Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 496 of 926
REJ09B0283-0300
10.11.6 Port C Input Pull-Up MOS States
Port C 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 modes 3
*
, 4, and 7. Input pull-up MOS can be specified as
on or off on a bit-by-bit basis.
In modes 3
*
, 4, and 7, when a PCDDR bit is cleared to 0, setting the corresponding PCPCR bit to
1 turns on the input pull-up MOS for that pin.
Table 10.4 summarizes the input pull-up MOS states.
Table 10.4 Input Pull-Up MOS States (Port C)
Mode Reset
Hardware
Standby Mode
Software
Standby Mode
In Other
Operations
1, 2, 5, 6 Off Off
3
*
, 4, 7
Off Off
On/Off On/Off
Legend:
Off: Input pull-up MOS is always off.
On/Off: On when PCDDR = 0 and PCPCR = 1; otherwise off.
Note: * Only in H8S/2678R Group.
10.12 Port D
Port D is an 8-bit I/O port that also has other functions. The port D has the following registers.
• Port D data direction register (PDDDR)
• Port D data register (PDDR)
• Port D register (PORTD)
• Port D pull-up MOS control register (PDPCR)