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NCN5121MNTWG Datasheet(PDF) 3 Page - ON Semiconductor |
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NCN5121MNTWG Datasheet(HTML) 3 Page - ON Semiconductor |
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3 / 57 page  NCN5121 www.onsemi.com 3 PIN DESCRIPTION Table 1. PIN LIST AND DESCRIPTION Name Pin Description Type Equivalent Schematic VSSA 1 Analog Supply Voltage Ground Supply VBUS2 2 Ground for KNX Transmitter Supply TX0 3 KNX Transmitter Output Analog Output Type 1 CCP 4 AC coupling external capacitor connection Analog I/O Type 2 CAV 5 Capacitor connection to average bus DC voltage Analog I/O Type 3 VBUS1 6 KNX power supply input Supply Type 5 CEQ1 7 Capacitor connection 1 for defining equalization pulse Analog I/O Type 4 CEQ2 8 Capacitor connection 2 for defining equalization pulse Analog I/O Type 4 VFILT 9 Filtered bus voltage Supply Type 5 V20V 10 20V supply output Supply Type 5 VDD2MV 11 Voltage monitor of Voltage Regulator 2 Analog Input Type 8 VDD2MC 12 Current monitor input 1 of Voltage Regulator 2 Analog Input Type 9 VDD2 13 Current monitor input 2 of Voltage Regulator 2 Analog Input Type 8 VSS2 14 Voltage Regulator 2 Ground Supply VSW2 15 Switch output of Voltage Regulator 2 Analog Output Type 6 VIN 16 Voltage Regulator 1 and 2 Power Supply Input Supply Type 5 VSW1 17 Switch output of Voltage Regulator 1 Analog Output Type 6 VSS1 18 Voltage Regulator 1 Ground Supply VDD1 19 Current Input 2 and Voltage Monitor Input of Voltage Regulator 1 Analog Input Type 8 VDD1M 20 Current Monitor Input 1 of Voltage Monitor 1 Analog Input Type 9 XCLKC 21 Clock Frequency Configure Digital Input Type 12 TRIG 22 Transmission Trigger Output Digital Output Type 13 MODE1 23 Mode Selection Input 1 Digital Input Type 12 MODE2 24 Mode Selection Input 2 Digital Input Type 12 TREQ 25 Transmit Request Input Digital Input Type 12 CSB/UC1 26 Chip Select Output (SPI) or Configuration Input (UART) or 20 V LDO Disable (Analog Mode) Digital Output or Digital Input Type 13 or 14 SDI/RXD 27 Serial Data Input (SPI) or Receive Input (UART) Digital Input Type 14 SDO/TXD 28 Serial Data Output (SPI) or Transmit Output (UART) Digital Output Type 13 SCK/UC2 29 Serial Clock Output (SPI) or Configuration Input (UART) or Voltage Regulator 2 Disable (Analog Mode) Digital Output or Digital Input Type 13 or 14 VDDD 30 Digital Supply Voltage Input Supply Type 7 VSSD 31 Digital Supply Voltage Ground Supply XCLK 32 Oscillator Clock Output Digital Output Type 13 XSEL 33 Clock Selection (Quartz or Digital Clock) Digital Input Type 12 XTAL2 34 Clock Generator Output (Quartz) or Input (Digital Clock) Analog Output or Digital Input Type 10 or 14 XTAL1 35 Clock Generator Input (Quartz) Analog Input Type 10 SAVEB 36 Save Signal (open drain with pull−up) Digital Output Type 15 RESETB 37 Reset Signal (open drain with pull−up) Digital Output Type 15 FANIN 38 Fan−In Input Digital Input Type 11 ANAOUT 39 Analog Signal Output Analog Output Type 16 VDDA 40 Analog Supply Voltage Input Supply Type 7 NOTE: Type of CSB/UC1 and SCK/UC2 is depending on status MODE1 − MODE2 pin Type of XTAL1 and XTAL2 pin is depending on status XSEL pin. |
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