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FR60 MB91460E Series - Microcontrollers - Fujitsu

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4.3. Re-enabling the RC-oscillator and the clock supervisors<br />

<strong>MB91460E</strong> <strong>Series</strong><br />

The initial point of this scenario is that the RC-oscillator and both Main clock and Sub clock supervisor are<br />

disabled.<br />

• The RC-oscillator is always enabled in RUN state. It can only be disabled in STOP, and after wakeup from<br />

STOP it will re-start automatically.<br />

• The Main clock supervisor is enabled by setting MSVE (bit 3 of CSVCR) to ’1’.<br />

• The Sub clock supervisor is enabled by setting SSVE (bit 2 of CSVCR) to ’1’.<br />

Figure 0-10 Timing Diagram: Re-enabling the RC-oscillator and the clock supervisors<br />

PONR<br />

MCLK<br />

SCLK<br />

RCE<br />

RC_CLK<br />

STOP<br />

OSC_STAB<br />

TO_MCLK<br />

TO_SCLK<br />

MSVE<br />

MSEN<br />

SSVE<br />

SSEN<br />

MCLK_STBY<br />

SCLK_STBY<br />

SRST<br />

EXT_RST<br />

EXT_RST_OUT<br />

MCLK_OUT<br />

SCLK_OUT<br />

MCLK_MISSING<br />

SCLK_MISSING<br />

DS705-00002-1v3-E 65

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