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STPM01FTR 数据表(PDF) 13 Page - STMicroelectronics |
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STPM01FTR 数据表(HTML) 13 Page - STMicroelectronics |
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13 / 60 page ![]() STPM01 Electrical characteristics Doc ID 10853 Rev 8 13/60 Crystal oscillator (see circuit Figure 20) II Input current on CLKIN 1 µA RP External resistor 1 4 M Ω CP External capacitors 22 pF fCLK Nominal output frequency 44.194 MHz 88.192 RC oscillator (see circuit Figure 20) ICLKIN Settling current fCLK= 4 MHz 40 60 µA RSET Settling resistor 12 k Ω tJIT Frequency jitter 1 ns On chip reference voltage VREF Reference voltage 1.23 V Reference accuracy ±1 % TC Temperature coefficient After calibration 30 50 ppm/ °C SPI interface timing FSCLKr Data read speed 32 MHz FSCLKw Data write speed 100 kHz tDS Data setup time 20 ns tDH Data hold time 0 ns tON Data driver on time 20 ns tOFF Data driver off time 20 ns tSYN SYN active width 2/fCLK s Table 7. Electrical characteristics (continued) Symbol Parameter Test conditions Min. Typ. Max. Unit |
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