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BS85C20-5 Datasheet(PDF) 7 Page - Holtek Semiconductor Inc

Part # BS85C20-5
Description  Touch Key Flash Type 8-Bit MCU with LCD/LED Driver
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

BS85C20-5 Datasheet(HTML) 7 Page - Holtek Semiconductor Inc

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Rev. 1.20
6
����st 10� 2012
Rev. 1.20
7
����st 10� 2012
BS85B12-3/BS85C20-3/BS85C20-5
Touch Key Flash MCU with LCD/LED Driver
BS85B12-3/BS85C20-3/BS85C20-5
Touch Key Flash MCU with LCD/LED Driver
Features
CPU Features
• OperatingVoltage:
fSYS
=8MHz:VLVR~5.5V
fSYS
=12MHz:2.7V~5.5V
fSYS
=16MHz:4.5V~5.5V
• Powerdownandwake-upfunctionstoreducepowerconsumption
• Oscillatortypes:
External32.768kHzCrystal–LXT
InternalRC–HIRC
Internal32kHzRC–LIRC
• Multi-modeoperation:NORMAL,SLOW,IDLEandSLEEP
• Allinstructionsexecutedinoneortwoinstructioncycles
• Tablereadinstructions
• 63powerfulinstructions
• Upto8subroutinenestinglevels
• Bitmanipulationinstruction
Peripheral Features
• Fullyintegrated12or20touchkeyfunctions--requirenoexternalcomponents
• FlashProgramMemory:2K×15or4K×15
• RAMDataMemory:256×8or384×8
• EEPROMMemory:64×8or128×8
• WatchdogTimerfunction
• Upto38bidirectionalI/Olines
• TwoorthreeTimerModules
• DualTime-Basefunctionsforgenerationoffixedtimeinterruptsignals
• I2CandSPIinterfaces
• Lowvoltageresetfunction
• Softwarecontrolled4×14or4×22LCDdriverwith1/3bias
• Softwarecontrolled6×8or8×14LEDdriver


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