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FT232RQ датащи(PDF) 21 Page - List of Unclassifed Manufacturers |
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FT232RQ датащи(HTML) 21 Page - List of Unclassifed Manufacturers |
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21 / 43 page ![]() Copyright © 2010 Future Technology Devices International Limited 21 Document No.: FT_000053 FT232R USB UART IC Datasheet Version 2.10 Clearance No.: FTDI# 38 Parameter Description Minimum Typical Maximum Units Conditions UVoh I/O Pins Static Output (High) 2.8 3.6 V RI = 1.5kΩ to 3V3OUT (D+) RI = 15KΩ to GND (D-) UVol I/O Pins Static Output (Low) 0 0.3 V RI = 1.5kΩ to 3V3OUT (D+) RI = 15kΩ to GND (D-) UVse Single Ended Rx Threshold 0.8 2.0 V UCom Differential Common Mode 0.8 2.5 V UVDif Differential Input Sensitivity 0.2 V UDrvZ Driver Output Impedance 26 29 44 Ohms See Note 1 Table 5.12 USB I/O Pin (USBDP, USBDM) Characteristics 5.3 EEPROM Reliability Characteristics The internal 1024 Bit EEPROM has the following reliability characteristics: Parameter Value Unit Data Retention 10 Years Read / Write Cycle 10,000 Cycles Table 5.13 EEPROM Characteristics 5.4 Internal Clock Characteristics The internal Clock Oscillator has the following characteristics: Parameter Value Unit Minimum Typical Maximum Frequency of Operation (see Note 1) 11.98 12.00 12.02 MHz Clock Period 83.19 83.33 83.47 ns Duty Cycle 45 50 55 % Table 5.14 Internal Clock Characteristics Note 1: Equivalent to +/-1667ppm |
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