
ST92F124/F150/F250 - RESET AND CLOCK CONTROL UNIT (RCCU)
Figure 65. RCCU General Timing
User program execution
External
Reset
Filtered
External
Reset
CLOCK2
Boot ROM execution
20µs
< 4µs Reset phase
PLL Multiplier
clock
Internal
Reset
PLL switched on by user
PLL selected by user
INTCLK
tBRE
20479 x CLOCK1
PLL Lock-in
time
Exit from RESET
VR02113B
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