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FT900 Datasheet(PDF) 21 Page - Future Technology Devices International Ltd. |
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FT900 Datasheet(HTML) 21 Page - Future Technology Devices International Ltd. |
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21 / 58 page ![]() Copyright © 2014 Future Technology Devices International Limited 21 FT900/1/2/3 Embedded Microcontroller Datasheet Version 1.0 Document No.: FT_000965 Clearance No.: FTDI#421 Pin No. Name Type Description 63 VOUT1 P +1.2V Regulator power output. This is internal regulator output. Connect 4.7uF and 0.1uF decoupling capacitors to GND. This pin must be connected to pin 67. 64 VCCIO3V3 P +3.3V supply voltage. This is the supply voltage for all the I/O ports. Connect a 0.1uF decoupling capacitor. This pin must be connected to pin 46. 65 XI/CLKIN AI 12MHz clock frequency input to the Oscillator circuit or to internal clock generator circuit. 66 XIO AO Output from the Oscillator amplifier. 67 VCC1V2 P +1.2V Regulator power supply for USB. Provide +1.2V power to this pin. This pin must be connected to pin 63. Connect 0.1uF decoupling capacitor. 68 VUSB3V3 P +3.3V supply voltage. This is the supply voltage for USB peripheral and host I/O ports. Connect 10uF and 0.1uF decoupling capacitors. This pin could be connected to all +3.3V power supply pins without 10uF capacitor. 69 D_DM AI/O USB peripheral bidirectional DM line. 70 D_DP AI/O USB peripheral bidirectional DP line. 71 DRREF AI USB peripheral reference voltage input. Connect 12Kohm +/- 1% resistor to GND. 72 H_DM AI/O USB host bidirectional DM line. 73 H_DP AI/O USB host bidirectional DP line. 74 AGND P Analog Ground 75 HRREF AI USB host reference voltage input. Connect 12Kohm +/- 1% resistor to GND. 76 VETH3V3 P +3.3V supply voltage. This is the supply voltage for Ethernet I/O ports. Connect 10uF and 0.1uF decoupling capacitors. This pin could be connected to all +3.3V power supply pins without 10uF capacitor. 77 VOUT2 P +1.2V Regulator power supply.[2] This is an internal regulator output. Connect 0.1uF decoupling capacitors. 78 RREFSET AI Ethernet reference voltage input.[2] |
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