R01UH0823EJ0100 Rev.1.00
Page 446 of 1823
Jul 31, 2019
RX23W Group
21. I/O Ports
21.3.6
Open Drain Control Register 1 (ODR1)
m = 1 to 3, B, C, E
Bits corresponding to port m on the 85 pin-product but which do not exist on a product with fewer than 85 pins are
reserved. Write 0 to these bits.
The PORT3.ODR1.B2 bit is reserved, because the P35 pin is input only.
The bits corresponding to a pin that does not exist or pins with no open-drain output allocation are reserved. A reserved
bit is read as 0. The write value should be 0.
Address(es): PORT1.ODR1 0008 C083h, PORT2.ODR1 0008 C085h, PORT3.ODR1 0008 C087h, PORTB.ODR1 0008 C097h,
PORTC.ODR1 0008 C099h, PORTE.ODR1 0008 C09Dh
b7
b6
b5
b4
b3
b2
b1
b0
B7
B6
B5
B4
B3
B2
B1
B0
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
Pm4 Output Type Select
0: CMOS output
1: N-channel open-drain
R/W
b1
Reserved
This bit is read as 0. The write value should be 0.
R/W
b2
Pm5 Output Type Select
0: CMOS output
1: N-channel open-drain
R/W
b3
Reserved
This bit is read as 0. The write value should be 0.
R/W
b4
Pm6 Output Type Select
0: CMOS output
1: N-channel open-drain
R/W
b5
Reserved
This bit is read as 0. The write value should be 0.
R/W
b6
Pm7 Output Type Select
0: CMOS output
1: N-channel open-drain
R/W
b7
Reserved
This bit is read as 0. The write value should be 0.
R/W
