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ST72334J2T3 датащи(PDF) 24 Page - STMicroelectronics |
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ST72334J2T3 датащи(HTML) 24 Page - STMicroelectronics |
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24 / 125 page ![]() ST72334J/N, ST72314J/N, ST72124J 24/125 4 SUPPLY, RESET AND CLOCK MANAGEMENT The ST72334J/N, ST72314J/N and ST72124J mi- crocontrollers include a range of utility features for securing the application in critical situations (for example in case of a power brown-out), and re- ducing the number of external components. An overview is shown in Figure 12. Main Features s Supply Manager with Main supply Low voltage detection (LVD) s Reset Sequence Manager (RSM) s Multi-Oscillator (MO) – 4 Crystal/Ceramic resonator oscillators – 1 External RC oscillator – 1 Internal RC oscillator s Clock Security System (CSS) – Clock Filter – Backup Safe Oscillator Figure 12. Clock, Reset and Supply Block Diagram IE D 0 0 0 0 RF RF CRSR CSS WDG fOSC CSS INTER RUPT LVD LOW VOLTAGE DETECTO R (LVD) MULTI- OSCILLATOR (MO) FROM WATCH DOG PERIP HERAL OSC1 RESET VDD VSS RESET SEQUEN CE MANAGER (RSM) CLOCK FILTE R SAFE OSC CLOCK SECUR ITY SYSTE M (CSS) MAIN CLOCK CONTROLLER (MCC) MCO fCPU OSC2 |
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