HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 457

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

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 4 to 6 when 8-bit bus mode is selected, or in mode 7,
and can be specified as on or off on an individual bit basis.
When a PEDDR bit is cleared to 0 in mode 4, 5, or 6 when 8-bit bus mode is selected, or in mode
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 reset, and in hardware standby mode.
The prior state is retained in software standby mode.
Table 9.23 summarizes the MOS input pull-up states.
Table 9.23 MOS Input Pull-Up States (Port E)
Modes
7
4 to 6
Legend:
Off:
On/off: On when PEDDR = 0 and PEPCR = 1; otherwise off.
MOS input pull-up is always off.
MOS Input Pull-Up Function
8-bit bus
16-bit bus
Reset
Off
Hardware
Standby Mode
Off
Rev.6.00 Sep. 27, 2007 Page 427 of 1268
Software
Standby Mode
On/off
Off
Section 9 I/O Ports
REJ09B0220-0600
In Other
Operations
On/off
Off