h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 287

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Port A MOS Pull-Up Control Register (PAPCR)
PAPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port A 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 LPCR,
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 LPCR and DDR, setting
the corresponding PAPCR bit to 1 turns on the MOS input pull-up for that pin.
PAPCR is initialized by a reset or to H'00, and in hardware standby mode. It retains its prior state
in software standby mode.
Port A Open Drain Control Register (PAODR)
PAODR is an 8-bit readable/writable register that controls whether PMOS is on or off for each
port A pin (PA7 to PA0).
When pins are not address and LCD outputs in accordance with the setting of bits AE3 to AE0 in
PFCR, setting a PAODR bit makes the corresponding port A pin an NMOS open-drain output,
while clearing the bit to 0 makes the pin a CMOS output.
PAODR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
Bit
Initial value :
R/W
Bit
Initial value :
R/W
:
:
:
:
PA7ODR PA6ODR PA5ODR PA4ODR PA3ODR PA2ODR PA1ODR PA0ODR
PA7PCR PA6PCR PA5PCR PA4PCR PA3PCR PA2PCR PA1PCR PA0PCR
R/W
R/W
7
0
7
0
R/W
R/W
6
0
6
0
R/W
R/W
5
0
5
0
R/W
R/W
4
0
4
0
Rev. 5.00 Sep 22, 2005 page 261 of 1136
R/W
R/W
3
0
3
0
R/W
R/W
2
0
2
0
Section 9 I/O Ports
REJ09B0257-0500
R/W
R/W
1
0
1
0
R/W
R/W
0
0
0
0