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ST7MC1 データシート(PDF) 257 Page - STMicroelectronics |
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ST7MC1 データシート(HTML) 257 Page - STMicroelectronics |
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257 / 308 page ![]() ST7MC1/ST7MC2 257/308 CLOCK AND TIMING CHARACTERISTICS (Cont’d) 12.5.4 Clock Security System with PLL Table 88. PLL Characteristics Table 89. Clock Detector Characteristics Notes: 1. Data based on characterization results, not tested in production. Symbol Parameter Min Typ Max Unit fOSC PLL input frequency range 7 8 MHz Output Frequency Output frequency when the PLL attain lock. 16 MHz tLock PLL Lock Time (LOCKED = 1) 50 100 µs Jitter Jitter in the output clock 2 % fCPU CPU clock frequency when VCO is con- nected to ground (ICD internal clock or back up oscillator ) 3MHz Symbol Parameter Min Typ Max Unit fDetect Detected Minimum Input Frequency 500 1) KHz tsetup Time needed to detect OSCIN once CKD is enabled 3 µs thold Time needed to detect that OSCIN stops 3 µs |
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