C8051F344 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

MFG CO.

C8051F344

Full Speed USB Flash MCU Family

Silicon Laboratories 

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D

From VBUS

VBUS

REGIN

VBUS Sense

5 V In

Voltage Regulator (REG0)

From 3 V

Power Net

VDD

3 V Out

Device

Power Net

Figure 8.3. REG0 Configuration: USB Self-Powered, Regulator Disabled

From 5 V

Power Net

To 3 V

Power Net

VBUS

REGIN

VDD

VBUS Sense

5 V In

Voltage Regulator (REG0)

3 V Out

Device

Power Net

Figure 8.4. REG0 Configuration: No USB Connection

Rev. 1.3

71

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