AS3701 datasheet(46/110 Pages) AMSOSRAM

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AS3701 Arkusz danych(PDF) 46 Page - ams-OSRAM AG

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ams Datasheet

Page 45

[v1-11] 2016-Dec-14

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AS3701 − Detailed Description – System Functions

Internal References

Description

The internal 2.0V reference and the oscillator are powered

either via the VUSB input pin or via the VBAT input pin,

depending on which level is higher. The internal oscillator is

used for PWM, SD frequency and all timings, which are needed

for the charger, the startup sequence and reset delays.

Parameter

Figure 53:

Reference Parameter

Reference Parameter: Shows the key electrical parameter of the on-chip oscillator

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fCLK

Accuracy of internal reference clock

Adjustable by serial

interface register clk_int

-12

fCLK

+12

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