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EM260-RTR 数据表(PDF) 6 Page - Silicon image |
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EM260-RTR 数据表(HTML) 6 Page - Silicon image |
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6 / 50 page EM260 120-0260-000M Rev 1.1 Page 6 Pin # Signal Directio n Description 24 VDD_PADS Power Pads supply (2.1 – 3.6V) 25 N.C. I When using the SPI interface, this signal is left not connected. TXD O UART Transmitted Data (from EM260 to Host) 26 nHOST_INT O SPI Host Interrupt signal (from EM260 to Host) RXD I UART Received Data (from Host to EM260) 27 SIF_CLK I Programming and Debug Interface, Clock (internal pull down) 28 SIF_MISO O Programming and Debug Interface, Master In / Slave Out 29 SIF_MOSI I Programming and Debug Interface, Master Out / Slave In (external pull-down required to guarantee state in Deep Sleep Mode) 30 nSIF_LOAD I/O Programming and Debug Interface, load strobe (open collector with internal pull up) 31 GND Power Ground Supply 32 VDD_FLASH Power 1.8V Flash memory supply; should be connected to VREG_OUT 33 SDBG O Spare Debug signal 34 LINK_ACTIVITY O Link and Activity signal 35 nWAKE I SPI Wake Interrupt signal (from Host to EM260) N.C. I When using the UART interface, this signal is left not connected. 36 VDD_CORE Power 1.8V digital core supply; should be connected to VREG_OUT 37 VDD_SYNTH_PRE Power 1.8V synthesizer and prescalar supply; should be connected to VREG_OUT 38 OSCB I/O 24MHz crystal oscillator or left open for when using an external clock input on OSCA 39 OSCA I/O 24MHz crystal oscillator or external clock input 40 VDD_24MHZ Power 1.8V high-frequency oscillator supply; should be connected to VREG_OUT 41 GND Ground Ground supply pad in the bottom center of the package forms Pin 41 (see the EM260 Reference Design for PCB considerations) |
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