AM3359_14 datasheet(94/236 Pages) TI1

94 / 236 page

AM3359, AM3358, AM3357

AM3356, AM3354, AM3352

SPRS717F – OCTOBER 2011 – REVISED APRIL 2013

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3.4

External Capacitors

To improve module performance, decoupling capacitors are required to suppress the switching noise generated

by high frequency and to stabilize the supply voltage. A decoupling capacitor is most effective when it is close to

the device, because this minimizes the inductance of the circuit board wiring and interconnects.

3.4.1

Voltage Decoupling Capacitors

Table 3-14 summarizes the Core voltage decoupling characteristics.

3.4.1.1

Core Voltage Decoupling Capacitors

To improve module performance, decoupling capacitors are required to suppress high-frequency switching noise

and to stabilize the supply voltage. A decoupling capacitor is most effective when located close to the AM335x

device, because this minimizes the inductance of the circuit board wiring and interconnects.

Table 3-14. Core Voltage Decoupling Characteristics

PARAMETER

TYP

UNIT

CVDD_CORE

(1)

10.08

μF

CVDD_MPU

(2)(3)

10.05

μF

(1) The typical value corresponds to 1 cap of 10

μF and 8 caps of 10 nF.

(2) Not available on the ZCE package. VDD_MPU is merged with VDD_CORE on the ZCE package.

(3) The typical value corresponds to 1 cap of 10

μF and 5 caps of 10 nF.

3.4.1.2

IO and Analog Voltage Decoupling Capacitors

Table 3-15 summarizes the power-supply decoupling capacitor recommendations.

Table 3-15. Power-Supply Decoupling Capacitor Characteristics

PARAMETER

TYP

UNIT

CVDDA_ADC

CVDDA1P8V_USB0

CCVDDA3P3V_USB0

CVDDA1P8V_USB1

(1)

CVDDA3P3V_USB1

(1)

CVDDS

(2)

10.04

μF

CVDDS_DDR

(4)

CVDDS_OSC

CVDDS_PLL_DDR

CVDDS_PLL_CORE_LCD

CVDDS_SRAM_CORE_BG

CVDDS_SRAM_MPU_BB

CVDDS_PLL_MPU

CVDDS_RTC

CVDDSHV1

(5)

10.02

μF

CVDDSHV2

(1)(5)

10.02

μF

CVDDSHV3

(1)(5)

10.02

μF

Device Operating Conditions

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