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FT221XS-R Datasheet(PDF) 4 Page - Future Technology Devices International Ltd. |
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FT221XS-R Datasheet(HTML) 4 Page - Future Technology Devices International Ltd. |
4 / 45 page Copyright © 2013 Future Technology Devices International Limited 4 FT221X USB 8-BIT SPI/FT1248 IC Datasheet Version 1.3 Document No.: FT_000630 Clearance No.: FTDI# 263 2 FT221X Block Diagram 3.3 Volt LDO Regulator 1.8 Volt LDO Regulator USB Transceiver with Integrated 1.5k pullups and battery charge detection USB DPLL Internal 12MHz Oscillator X4 Clock Multiplier Serial Interface Engine (SIE) USB Protocol Engine FT1248 Controller Reset Generator FIFO TX Buffer (512 bytes) FIFO RX Buffer (512 bytes) Internal MTP Memory 48MHz GND RESET# To USB Transceiver Cell 3V3OUT VCCIO 3V3OUT VCC USBDP USBDM 1V8 Internal Core Supply MIOSI[0] MIOSI[1] MIOSI[2] MIOSI[3] MIOSI[4] MIOSI[5] MIOSI[6] MISOI[7] CLK CS# MISO CBUS3 Figure 2.1 FT221X Block Diagram For a description of each function please refer to Section 4. |
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