ADC 6021 Dokumentacja Pobierz pdf (Strona 72)

MYXPM6021*

Revision 1.1 - 10/21/14

*Advanced information. Subject to change without notice.

MYXPM6021*

Form #: CSI-D-685 Document 011

Figure 32: Battery Single Wire Block Diagram for Analog Sensing, Digital Communication

Table 44: BATID Electrical Specication

Parameter Min Nom Max Units Notes

Frequency 3.268 250 kHz Digital communication

Voltage 1.71 1.8 1.89 V

Vil 0.35 V

Vih 0.9 V

Vhys 0.05 V

Vol 0.01 V 1mA source current

Cload 380 pF

Trise 500 ns 0V to Vih(min)

Tfall 500 ns Vpu to Vil(max)

12.2.3 Battery Presence Detection

NormallytheBSIresistorwillpullthevoltageontheBATIDlinetoalevelthatislowerthanasettrippoint.Ifthebatteryis

removed,theBATIDnodewillbepulledhighbytheR

MBI

platformresistorwhichistypicallyintherangeof30KΩto200KΩ.

Whenthisoccurs,MYXPM6021detectsthatthebatteryisbeingremoved(ifcongured).

Theintegrated100msde-bouncelogicensurestherearenofalseremovalalerts.DependingontheMYXPM6021setting

eitheracompleteColdOffsequencewillbeperformedoraninterrupttotheSOCwillbesent.

IftheDBIENbitbeset,allowingdigitalbatterycommunicationmodetobeenteredontheBATIDpin,thebatterypresence

logicisswitchedofftoavoidbatteryremovaldetection.PriortoDigitalBatteryCommunication,MYXPM6021retainsthe

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ADC 6021 Dokumentacja Strona 72