ST62E25C ST Microelectronics, ST62E25C Datasheet - Page 16

• Manufacturer Part Number: ST62E25C
• Description: (ST62T15C / ST62T25C) 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER
• Manufacturer: ST Microelectronics

ST62T15C/T25C/E25C
CLOCK SYSTEM (Cont’d)
Figure 9. OSG Filtering Principle
Figure 10. OSG Emergency Oscillator Principle
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Emergency
Frequency
Oscillator
Oscillator
Internal
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
Main
Maximum Frequency for the device to work correctly
Actual Quartz Crystal Frequency at OSCin pin
Noise from OSCin
Resulting Internal Frequency
VR001932
VR001933