74HCT688 DATASHEET PDF
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Then take as long as you like to decode. Do you already have an account? I don’t know why anyone would want to do something so simple in such a time-consuming way. You did not say which PIC you datawheet using? As for testing the incoming data, why do it bit by bit? The contents of PortD are latched by an external strobe, which also causes an interrupt, or a flag that you can poll. Apr 24, 7, 1, Quote of the day. Nov 9, Jun 6, 3, 5, What is unstated in the problem is the data rate, which determines how long we datashdet to process each incoming data chunk.
If available, use the TBLRD instruction to read the converted value from within a byte long table. A separate active low output for each character? Electrical Engineers and Chocolatiers Have Created Something Delicious Engineers datasjeet applying a technique used in crude oil processing to create low-fat chocolate that actually tastes delicious.
Maybe this can solve my timing issue Posted by nurul mia in forum: May 11, 5, 1, Something to duplicate the function of 74HCT equality comparator. Feb 14, The default is 4MHz. Nov 10, Posted by new in forum: What the Wileyfox Smartphone Gets Right A new player as a rogue smartphone has emerged in a competitive market: I attached the datasheet of 74HCT Eatasheet wrote the equivalent in C tacked onto the end of a program I’m working on and compiled it.
Nov 9, 2. Nov 9, 6. If so, what duration for the output? Feb 12, No, create an account now. Nov 8, 1.
Use a ‘computed goto’ with destinations 1 for each of the possible 7-bit values. In this case data is assumed to come in on PortD, and PortB. Nov 9, 7. Where and how to simulate an equivalent circuit for Posted by selvac19 in forum: Embedded Systems and Microcontrollers.
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Thus we have at least 20 instructions in this 20 uS slice of time. If you have the PIC16F or I don’t know which other processors, you have a “parallel slave port” available. Wileyfox delivers an SD card, a big battery, security and a bit more. Discussion in ‘ Embedded Systems and Microcontrollers ‘ started by beowulfNov 8, Yes, subtraction is the way to go.
Yes, my password is: Now for my question, is there a faster way to implement this routine?
How-to on PIC equivalent for equality comparator 74HCT | All About Circuits
When the strobe appears, copy this port to another file register take a “snapshot”. Your name or email address: Nov 9, 5.
Lol, why i didnt think of that the first time??? Do a subtraction with the character you want to test against, and check if the result is zero. Aug 21, 11 0. Nov 9, 9.
Nov 9, 4. Oct 14, 1,