DRA821U4...ALM datasheet(141/252 Pages) TI

전자부품 데이터시트 검색엔진

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DRA821U4...ALM 데이터시트(PDF) 141 Page - Texas Instruments

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OSC1_XO

Device

OSC1_XI

J7VC_LF_OSC_INT_12

PCB Ground

Figure 7-33. 1.8-V LVCMOS-Compatible Clock Input

7.9.4.1.5 Auxiliary OSC1 Not Used

Figure 7-34 shows the recommended oscillator connections when OSC1 is not used. OSC1_XI must be

connected to VSS through an external pull resistor (Rpd) to ensure this input is held to a valid low level when

unused since the internal pull-down resistor is disabled by default.

Device

OSC1_XO

OSC1_XI

J7ES_AUX_OSC_NOT_USED_11

Rpd

PCB Ground

Figure 7-34. OSC1 Not Used

7.9.4.1.6 WKUP_LF_CLKIN Internal Oscillator Clock Source

Figure 7-35 shows the recommended oscillator connections when WKUP_LF_CLKIN is connected to an

LVCMOS square-wave digital clock source.

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DRA821U-Q1

SPRSP57D – APRIL 2020 – REVISED DECEMBER 2022

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Product Folder Links: DRA821U-Q1

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