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IS1678 датащи(PDF) 8 Page - Microchip Technology |
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IS1678 датащи(HTML) 8 Page - Microchip Technology |
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8 / 54 page ![]() IS1678 DS60001386APage 8 Advance Information 2016 Microchip Technology Inc. 20 VDD_IO Power I/O positive supply input (3.3V) Connect to 1 uF (X5R/X7R) capacitor 21 P3_1 DIO Configurable control or Indication pin (Internally pulled up, if configured as an input) 22 P3_2 DIO Configurable control or Indication pin (Internally pulled up, if configured as an input) 23 P3_3 DIO Configurable control or Indication pin (Internally pulled up, if configured as an input) 24 P3_4 DIO Configurable control or Indication pin (Internally pulled up, if configured as an input) 25 P3_6 DIO Configurable control or Indication pin (Internally pulled up, if configured as an input) 26 P3_7 DIO Configurable control or Indication pin (Internally pulled up, if configured as an input) 27 VDD_XO Power 1.8V input for the external 16 MHz crystal Connect to GND through a 1uF (X5R/X7R) capacitor 28 XO_P AI Positive node for RF 16 MHz crystal input 29 XO_N AI Negative node for RF 16 MHz crystal input 30 LED1 DO LED Driver 31 VCC_RF Power Power input for VCO and RF (1.8V) Connect to GND through a 1 uF (X5R/X7R) capacitor 32 NC NC NC 33 RTX AIO External antenna connection (50 ohm) 34 AVDD_SAR Power 1.8V input for AVDD_SAR power Connect to GND through a 1 uF (X5R/X7R) capacitor 35 NC NC NC 36 BAT_IN Power Battery input. Main positive supply input Connect to GND through a 10 uF (X5R/X7R) capacitor 37 SW_BTN DI Power Button: H: Power on L: Power off 38 LDO33_O Power Internal 3.3V LDO regulator output Connect to GND through a 10 uF (X5R/X7R) capacitor 39 LDO18_IN Power Internal 1.8V LDO regulator input Connect with LDO33_O 40 LDO18_O Power Internal 1.8V LDO regulator output Connect to GND through a 1 uF (X5R/X7R) capacitor 41 EP Power Exposed pad as ground Legend: A = Analog D = Digital I = Input O = Output TABLE 1-1: PIN DESCRIPTION (CONTINUED) Pin Number Pin Name Pin Type Pin Description |
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