NEC 78K0S/K 1+ Series Application Note page 21

CHAPTER 4 SETTING METHODS
[Example 2] Oscillation of the low-speed internal oscillator
LSRCM
0 0 0 0 0 0 0 0
Note
Oscillation/stop of low-speed internal oscillator
0 Oscillation
Note When oscillation of the low-speed internal oscillator is set to "Cannot be stopped" by using the option byte,
the LSRCM setting is invalid (don't care). For details, refer to 4.1 Option Byte Setting.
The LSRCM register setting value is "00000000 (bits 7 to 1 must be set to 0)".
• Assembly language
MOV LSRCM, #00000000B
• C language
LSRCM = 0b00000000;
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Application Note U18752EJ2V0AN