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HT46R002 датащи(PDF) 28 Page - Holtek Semiconductor Inc

номер детали HT46R002
подробное описание детали  Cost-Effective A/D 8-Bit OTP MCU
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46R002 датащи(HTML) 28 Page - Holtek Semiconductor Inc

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Rev. 1.21
28
April 11, 2017
Rev. 1.21
29
April 11, 2017
HT46R002/HT46R003
Cost-Effective A/D 8-Bit OTP MCU
HT46R002/HT46R003
Cost-Effective A/D 8-Bit OTP MCU
Forapplicationsthatoperatewithinanenvironmentwheremorenoiseispresenttheresetcircuit
shownisrecommended.
RE S/ PA 7
0. 1~ 1 m F
10k W ~
100k W
VD D
VS S
0. 01 m F* *
V DD
1N 4148*
300 W *
Note:“*”ItisrecommendedthatthiscomponentisaddedforaddedESDprotection.
“**”Itisrecommendedthatthiscomponentisaddedinenvironmentswherepower
linenoiseissignificant.
External RES Circuit
MoreinformationregardingexternalresetcircuitsislocatedinApplicationNoteHA0075Eonthe
Holtekwebsite.
RES Pin Reset
ThistypeofresetoccurswhenthemicrocontrollerisalreadyrunningandtheRESpinisforcefully
pulledlowbysoftwarecontrolusingtheregisterEXTRESB.Inthiscaseofotherreset,theProgram
Counterwillresettozeroandprogramexecutioninitiatedfromthispoint.
RE S
In te r nal R es et
0. 9 V DD
0. 4 V DD
t RS TD + t SST
Note:TRSTDispower-ondelay,typicaltime=50ms
RES Reset Timing Chart
• EXTRESB Register
Bit
7
6
5
4
3
2
1
0
Name
RESBEN4 RESBEN3 RESBEN2 RESBEN1 RESBEN0
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
Bit7~5
Describedinothersection.
Bit4~0
RESBEN4~RESBEN0:ExternalResetPinselect
00000:I/OPin
10101:ExternalResetPin
Other:MCUreset
Whenthesebitsarechangedbytheenvironmentalnoisetoresetthemicrocontroller,
theresetoperationwillbeactivatedafter2~3LIRCclockcycles.


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