Texas Instruments AM335x Sitara User Manual

AM3359, AM3358, AM3357, AM3356, AM3354, AM3352
SPRS717H –OCTOBER 2011–REVISED MAY 2015 www.ti.com
5.9 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.
5.9.1 Voltage Decoupling Capacitors
Table 5-13 summarizes the Core voltage decoupling characteristics.
5.9.1.1 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 5-13. Core Voltage Decoupling Characteristics
PARAMETER TYP UNIT
C
VDD_CORE
(1)
10.08 μF
C
VDD_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.
5.9.1.2 IO and Analog Voltage Decoupling Capacitors
Table 5-14 summarizes the power-supply decoupling capacitor recommendations.
Table 5-14. Power-Supply Decoupling Capacitor Characteristics
PARAMETER TYP UNIT
C
VDDA_ADC
10 nF
C
VDDA1P8V_USB0
10 nF
C
CVDDA3P3V_USB0
10 nF
C
VDDA1P8V_USB1
(1)
10 nF
C
VDDA3P3V_USB1
(1)
10 nF
C
VDDS
(2)
10.04 μF
C
VDDS_DDR
(3)
C
VDDS_OSC
10 nF
C
VDDS_PLL_DDR
10 nF
C
VDDS_PLL_CORE_LCD
10 nF
C
VDDS_SRAM_CORE_BG
(4)
10.01 μF
C
VDDS_SRAM_MPU_BB
(5)
10.01 μF
C
VDDS_PLL_MPU
10 nF
C
VDDS_RTC
10 nF
C
VDDSHV1
(6)
10.02 μF
C
VDDSHV2
(1)(6)
10.02 μF
C
VDDSHV3
(1)(6)
10.02 μF
C
VDDSHV4
(6)
10.02 μF
C
VDDSHV5
(6)
10.02 μF
C
VDDSHV6
(7)
10.06 μF
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Texas Instruments AM335x Sitara Specifications

General

Brand	Texas Instruments
Model	AM335x Sitara
Category	Processor
Language	English