Português; |; 1 Document; |; Views. Apostila de Microprocessadores e Microcontroladores – argeek · Apostila de. Apostila de Sistema de Computação Digital. Prof. Walteno .. Dessa forma, os microprocessadores têm conduzido a evolução tecnológica da computação, pois . Apostila Codigo de Resistores e Capacitores Apostila de MicroProcessadores I – Microprocessadores e Microcontroladores –
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MICROPROCESSADORES
Defined data is fully declared and known at compile time. This allocation is automatic. Approximately 50ua average current will be consumed. The CON syntax is as follows: A digital-analog converter can be made by connecting the pin to a resistor which goes to a cap which goes to VSS.
The text following ‘DATA’ is usually a list of mucroprocessadores which can be constant expressions.
The symbol name will be assigned a constant value as if via CON which is the current data pointer. STOP Execution is frozen, but low-power mode is not entered.
When done, pin will be placed in input mode to allow the voltage to remain until another PWM is executed. In the above example assuming this was the first DATA statement in the program”table” becomes a constant symbol of value 0; “Here is a string This is handy for having a single declaration which gets accessed throughout your program. Freq2 is optional and specifies a second frequency.
For example, to convert a potentiometer setting to a number: Alt-M is a quick way to assess how much RAM you’ve used. It is advanced by 1 for each byte declared.
Here are all the variable modifiers: This allows you to change programs while keeping data, assuming both programs defined the same stretch of memory as undefined DATA. Milliseconds specifies how long to output the frequency s. The resistor-cap junction will reflect the duty V during and after PWM.
END is terminated only by a hardware reset. Keep in mind that you may make alias names for the pin variables: Here is an example DATA statement: The result will be written into variable. It may be necessary to place a series resistor to the pot to prevent a short from the high pin to VSS. The pin may be filtered by an RC circuit to achieve a clean sine-waves. Use Alt-M to see this. Freq1 specifies the first frequency in 1Hz units Hz. The VAR usage options are as follows: Non-unique variables are in-whole or in-part derived from unique variables and get assigned within the unique-variable memory.
NAP x Enter low-power mode for a short period. Your data, on the other hand, builds from the start of memory towards the end.
High-Z speakers may be driven with a coupling cap and a filter cap. Adjusting the pot causes the returned value to go up or down. For defining unique variables: Initially, the DATA location is set to 0.
RCTIME pin,state,variable Pin will be placed in input mode and time will be measure in 2us units while pin is in ‘state’.
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The x values for NAP are as follows: Reset will end STOP. Duty is an 8-bit value which specifies the duty-cycle. PWM pin,duty,cycles Pin will be temporarily made an output while it is modulated.
The pin may be filtered by an RC circuit to achieve a clean sine-wave s. Enviado por caetano flag Denunciar.
apostila de microprocessadores UEL
Enviado por caetano flag Denunciar. Defined and undefined data are declared as follows: Alt-M lets you see the result of this process.
DATA statements are used to build data into unused memory. The default on and off times are ms and 50ms.
MICROPROCESSADORES
The compiler will always tell you when you have a conflict. The sum of program and data memory cannot exceed the 2K byte limit. Undefined data is the mere allocation of data space, while not assigning values into the bytes of EEPROM to be done at run-time, instead.