 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
HT66F20 Datasheet(PDF) 63 Page - Holtek Semiconductor Inc |
|
|
|||||||||||||||||||||||||||||
HT66F20 Datasheet(HTML) 63 Page - Holtek Semiconductor Inc |
|
|
63 / 298 page  Rev. 1.90 6� �e���a�� 18� �01� Rev. 1.90 6� �e���a�� 18� �01� HT66F20/HT66F30/HT66F40/HT66F50/HT66F60 HT66FU30/HT66FU40/HT66FU50/HT66FU60 Enhanced A/D Flash Type 8-Bit MCU with EEPROM HT66F20/HT66F30/HT66F40/HT66F50/HT66F60 HT66FU30/HT66FU40/HT66FU50/HT66FU60 Enhanced A/D Flash Type 8-Bit MCU with EEPROM Operating Mode Switching Thedevicecanswitchbetweenoperatingmodesdynamicallyallowingtheusertoselectthebest performance/powerratioforthepresenttaskinhand.Inthiswaymicrocontrolleroperationsthat donotrequirehighperformancecanbeexecutedusingslowerclocksthusrequiringlessoperating currentandprolongingbatterylifeinportableapplications. Insimpleterms,ModeSwitchingbetweentheNORMALModeandSLOWModeisexecuted usingtheHLCLKbitandCKS2~CKS0bitsintheSMODregisterwhileModeSwitchingfromthe NORMAL/SLOWModestotheSLEEP/IDLEModesisexecutedviatheHALTinstruction.When aHALTinstructionisexecuted,whetherthedeviceenterstheIDLEModeortheSLEEPModeis determinedbytheconditionoftheIDLENbitintheSMODregisterandFSYSONintheWDTC register. WhentheHLCLKbitswitchestoalowlevel,whichimpliesthatclocksourceisswitchedfromthe highspeedclocksource,fH,totheclocksource,fH/2~fH/64orfL.IftheclockisfromthefL,thehigh speedclocksourcewillstoprunningtoconservepower.Whenthishappensitmustbenotedthatthe fH/16andfH/64internalclocksourceswillalsostoprunning,whichmayaffecttheoperationofother internalfunctionssuchastheTMsandtheSIM.Theaccompanyingflowchartshowswhathappens whenthedevicemovesbetweenthevariousoperatingmodes. SL E EP0 HA LT i ns tr uc ti on i s ex ec ut ed f SYS of f CP U st op ID LE N= 0 f TB C of f f SU B of f WD T & L VD o ff NO RM AL f SYS =f H ~f H /6 4 f H o n CP U ru n f SYS o n f TB C o n f SU B o n ID LE 1 HA LT i ns tr uc ti on i s ex ec ut ed CP U st op ID LE N= 1 FS YS ON =1 f SYS o n f TB C o n f SU B on ID LE 0 HA LT i ns tr uc ti on i s ex ec ut ed CP U st op ID LE N= 1 FS YS ON =0 f SYS o ff f TB C o n f SU B o n SL OW f SYS =f L f L o n CP U ru n f SYS o n f TB C o n f SU B o n f H o ff SL E EP1 HA LT i ns tr uc ti on i s ex ec ut ed f SYS o ff CP U st op ID LE N= 0 f TB C o ff f SU B o n WD T or L VD o n |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
