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ST72334J2TA/XXX датащи(PDF) 26 Page - STMicroelectronics |
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ST72334J2TA/XXX датащи(HTML) 26 Page - STMicroelectronics |
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26 / 150 page ![]() ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto 26/150 8 SUPPLY, RESET AND CLOCK MANAGEMENT The ST72334J/N-Auto, ST72314J/N-Auto and ST72124J-Auto microcontrollers include a range of utility features for securing the application in crit- ical situations (for example, in case of a power brown-out), and reducing the number of external components. An overview is shown in Figure 11. See Section 15 "ELECTRICAL CHARACTERIS- TICS" on page 108 for more details. Main Features ■ Supply Manager with main supply low voltage detection (LVD) ■ Reset Sequence Manager (RSM) ■ Multi-Oscillator (MO) – 4 Crystal/Ceramic resonator oscillators – 1 External RC oscillator – 1 Internal RC oscillator ■ Clock Security System (CSS) – Clock Filter – Backup Safe Oscillator Figure 11. Clock, Reset and Supply Block Diagram IE D 0 0 0 0 RF RF CRSR CSS WDG fOSC CSS INTERRUPT LVD LOW VOLTAGE DETECTOR (LVD) MULTI- OSCILLATOR (MO) FROM WATCHDOG PERIPHERAL OSC1 RESET VDD VSS RESET SEQUENCE MANAGER (RSM) CLOCK FILTER SAFE OSC CLOCK SECURITY SYSTEM (CSS) OSC2 TO MAIN CLOCK CONTROLLER |
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