Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Renesas Electronics/R7FA2A1AB/DAC8/DACPC#0x0
PUMPEN=0
D/A SW Charge Pump Control Register
Charge pump enable
0 (0): Charge pump disable
1 (1): Charge pump enable
These bits are read as 0000000. The write value should be 0000000.
https://github.com/cmsis-svd/cmsis-svd-data