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F28384SPTPQR 数据表(PDF) 86 Page - Texas Instruments |
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F28384SPTPQR 数据表(HTML) 86 Page - Texas Instruments |
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86 / 306 page  6.6 Connections for Unused Pins For applications that do not need to use all functions of the device, Table 6-12 lists acceptable conditioning for any unused pins. When multiple options are listed in Table 6-12, any are acceptable. Pins not listed in Table 6-12 must be connected according to the Pin Attributes table. Table 6-12. Connections for Unused Pins SIGNAL NAME ACCEPTABLE PRACTICE Analog VREFHIx Tie to VDDA VREFLOx Tie to VSSA ADCINx (except DAC pins) • No Connect • Tie to VSSA ADCINx (DAC pins) • No Connect • Pulldown to VSSA through 5-kΩ resistor Digital GPIOx • No connection (input mode with internal pullup enabled) • No connection (output mode with internal pullup disabled) • Pullup or pulldown resistor (any value resistor, input mode, and with internal pullup disabled) X1 Tie to VSS X2 No Connect TCK • No Connect • Pullup resistor TDI • No Connect • Pullup resistor TDO No Connect TMS No Connect TRSTn Pulldown resistor (2.2 kΩ or smaller) ERRORSTS No Connect FLT1 No Connect FLT2 No Connect Power and Ground VDD All VDD pins must be connected per the Pin Attributes table. VDDA If a dedicated analog supply is not used, tie to VDDIO. VDDIO All VDDIO pins must be connected per the Pin Attributes table. VDD3VFL Must be tied to VDDIO VDDOSC Must be tied to VDDIO VSS All VSS pins must be connected to board ground. VSSA If a dedicated analog ground is not used, tie to VSS. VSSOSC If an external crystal is not used, this pin may be connected to the board ground. TMS320F28388D, TMS320F28386D, TMS320F28386D-Q1 TMS320F28384D, TMS320F28384D-Q1, TMS320F28388S TMS320F28386S, TMS320F28386S-Q1, TMS320F28384S, TMS320F28384S-Q1 SPRSP14D – MAY 2019 – REVISED FEBRUARY 2021 www.ti.com 86 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: TMS320F28388D TMS320F28386D TMS320F28386D-Q1 TMS320F28384D TMS320F28384D-Q1 TMS320F28388S TMS320F28386S TMS320F28386S-Q1 TMS320F28384S TMS320F28384S-Q1 |
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