h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 319

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

9.6.5
Port A has an on-chip MOS input pull-up function that can be controlled by software. MOS input
pull-up can be specified as on or off on an individual bit basis.
In modes 4 to 6, if a pin is in the input state in accordance with the settings in PFCR, in the SCI’s
SCMR, SMR, and SCR, and in DDR, setting the corresponding PAPCR bit to 1 turns on the MOS
input pull-up for that pin.
In mode 7, if a pin is in the input state in accordance with the settings in the SCI’s SCMR, SMR,
and SCR, and in DDR, setting the corresponding PAPCR 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 9-10summarizes the MOS input pull-up states.
Table 9-10 MOS Input Pull-Up States (Port A)
Legend:
OFF:
ON/OFF: On when PADDR = 0 and PAPCR = 1; otherwise off.
Pin States
Address output or
SCI output
Other than above
MOS Input Pull-Up Function
MOS input pull-up is always off.
Reset
OFF
Figure 9-7 Port A Pin Functions (Mode 7)
Hardware
Standby Mode
OFF
Rev. 6.00 Feb 22, 2005 page 259 of 1484
Software
Standby Mode
OFF
ON/OFF
Section 9 I/O Ports
REJ09B0103-0600
In Other
Operations
OFF
ON/OFF