www.德州仪器.com
TPS65020
SLVS607–SEPTEMBER2005
terminalfunctions(持续)
终端
i/odescription
nameno.
inputsignalindicatingdefaultvdcdc1voltage,0=3v,1=3.3vthispincanalsobeconnectedto
defdcdc110iaresistordividerbetweenvdcdc1andgnd.iftheoutputvoltageofthedcdc1converterissetin
arangefrom0.6vtovindcdc1v
inputsignalindicatingdefaultvdcdc2voltage,0=1.8v,1=2.5vthispincanalsobeconnected
defdcdc232itoaresistordividerbetweenvdcdc2andgnd.iftheoutputvoltageofthedcdc2converterisset
inarangefrom0.6vtovindcdc2v
inputsignalindicatingdefaultvdcdc3voltage,0=1.3v,1=1.55vthispincanalsobeconnected
defdcdc31itoaresistordividerbetweenvdcdc3andgnd.iftheoutputvoltageofthedcdc3converterisset
inarangefrom0.6vtovindcdc3v
dcdc1_en25ivdcdc1enablepin.alogichighenablestheregulator,alogiclowdisablestheregulator.
dcdc2_en24ivdcdc2enablepin.alogichighenablestheregulator,alogiclowdisablestheregulator.
dcdc3_en23ivdcdc3enablepin.alogichighenablestheregulator,alogiclowdisablestheregulator.
LDOREGULATORSECTION
VINLDO19IIInputvoltageforLDO1andLDO2
VLDO120OOutputvoltageofLDO1
VLDO218OOutputvoltageofLDO2
ldo_en22ienableinputforldo1andldo2.logichighenablestheldos,logiclowdisablestheldos
vbackup15iconnectthebackupbatterytothisinputpin.
vrtc16ooutputvoltageoftheldo/switchfortherealtimeclock
VSYSIN14IInputofsystemvoltageforVRTCswitch
CONTROLANDI
2
CSECTION
hot_reset11ipushbuttoninputusedtorebootorwake-upprocessorviarespwronoutputpin
trespwron26iconnectthetimingcapacitortothispintosettheresetdelaytime:1nf
→
100ms
RESPWRON27OOpendrainSystemresetoutput
pwrfail31oopendrainoutput.activelowwhenpwrfailcomparatorindicateslowvbatcondition.
低_bat21oopendrainoutputoflow_batcomparator
INT28OOpendrainoutput
SCLK30ISerialinterfaceclockline
sdat29i/oserialinterfacedata/地址
pwrfail_sns38iinputforthecomparatordrivingthepwrfailoutput
lowbat_sns39iinputforthecomparatordrivingthelow_batoutput
铅_in12i/opushbuttoninputdebouncedandoutputfedtolatchatpb_输出
铅_out13i/oopendrainoutputoflatchdrivenbypb_在.lowafterpowerup.
11
: 点此下载
