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R01UH0336EJ0102 Rev.1.02
Page 289 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 8 Reset Controller
8.2.6
Clock Monitor Reset
The clock monitors supervise the various internal clock signals. On detecting
deviation of a clock signal from the expected range, the corresponding monitor
generates a reset.
• CLMA0RES: A failure in the main oscillation circuit is being detected.
• CLMA1RES: A failure in PLL1 is being detected.
• CLMA2RES: A failure in internal OSC is being detected.
Upon a clock monitor reset, the respective reset flags in the RESF register are
set.
These flags are not cleared automatically. They are cleared by
• setting RESFC.RESFC3 = 1 for CLMA0RES, RESFC.RESFC4 = 1 for
CLMA1RES, and RESFC.RESFC5 = 1 for CLMA2RES, respectively.
• SYSRES