Datasheet

Section 9 I/O Ports
Page 250 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
9.6.4 Port A MOS Pull-Up Control Register (PAPCR)
PAPCR controls the function of the port A input pull-up MOS. PAPCR is valid for port input and
SCI input pins.
Bit Bit Name Initial Value R/W Description
7 to
4
— Undefined — Reserved
These bits are undefined and cannot be modified.
3 PA3PCR
*
0 R/W
2 PA2PCR 0 R/W
1 PA1PCR 0 R/W
When a pin function is specified to an input port, setting
the corresponding bit to 1 turns on the input pull-up MOS
for that pin.
0 PA0PCR 0 R/W
Note: * Set PA3PCR to 0 when FADSEL of USB is 1.
9.6.5 Port A Open Drain Control Register (PAODR)
PAODR specifies an output type of port A. PAODR is valid for port output and SCI output pins.
Bit Bit Name Initial Value R/W Description
7 to
4
— Undefined — Reserved
These bits are undefined and cannot be modified.
3 PA3ODR 0 R/W
2 PA2ODR 0 R/W
1 PA1ODR 0 R/W
Setting a PAODR bit to 1 makes the corresponding port A
pin an NMOS open-drain output pin, while clearing the bit
to 0 makes the pin a CMOS output pin.
0 PA0ODR 0 R/W