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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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DM505LRBABF bảng dữ liệu(PDF) 75 Page - Texas Instruments |
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DM505LRBABF bảng dữ liệu(HTML) 75 Page - Texas Instruments |
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75 / 295 page  75 DM505 www.ti.com SPRS976E – NOVEMBER 2016 – REVISED MAY 2018 Submit Documentation Feedback Terminal Configuration and Functions Copyright © 2016–2018, Texas Instruments Incorporated 4.5 Connections for Unused Pins This section describes the connection requirements of the unused and reserved balls. NOTE The following balls are reserved: A2 / F6 / A21 / B1 These balls must be left unconnected. NOTE All unused power supply balls must be supplied with the voltages specified in the Section 5.4, Recommended Operating Conditions, unless alternative tie-off options are included in Section 4.3, Signal Descriptions. Table 4-29. Unused Balls Specific Connection Requirements Balls Connection Requirements B21 / E22 / J5 / AA10 / AA5 / AA20 / W1 / T21 These balls must be connected to GND through an external pull resistor if unused J2 / G5 / G4 / L3 / L4 / AB10 / J3 / AB5 / Y20 / W2 / T22 / L6 / L5 These balls must be connected to the corresponding power supply through an external pull resistor if unused M19 / M20 / M21 / M22 / N22 / N21 / P19 / P18 / P20 These balls must be connected together to GND through a single external 10k-ohm resistor if unused. NOTE All other unused signal balls with a Pad Configuration Register can be left unconnected with their internal pullup or pulldown resistor enabled. NOTE All other unused signal balls without Pad Configuration Register can be left unconnected. |
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