ST62T35B ST Microelectronics, ST62T35B Datasheet - Page 20

• Manufacturer Part Number: ST62T35B
• Description: (ST62E35B / ST62T35B) 8-BIT OTP/EPROM MCUs
• Manufacturer: ST Microelectronics

19
ST62T35B/E35B
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