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STW81100 Datasheet(PDF) 4 Page - STMicroelectronics |
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STW81100 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 29 page STW81100 4/29 Table 2. Pin Description Pin No Name Description Observations 1 VDD_VCO1 VCO power supply 2 VDD_DIV2 Divider by 2 power supply 3 VDD_OUTBUF Output buffer power supply 4 OUTBUFP LO buffer positive output Open collector 5 OUTBUFN LO buffer negative output Open collector 6 VDD_DIV4 Divider by 4 power supply 7 VDD_VCO2 VCO power supply 8 VDD_ESD ESD positive rail power supply 9 VCTRL VCO control voltage 10 ICP PLL charge pump output 11 REXT External resistance connection for PLL charge pump 12 VDD_CP Power supply for charge pump 13 TEST1 Test input 1 Test purpose only; must be connected to GND 14 LOCK_DET Lock detector CMOS Output 15 TEST2 Test input 2 Test purpose only; must be connected to GND 16 REF_IN Reference frequency input 17 VDD_PLL PLL digital power supply 18 EXTVCO_INN External VCO negative input Test purpose only; must be connected to GND 19 EXTVCO_INP External VCO positive input Test purpose only; must be connected to GND 20 VDD_BUFVCO VCO buffer power supply 21 ATPGON SCAN mode activated Test purpose only; must be connected to GND 22 VDD_I2CI2C bus power supply 23 EXT_PD Power down hardware CMOS Input 24 SDA I2CBUS data line CMOS Bidir Schmitt triggered 25 SCL I2CBUS clock line CMOS Input 26 ADD0 I2CBUS address select pin CMOS Input 27 ADD1 I2CBUS address select pin CMOS Input 28 ADD2 I2CBUS address select pin CMOS Input |
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