数据搜索系统,热门电子元器件搜索 |
|
HT48R068B 数据表(PDF) 42 Page - Holtek Semiconductor Inc |
|
HT48R068B 数据表(HTML) 42 Page - Holtek Semiconductor Inc |
42 / 118 page Rev. 1.30 4� �e���a�� 0�� �01� Rev. 1.30 43 �e���a�� 0�� �01� HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU RES Pin Reset ThistypeofresetoccurswhenthemicrocontrollerisalreadyrunningandtheRESpinisforcefully pulledlowbyexternalhardwaresuchasanexternalswitch.Inthiscaseasinthecaseofotherreset, theProgramCounterwillresettozeroandprogramexecutioninitiatedfromthispoint. RE S In te r nal R es et 0. 9 V DD 0. 4 V DD t RS TD + t SST RES Reset Timing Chart Note:tRSTDispower-ondelay,typicaltime=100ms Low Voltage Reset — LVR Themicrocontrollercontainsalowvoltageresetcircuitinordertomonitorthesupplyvoltageofthe device.TheLVRfunctionisselectedviaaconfigurationoption.Ifthesupplyvoltageofthedevice dropstowithinarangeof0.9V~VLVRsuchasmightoccurwhenchangingthebattery,theLVRwill automaticallyresetthedeviceinternally.ForavalidLVRsignal,alowsupplyvoltage,i.e.,avoltage intherangebetween0.9V~VLVRmustexistforatimegreaterthanthatspecifiedbytLVRintheA.C. characteristics.Ifthelowsupplyvoltagestatedoesnotexceedthisvalue,theLVRwillignorethe lowsupplyvoltageandwillnotperformaresetfunction.TheactualVLVRvaluecanbeselectedvia configurationoptions. LV R In te r nal R es et t RS TD + t SST Low Voltage Reset Timing Chart Note:tRSTDispower-ondelay,typicaltime=100ms Watchdog Time-out Reset during Normal Operation TheWatchdogtime-outResetduringnormaloperationisthesameasahardwareRESpinreset exceptthattheWatchdogtime-outflagTOwillbesetto"1". t RS TD + t SST WD T Ti me - out In te r nal R es et WDT Reset during Normal Operation Timing Chart Note:tRSTDispower-ondelay,typicaltime=100ms Watchdog Time-out Reset during Idle/Sleep mode TheWatchdogtime-outResetduringIdle/Sleepmodeisalittledifferentfromotherkindsofreset.Most oftheconditionsremainunchangedexceptthattheProgramCounterandtheStackPointerwillbe clearedto"0"andtheTOflagwillbesetto"1".RefertotheA.C.CharacteristicsfortSSTdetails. t SST WD T Ti me - out In te r nal R es et WDT Time-out Reset during Idle/Sleep Timing Chart Note:ThetSSTcanbechosentobeeither1024or2clockcyclesviaconfigurationoptionifthe systemclocksourceisprovidedbyERCorHIRC.TheSSTis1024forHXTorLXT. |
类似零件编号 - HT48R068B_15 |
|
类似说明 - HT48R068B_15 |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |