HT48R005 Просмотр технического описания (PDF) - Holtek Semiconductor

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HT48R005

Small Package 8-Bit OTP MCU

Holtek Semiconductor 

HT48R005/HT46R005

System Control Registers - CTRL0, CTRL1.........................................................19

Wake-up Function Register - PAWK ....................................................................19

Pull-high Registers - PAPU ..................................................................................19

Oscillator............................................................................................20

System Oscillator Overview..................................................................................20

System Clock Configurations................................................................................20

External Crystal/Resonator Oscillator - HXT ........................................................20

External RC Oscillator - ERC ...............................................................................20

Internal RC Oscillator - HIRC ...............................................................................21

Internal Low Speed Oscillator - LIRC ...................................................................21

Operating Modes ...............................................................................21

Mode Switching ....................................................................................................21

Standby Current Considerations...........................................................................21

Wake-up ...............................................................................................................22

Watchdog Timer ................................................................................23

Watchdog Timer Operation...................................................................................23

Reset and Initialisation .....................................................................24

Reset Functions ...................................................................................................24

Reset Initial Conditions .........................................................................................25

HT48R005............................................................................................................26

HT46R005............................................................................................................27

Input/Output Ports.............................................................................28

Pull-high Resistors................................................................................................28

Port A Wake-up ....................................................................................................28

I/O Port Control Registers.....................................................................................29

Pin-shared Functions............................................................................................29

I/O Pin Structures .................................................................................................29

Programming Considerations ...............................................................................29

Timer/Event Counters .......................................................................31

Configuring the Timer/Event Counter Input Clock Source .....................................31

Timer Registers - TMR.........................................................................................31

Timer Control Registers - TMR0C........................................................................31

Timer Mode ..........................................................................................................33

Event Counter Mode.............................................................................................33

Pulse Width Capture Mode...................................................................................33

Prescaler ..............................................................................................................34

PFD Function .......................................................................................................34

I/O Interfacing.......................................................................................................35

Programming Considerations ...............................................................................35

Timer Program Example.......................................................................................36

Rev. 1.20

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September 26, 2012

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