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USB2514BT-I/M2 数据表(PDF) 53 Page - Microchip Technology |
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USB2514BT-I/M2 数据表(HTML) 53 Page - Microchip Technology |
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53 / 57 page ![]() 2010 - 2015 Microchip Technology Inc. DS00001692C-page 53 USB251xB/xBi Section 1.1, "Configurable Features," on page 4 Updated bulleted lists. USB signal drive strength, USB differential pair pin location and downstream port power control / over-current detection items moved from first (strap-configurable) bulleted list to the second (EEPROM-configurable) bulleted list. Added enabling of battery charging to the first bulleted list. Section 3.1, "Pin Configurations," on page 7 Clarified introductory sentence. Table 3-2, “USB251xB/xBi Pin Descriptions,” on page 12 Updated VBUS_DET buffer type to “I” and changed description to: “For self-powered applications with a permanently attached host, this pin must be connected to a dedicated host control output, or connected to the 3.3 V domain that powers the host (typically VDD33).” Table 3-2, “USB251xB/xBi Pin Descriptions,” on page 12 Updated CRFILT and PLLFILT pin descriptions. Section 7.1, "Oscillator/Crystal," on page 44 Removed redundant sentence: “External Clock: 50% duty cycle 10%, 24/48 MHz 350 ppm, jitter < 100 ps rms”. This information is provided in Section 7.2, "External Clock," on page 45. Section 7.0, "AC Specifications" Removed ceramic resonator information. Section 7.2, "External Clock" Replaced “1.8 V CMOS Logic” with “1.2 V CMOS Logic”. Updated XTALOUT description. Section 3.3, "Pin Descriptions (Grouped by Function)" Updated CRFILT and PLLFILT pin descriptions. Cover, Package, All Removed the 49-BGA option. Order Code Page Changed ordering codes for non-industrial USB2513B and USB2514B. Last character was changed from “G” to “C”. Front page Removed support for ceramic resonator. Rev. 2.1 (02-22-11) Section 6.2.1, Package Thermal Specifications Added Max Power Supported = (TJ, max.spec. - Tamb)/ ΘJA Rev. 2.0 (10-01-10) All General refresh, corrected grammatical errors and unified tone. TABLE C-1: REVISION HISTORY (CONTINUED) Revision Level & Date Section/Figure/Entry Correction |
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