Silicon Laboratories C8051T620/2-DK Manual de usuario descargar pdf (Pagina 12)

Supply Voltage Considerations (1 of 2)

 Process technology change and second voltage regulator added

 V

output now 3.45 V instead of 3.3 V

 Second regulator provides 1.8 V

• Additional registers to support the regulator functionality (REG01CN)

• Can be placed in a low power mode

 V

pin added on some devices in case the port input/output voltages are

required to be different from the V

that the device is operating

 V

monitor threshold voltage changes

 Porting considerations

• None for firmware, but care must be observed for electrical connections

Feature C8051F34A C8051T63x/32x

Supply voltage range 2.7–3.6 V 1.8–3.6 V

3.3 V regulator for V

Yes No

3.45 V regulator for V

No Yes

1.8 V regulator for internal core voltage No Yes

Maximum voltage on any I/O pin 5.8 V *V

+ 3.6 V (5.8V max)

*If supply voltage reduced to 0 V then voltage at the pin must be less than 3.6 V

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Silicon Laboratories C8051T620/2-DK Manual de usuario Pagina 12