R01UH0823EJ0100 Rev.1.00 Page 212 of 1823
Jul 31, 2019
RX23W Group 10. Clock Frequency Accuracy Measurement Circuit (CAC)
10.2 Register Descriptions
10.2.1 CAC Control Register 0 (CACR0)
CFME Bit (Clock Frequency Measurement Enable)
This bit specifies whether clock frequency measurement is enabled or disabled.
When rewriting this bit, more time is required than other bits for the new value to be reflected in the register. Further
write access to this bit are ignored until the current write access is reflected in the register. Read the bit to confirm that the
rewrite has been reflected in the register.
Address(es): 0008 B000h
b7 b6 b5 b4 b3 b2 b1 b0
———————CFME
Value after reset:
00000000
Bit Symbol Bit Name Description R/W
b0 CFME Clock Frequency Measurement Enable 0: Clock frequency measurement is disabled.
1: Clock frequency measurement is enabled.
R/W
b7 to b1 — Reserved These bits are read as 0. The write value should be 0. R/W
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