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AS3935 データシート(PDF) 4 Page - ams AG |
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AS3935 データシート(HTML) 4 Page - ams AG |
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4 / 28 page  www.austriamicrosystems.com Revision 1.2 3 - 27 AS3935 Datasheet - Pin Assignm ents 4 Pin Assignments Figure 2. Pin Assignments (Top View) 4.1 Pin Descriptions Table 1. Pin Descriptions Pin Number Pin Name Pin Type Description 1ACG Analog I/O AC-Ground 2 INN Antenna ground 3 INP Antenna positive input 4GND Supply pad Ground 5 VDD Positive supply voltage 6 VREG Positive supply voltage / Regulated voltage 7 EN_VREG Digital input Voltage Regulator Enable 8 CS Chip Select (active low) 9 SI Select Interface (GND → SPI or VDD → I²C) 10 IRQ Digital output Interrupt 11 I2CL/SCL Digital input I²C clock bus or SPI clock bus (according to SI setting) 12 MISO Digital output SPI data output bus 13 I2CD/MOSI Digital I/O with pull-up / Digital input I²C data bus or SPI data input bus (according to SI setting) 14 NC Not connected 15 ADD0 Digital input I²C address selection LSB 16 ADD1 I²C address selection MSB Exposed pad Supply pad Connect to Ground via the GND plan and pin 4 16 1 2 3 4 12 11 10 9 15 14 13 5 6 7 8 AS3935 ACG INN INP GND SI IRQ I2CL / SCL MISO Exposed pad |
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