ADC 6021 Specifiche Scaricare il pdf (Pagina 73)

MYXPM6021*

Revision 1.1 - 10/21/14

*Advanced information. Subject to change without notice.

MYXPM6021*

Form #: CSI-D-685 Document 011

lastknownBATIDlinevoltagevalueinordertoensurethatnofalsebatteryremovaleventsarereported.

12.2.4 BSI Sensing

MYXPM6021 is able to detect the presence of the R

BSI

 resistor as shown. The R

BSI

 is a 1% resistor and can range

anywherefrom0to130kΩ.MYXPM6021isabletodifferentiatebetweendifferentIDresistances(assumingstandard1%

valuesovertheaforementionedrange).

12.2.5 Digital Battery Communications

MYXPM6021includeslevelshiftinghardwarethatwilltakethesingleBATIDlineandconvertittotwounidirectional1.8V

I/Osignals,BATIDINandBATIDOUT.TheSOCwillcommunicatewiththebatterydigitalinterfaceviaMYXPM6021which

istransparentandshiftsthesignalsfromthebatteryvoltagedomaintothe1.8VSOCdomain.GPIO0P1andGPIO0P2

pinsareusedforthisfunction.

Software,basedonthevalueoftheBSIresistancediscovered,maychoosetoenabledigitalbatterycommunication.

Wheneverdigitalcommunicationisenabled(DBIENbitintheBATDETCTRLregister),MYXPM6021disablestheanalog

BATIDpresencesensinglogic,andwillnotfalselyreportremovalevents.

Table 45: Digital Battery Interface Specication

Parameter Min Nom Max Units Notes

Voltage (VDD) 1.71 1.8 1.89 V At pin

Vil 0.3*VDD V

Vih 0.7*VDD V

Vhys 0.1 V

Vol 0.2*VDD V

Voh VDD-0.45 V

Trise 20 300 ns

Tfall 20 300 ns

Tr/Tf 30 70 % Measurement points

12.2.6 System Voltage Monitor

TheSystemVoltageMonitorisusedtoindicatewhenthevoltagelevelontheVSYSpinhassettledabove3.0V.Thisis

implementedusing a simplecomparatorand xed thresholds.The voltagelevel on VSYS muststay above 3.0v fora

minimumof100ms(i.e.debouncetime)beforetheoutputwillbecomeactive.

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ADC 6021 Specifiche Pagina 73