CY8CKIT-059 datasheet(28/140 Pages) INFINEON

28 / 140 page

Document Number: 001-84932 Rev. *N

Page 27 of 139

PSoC® 5LP: CY8C58LP Family

Datasheet

Figure 6-4. PSoC Power System

Notes



The two VCCD pins must be connected together with as short a trace as possible. A trace under the device is recommended, as

shown in Figure 2-6.



You can power the device in internally regulated mode, where the voltage applied to the VDDx pins is as high as 5.5 V, and the

internal regulators provide the core voltages. In this mode, do not apply power to the VCCx pins, and do not tie the VDDx pins

to the VCCx pins.



You can also power the device in externally regulated mode, that is, by directly powering the VCCD and VCCA pins. In this configuration,

the VDDD pins should be shorted to the VCCD pins and the VDDA pin should be shorted to the VCCA pin. The allowed supply range

in this configuration is 1.71 V to 1.89 V. After power up in this configuration, the internal regulators are on by default, and should be

disabled to reduce power consumption.



It is good practice to check the datasheets for your bypass capacitors, specifically the working voltage and the DC bias specifications.

With some capacitors, the actual capacitance can decrease considerably when the DC bias (VDDX or VCCX in Figure 6-4) is a

significant percentage of the rated working voltage.

VSSB

VDDIO0

VSSA

VCCA

VDDA

Digital

Regulators

Analog

Regulator

Analog

Domain

Digital

Domain

I2C

Regulator

Sleep

Regulator

Hibernate

Regulator

I/O Supply

VDDIO2

VDDIO0

VDDIO3

VDDIO1

0.1 µF

VDDD

1 µF

VDDA

0.1 µF

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