5.12.1.2 IO and Analog Voltage Decoupling Capacitors
Table 5-10 summarizes the power-supply decoupling capacitor recommendations.
Table 5-10 Power-Supply Decoupling Capacitor Characteristics
PARAMETER |
TYP |
UNIT |
CVDDA_ADC0
|
10 |
nF |
CVDDA_ADC1
|
10 |
nF |
CVDDA1P8V_USB0(1)
|
2.21 |
µF |
CCVDDA3P3V_USB0
|
10 |
nF |
CVDDA1P8V_USB1
|
10 |
nF |
CVDDA3P3V_USB1
|
10 |
nF |
CVDDS(2)
|
10.04 |
μF |
CVDDS_DDR
|
(3)
|
|
CVDDS_OSC
|
10 |
nF |
CVDDS_PLL_DDR
|
10 |
nF |
CVDDS_PLL_CORE_LCD
|
10 |
nF |
CVDDS_SRAM_CORE_BG(4)
|
10.01 |
µF |
CVDDS_SRAM_MPU_BB(5)
|
10.01 |
µF |
CVDDS_PLL_MPU
|
10 |
nF |
CVDDS_RTC
|
10 |
nF |
CVDDS_CLKOUT
|
10 |
nF |
CVDDS3P3V_IOLDO
|
10 |
nF |
CVDDSHV1(6)
|
10.02 |
μF |
CVDDSHV2(7)
|
10.06 |
μF |
CVDDSHV3(7)
|
10.06 |
μF |
CVDDSHV5(6)
|
10.02 |
μF |
CVDDSHV6(7)
|
10.06 |
μF |
CVDDSHV7(6)
|
10.02 |
μF |
CVDDSHV8(6)
|
10.02 |
μF |
CVDDSHV9(6)
|
10.02 |
μF |
CVDDSHV10(6)
|
10.02 |
μF |
CVDDSHV11(6)
|
10.02 |
μF |
- Typical values consist of 1 capacitor of 10 μF and 4 capacitors of 10 nF.
- Typical values consist of 1 capacitor of 2.2 μF and 1 capacitor of 10 nF.
- For more details on decoupling capacitor requirements for the DDR3 and DDR3L memory interface, see Section 5.13.8.2.1.3.6 and Section 5.13.8.2.1.3.7 when using DDR3 and DDR3L memory devices.
- VDDS_SRAM_CORE_BG supply powers an internal LDO for SRAM supplies. Inrush currents could cause voltage drop on the VDDS_SRAM_CORE_BG supplies when the SRAM LDO is enabled after powering up VDDS_SRAM_CORE_BG terminals. TI recommends placing a 10-μF capacitor close to the terminal and routing it with the widest traces possible to minimize the voltage drop on VDDS_SRAM_CORE_BG terminals.
- VDDS_SRAM_MPU_BB supply powers an internal LDO for SRAM supplies. Inrush currents could cause voltage drop on the VDDS_SRAM_MPU_BB supplies when the SRAM LDO is enabled after powering up VDDS_SRAM_MPU_BB terminals. TI recommends placing a 10-μF capacitor close to the terminal and routing it with the widest traces possible to minimize the voltage drop on VDDS_SRAM_MPU_BB terminals.
- Typical values consist of 1 capacitor of 10 μF and 2 capacitors of 10 nF.
- Typical values consist of 1 capacitor of 10 μF and 6 capacitors of 10 nF.