 6 Pin States
Pin Reset
P6 /SEG High-
7 16
to impedance previous
P6 /SEG
0 9
Note: * A high-level signal is output when the MOS pull-up is in the on state.

8.6.5 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
PUCR6
n
MOS input pull-up
PCR6
n
Pin function P6
Sleep Subsleep
Retains Retains
previous
state state
0
0
Off
00**, 010*
0
input pin P6
n
Standby
High-
impedance* previous
0
1
On
158
011**, 1***
1
output pin SEG
n
Watch Subactive
Retains Functional
state
1
*
Off
(n = 7 to 0)
*
output pin
n+9
*: Don't care
Active
Functional
(n = 7 to 0)
*: Don't care