R01UH0823EJ0100 Rev.1.00
Page 457 of 1823
Jul 31, 2019
RX23W Group
22. Multi-Function Pin Controller (MPC)
22.2
Register Descriptions
Registers and bits for pins that are not present due to differences according to the package are reserved. Write the value
after a reset when writing to such bits.
22.2.1
Write-Protect Register (PWPR)
PFSWE Bit (PFS Register Write Enable)
Writing to PmnPFS register is enabled only when the PFSWE bit is set to 1.
To set the PFSWE bit to 1, write 1 to the PFSWE bit after writing 0 to the B0WI bit.
B0WI Bit (PFSWE Bit Write Disable)
Writing to the PFSWE bit is enabled only when the B0WI bit is set to 0.
Address(es): 0008 C11Fh
b7
b6
b5
b4
b3
b2
b1
b0
B0WI PFSWE
—
—
—
—
—
—
Value after reset:
1
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b5 to b0
—
Reserved
These bits are read as 0. The write value should be 0.
R/W
b6
PFS Register Write Enable
0: Writing to the PFS register is disabled
1: Writing to the PFS register is enabled
R/W
b7
PFSWE Bit Write Disable
0: Writing to the PFSWE bit is enabled
1: Writing to the PFSWE bit is disabled
R/W