HD6412350 Hitachi, HD6412350 Datasheet - Page 404

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Port E pin functions in modes 3 and 7 are shown in figure 9-24.
9.12.4
Port E has a built-in MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used in modes 1, 2, 4, 5, and 6 when 8-bit bus mode is selected, or in
mode 3 or 7, and can be specified as on or off on an individual bit basis.
When a PEDDR bit is cleared to 0 in mode 1, 2, 4, 5, or 6 when 8-bit bus mode is selected, or in
mode 3 or 7, setting the corresponding PEPCR bit to 1 turns on the MOS input pull-up for that pin.
The MOS input pull-up function is in the off state after a power-on reset, and in hardware standby
mode. The prior state is retained after a manual reset, and in software standby mode.
Table 9-22 summarizes the MOS input pull-up states.
Table 9-22 MOS Input Pull-Up States (Port E)
Modes
3, 7
1, 2, 4 to 6 8-bit bus
Legend:
OFF
ON/OFF : On when PEDDR = 0 and PEPCR = 1; otherwise off.
384
MOS Input Pull-Up Function [H8S/2351 Only]
: MOS input pull-up is always off.
16-bit bus
Figure 9-24 Port E Pin Functions (Modes 3 and 7)
Power-On
Reset
OFF
Port E
Hardware
Standby Mode
PE
PE
PE
PE
PE
PE
PE
PE
7
6
5
4
3
2
1
0
Manual
Reset
ON/OFF
OFF
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
Software
Standby Mode
In Other
Operations