Datasheet

Section 10 I/O Ports
R01UH0309EJ0500 Rev. 5.00 Page 651 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
10.13.7 Port E Input Pull-Up MOS States
Port E has a built-in input pull-up MOS function that can be controlled by software. This input
pull-up MOS function can be used in 8-bit bus mode or in modes 3 and 7. The input pull-up MOS
can be specified as on or off on a bit-by-bit basis. In 8-bit bus mode or in modes 3 and 7, when a
PEDDR bit is cleared to 0, setting the corresponding PEPCR bit to 1 turns on the input pull-up
MOS for that pin.
Table 10.7 summarizes the input pull-up MOS states.
Table 10.7 Input Pull-Up MOS States for Port E
Mode Reset
Hardware
Standby Mode
Software
Standby Mode
In Other
Operations
8-bit bus Off Off On/Off On/Off 1, 2, or 4
16-bit bus Off Off
3 or 7 Off Off On/Off On/Off
[Legend]
Off: Input pull-up MOS is always off.
On/Off: Input pull-up MOS is on when PEDDR = 0 and PEPCR = 1; otherwise off.