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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ST25R3920 데이터시트(PDF) 20 Page - STMicroelectronics |
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ST25R3920 데이터시트(HTML) 20 Page - STMicroelectronics |
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20 / 152 page  Pin and signal description ST25R3920 20/152 DS13261 Rev 9 18 AAT_A AO AAT tune voltage for variable capacitor AAT_A 19 AAT_B AO AAT tune voltage for variable capacitor AAT_B 20 I2C_EN DI I2C interface enable (VDD_D level) 21 VSS P Ground, die substrate potential 22 RFI1 AI Receiver input 23 RFI2 AI Receiver input 24 AGDC AIO Analog reference voltage 25 CSI AIO Capacitor sensor input / Test output 1 26 GND_A P Analog ground 27 IRQ DO Interrupt request output 28 MCU_CLK DO Clock output for MCU 29 BSS DI SPI enable (active low) 30 SCLK DI SPI clock / I2C clock 31 MOSI DI SPI data input 32 MISO DO_T Serial peripheral interface data output / I2C data line 33 NA P Thermal pad 1. P: Power supply pin AIO: analog I/O, AI: analog input, AO: analog output DI: digital input, DIPD: digital input with pull-down, DO: digital output, DO_T: digital output/tri-state, DIO: digital bidirectional. Table 1. ST25R3920 - VFQFPN32 pin assignment (continued) VFQFPN32 Name Type(1) Description |
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