h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 311

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

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.
In modes 4 to 6 with 8-bit-bus mode selected, or in mode 7, if a pin is in the input state in
accordance with the settings in LPCR and PEDDR, 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 9.27 summarizes the MOS input pull-up states.
Table 9.27 MOS Input Pull-Up States (Port E)
Legend:
OFF:
ON/OFF: On when PEDDR = 0, PEPCR = 1, and the pin is not used as a segment driver;
Modes
7
4 to 6
MOS Input Pull-Up Function
8-bit bus
16-bit bus
MOS input pull-up is always off.
otherwise off.
Reset
OFF
Hardware
Standby Mode
OFF
Rev. 5.00 Sep 22, 2005 page 285 of 1136
Software
Standby Mode
ON/OFF
OFF
Section 9 I/O Ports
In Other
Operations
ON/OFF
OFF
REJ09B0257-0500