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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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HT98R068-1 Fiches technique(PDF) 45 Page - Holtek Semiconductor Inc |
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HT98R068-1 Fiches technique(HTML) 45 Page - Holtek Semiconductor Inc |
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45 / 116 page  Rev. 1.10 44 �e���a�� 1�� �01� Rev. 1.10 45 �e���a�� 1�� �01� HT98R068-1 Two Way Radio 8-Bit MCU HT98R068-1 Two Way Radio 8-Bit MCU PFD Output The PFD function output is pin-shared with an I/O pin. The output function of this pin is chosen using the CTRL0 register. Note that the corresponding bit of the port control register, must setup the pin as an output to enable the PFD output. If the port control register has setup the pin as an input, then the pin will function as a normal logic input with the usual pull-high selection, even if the PFD function has been selected. A/D Inputs The device has 8 inputs to the A/D converter. All of these analog inputs are pin-shared with I/O pins. If these pins are to be used as A/D inputs and not as I/O pins then the corresponding PCRn bits in the ANCSR0 registers, must be properly setup. There are no configuration options associated with the A/D converter. If chosen as I/O pins, then full pull-high resistor configuration options remain, however if used as A/D inputs then any pull-high resistor configuration options associated with these pins will be automatically disconnected. Audio Processor Pins Pins PB4~PB7 on Port B can be used as Audio processor I/O pins. This function is controlled using the SPICR register. Pin Remapping Configuration The pin remapping function enables the function pins INT, TMR0 and PFD to be located on different port pins. It is important not to confuse the Pin Remapping function with the Pin-shared function, these two functions have no interdependence. The PCFG bit in the CTRL0 register allows the three function pins INT, TMR0 and PFD to be remapped to different port pins. After power up, this bit will be reset to zero, which will define the default port pins to which these three functions will be mapped. Changing this bit will move the functions to other port pins. Examination of the pin names on the package diagrams will reveal that some pin function names are repeated, this indicates a function pin that can be remapped to other port pins. If the pin name is bracketed then this indicates its alternative location. Pin names without brackets indicates its default location which is the condition after Power-on. PCFG Bit Status PCFG Bit 0 1 Pin Mapping INT/PA� TMR0/PA� P�D/PA1 INT/PB4 TMR0/PB5 P�D/PB6 |
Numéro de pièce similaire - HT98R068-1_13 |
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Description similaire - HT98R068-1_13 |
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