r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 656

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
10.12.6 Pin Functions
Port D pins also function as the pins for data I/Os. The correspondence between the register
specification and the pin functions is shown below.
• PD7/D15, PD6/D14, PD5/D13, PD4/D12, PD3/D11, PD2/D10, PD1/D9, PD0/D8
Legend:
n = 7 to 0
10.12.7 Port D Input Pull-Up MOS States
Port D 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 mode 7. The input pull-up MOS can be specified as on or off
on a bit-by-bit basis.
In mode 7, when a PDDDR bit is cleared to 0, setting the corresponding PDPCR bit to 1 turns on
the input pull-up MOS for that pin.
Table 10.6 summarizes the input pull-up MOS states.
Table 10.6 Input Pull-Up MOS States for Port D
Legend:
Off:
On/Off: Input pull-up MOS is on when PDDDR = 0 and PDPCR = 1; otherwise off.
Rev. 1.00 Sep. 19, 2008 Page 628 of 1270
REJ09B0466-0100
Operating
mode
EXPE
PDnDDR
Pin function
Mode
1, 2, or 4
7
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, and bit PDnDDR.
Input pull-up MOS is always off.
Reset
Off
Data I/O
1, 2, 4


Hardware
Standby Mode
Off
PDn input
0
0
Software
Standby Mode
Off
On/Off
PDn output
7
1
In Other
Operations
Off
On/Off
Data I/O

1