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AMC7823
SLAS453A–APRIL2005–REVISEDOCTOBER2005
terminalfunctions(持续)
终端
描述
非.名字
12CH1Analoginputchannel1
13CH2Analoginputchannel2
14CH3Analoginputchannel3
15AGNDAnalogground
16avddanalogpowersupply,+3vto+5v.mustbethesamevalueasdvdd.
17CH4Analoginputchannel4
18CH5Analoginputchannel5
19CH6Analoginputchannel6
20CH7Analoginputchannel7
whenexternalreferenceconnectshere,theinternalreferenceisoverridden.wheninternalreference
21ext_ref_inisselected,thispinworksasoutputoftheinternalreference(with10-k
Ω
outputimpedance).看
涉及sectionfordetails.
22dac-4_outoutputofdac-4
23dac-5_outoutputofdac-5
24dac-6_outoutputofdac-6
25dac-7_outoutputofdac-7
26resetresetinput.logiclowonthispincausestheparttoperformhardwarereset.
27gpio-0/alr0multiplefunctioni/opin.worksasdigitali/ooralrpinofthefirstanaloginput.
28gpio-1/alr1multiplefunctioni/opin.worksasdigitali/ooralrpinofthesecondanaloginput.
29gpio-2/alr2multiplefunctioni/opin.worksasdigitali/ooralrpinofthethirdanaloginput.
30gpio-3/alr3multiplefunctioni/opin.worksasdigitali/ooralrpinofthefourthanaloginput.
externalconversiontrigger.therisingedgestartssamplingandconversionoftheadcwhen
31CONVERT
externaltriggermodeisselected.
32SCLKSerialclockinput
33mosimasterout,slavein.digitaldatainputfortheserialinterface
34misomasterin,slaveout.digitaldataoutputfortheserialinterface
slaveselectinput(activelow).dataisnotclockedintomosiunlessssislow.whenssishigh,
35SS
misoisinhigh-impedancestatus.
36bvddinterfacepowersupply.connectsto3vfor3-vlogic;connectsto5vfor5-vlogic.
37dvdddigitalpowersupply(+3vto+5v).mustbethesamevalueasavdd.
38DGNDDigitalground
39gpio4general-purposedigitali/opin
40gpio5general-purposedigitali/opin
9
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