HT56R644 Ver la hoja de datos (PDF) - Holtek Semiconductor
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HT56R644 Datasheet PDF : 145 Pages
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HT56R62/HT56R65
HT56R642/HT56R644/HT56R654/HT56R656
TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
Serial Interface Registers....................................................................................................... 37
Port A Wake-up Register − PAWU......................................................................................... 37
Pull-High Resistors − PAPU, PBPU, PDPU........................................................................... 37
Register − CLKMOD.............................................................................................................. 37
LCD/LED Registers – LCDCTRL, LEDCTRL, LCDOUT1, LCDOUT2................................... 37
Miscellaneous Register − MISC............................................................................................. 37
Input/Output Ports.......................................................................................... 38
Pull-high Resistors................................................................................................................. 38
Port A Wake-up...................................................................................................................... 38
Port A Open Drain Function................................................................................................... 38
I/O Port Control Registers...................................................................................................... 39
Pin-shared Functions............................................................................................................. 39
I/O Pin Structures................................................................................................................... 40
Programming Considerations................................................................................................. 41
LCD and LED Driver....................................................................................... 42
Display Memory..................................................................................................................... 45
LCD/LED Registers................................................................................................................ 46
LCD Reset Function............................................................................................................... 49
Clock Source.......................................................................................................................... 49
LCD Driver Output.................................................................................................................. 49
LED Driver Output.................................................................................................................. 50
LCD Voltage Source and Biasing........................................................................................... 50
Programming Considerations................................................................................................. 51
Timer/Event Counters.................................................................................... 58
Configuring the Timer/Event Counter Input Clock Source..................................................... 58
Timer Registers − TMR0, TMR1, TMR1L/TMR1H, TMR2..................................................... 59
Timer Control Registers − TMR0C, TMR1C, TMR2C............................................................ 60
Configuring the Timer Mode................................................................................................... 62
Configuring the Event Counter Mode..................................................................................... 63
Configuring the Pulse Width Measurement Mode.................................................................. 64
Programmable Frequency Divider − PFD.............................................................................. 65
Prescaler................................................................................................................................ 65
I/O Interfacing......................................................................................................................... 65
Timer/Event Counter Pins Internal Filter................................................................................ 66
Programming Considerations................................................................................................. 66
Timer Program Example........................................................................................................ 67
Pulse Width Modulator................................................................................... 68
PWM Overview...................................................................................................................... 68
8+4 PWM Mode Modulation................................................................................................... 69
PWM Output Control.............................................................................................................. 69
PWM Programming Example................................................................................................. 70
Rev. 1.30
3
March 6, 2013
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