HD64F2638F20J Datasheet, PDF (336/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 9 I/O Ports
Port D pin functions in mode 7 are shown in figure 9-17.
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Port D
PD7 (I/O)
PD6 (I/O)
PD5 (I/O)
PD4 (I/O)
PD3 (I/O)
PD2 (I/O)
PD1 (I/O)
PD0 (I/O)
Figure 9-17 Port D Pin Functions (Mode 7)
9.9.4 MOS Input Pull-Up Function
Port D has an on-chip MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used in mode 7, and can be specified as on or off on an individual bit
basis.
When a PDDDR bit is cleared to 0 in mode 7, setting the corresponding PDPCR 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 9-17 summarizes the MOS input pull-up states.
Table 9-17 MOS Input Pull-Up States (Port D)
Modes
Reset
Hardware
Software
Standby Mode Standby Mode
4 to 6
OFF
OFF
OFF
7
ON/OFF
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PDDDR = 0 and PDPCR = 1; otherwise off.
In Other
Operations
OFF
ON/OFF
Page 286 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010