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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AM1806EZCE4 Fiches technique(PDF) 54 Page - Texas Instruments |
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AM1806EZCE4 Fiches technique(HTML) 54 Page - Texas Instruments |
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54 / 245 page  AM1806 SPRS658F – FEBRUARY 2010 – REVISED MARCH 2014 www.ti.com 3.8 Unused Pin Configurations All signals multiplexed with multiple functions may be used as an alternate function if a given peripheral is not used. Unused non-multiplexed signals and some other specific signals should be handled as specified in the tables below. If NMI is unused, it should be pulled-high externally through a 10k-ohm resistor to supply DVDD3318_B. Table 3-28. Unused USB0 Signal Configurations SIGNAL NAME Configuration USB0_DM No Connect USB0_DP No Connect USB0_ID No Connect USB0_VBUS No Connect USB0_DRVVBUS No Connect USB0_VDDA33 No Connect USB0_VDDA18 No Connect USB0_VDDA12 Internal USB PHY output connected to an external 0.22- μF filter capacitor USB_REFCLKIN No Connect or other peripheral function USB_CVDD 1.2V Table 3-29. Unused RTC Signal Configuration SIGNAL NAME Configuration RTC_XI May be held high (CVDD) or low RTC_XO No Connect RTC_ALARM May be used as GPIO or other peripheral function RTC_CVDD Connect to CVDD RTC_VSS VSS Table 3-30. Unused DDR2/mDDR Controller Signal Configuration SIGNAL NAME Configuration (1) DDR_D[15:0] No Connect DDR_A[13:0] No Connect DDR_CLKP No Connect DDR_CLKN No Connect DDR_CKE No Connect DDR_WE No Connect DDR_RAS No Connect DDR_CAS No Connect DDS_CS No Connect DDR_DQM[1:0] No Connect DDR_DQS[1:0] No Connect DDR_BA[2:0] No Connect DDR_DQGATE0 No Connect DDR_DQGATE1 No Connect DDR_ZP No Connect DDR_VREF No Connect DDR_DVDD18 No Connect (1) The DDR2/mDDR input buffers are enabled by default on device power up and a maximum current draw of 25mA can result on the 1.8V supply. To minimize power consumption, the DDR2/mDDR controller input receivers should be placed in power-down mode by setting VTPIO[14] = 1. 54 Device Overview Copyright © 2010–2014, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: AM1806 |
Numéro de pièce similaire - AM1806EZCE4 |
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Description similaire - AM1806EZCE4 |
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