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L9663 数据表(PDF) 23 Page - STMicroelectronics |
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L9663 数据表(HTML) 23 Page - STMicroelectronics |
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23 / 106 page ![]() DS11401 Rev 6 23/106 L9663 Power supply 105 Figure 11. Internal oscillator vs external clock frequency If the CLKIN is stuck the device behavior is shown in the figure below: in this case during the detection time the tolerance is still inside the 1% tolerance until the device enters reset (T_CKERD max 260 µs). Figure 12. FLL clock error detection Malfunction detecting area 15.84 16.16 16 possible detection Grey zone: Possible detection Grey zone: No-malfunction detecting area out of specification No-malfunction detecting area spec. condition (1% accuracy) No-malfunction detecting area Malfunction detecting area out of specification CLKIN [MHz] 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 GAPG2710151131PS VB POR RST_CKER T_CKMSK 16 MHz ± 5% 16 MHz ± 1% T_CKERD CLK RESETN CLKIN CLKIN_CFG CKER_DETECT CLK_FLT GAPG2710151214PS |
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