Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
07/02/03 02:16
Read: times


 		 #49823 - Short Timing delays
When interfacing peripherals to MCU in the memory mapped mode, certain of the bus timings are already fixed. Like for instance if I need to interface a memory chip in this mode with the 74138 handling the address decoding, I guess there is little I can do to alter the tming sequence ( for the given hardware ) in which RD# or #WR signals arrive at the memory chip in relation to the chip select and data pulses.

The query is : Suppose in a particular setup I need to delay the #WR signal by 50 nanosecond to the memory chip then what are the options ? Introducing another gate in the path may fetch this with the additional propogation delay - but at times may or may not be physically possible.

I am looking for some guidelines in this respect. ( The memory chip is just an example - it could be any peripheral.)

Incidentally I did a search for 'short timing delays' and landed on this good article Bus Cycles from Avocet.
http://www.avocetsystems.com/company/a...buscyc.htm


Thanks

Raghu


List of 56 messages in thread
TopicAuthorDate
Short Timing delays            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      Applications of 80C320            01/01/70 00:00      
         RE: Applications of 80C320            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
         RE: Short Timing delays            01/01/70 00:00      
            RE: Short Timing delays            01/01/70 00:00      
               RE: Short Timing delays            01/01/70 00:00      
                  RE: Short Timing delays            01/01/70 00:00      
                     RE: Short Timing delays            01/01/70 00:00      
                        RE: Short Timing delays            01/01/70 00:00      
                           RE: Short Timing delays            01/01/70 00:00      
                              RE: Short Timing delays            01/01/70 00:00      
                                 RE: Short Timing delays            01/01/70 00:00      
                                    RE: Short Timing delays            01/01/70 00:00      
                              RE: Short Timing delays            01/01/70 00:00      
                                 RE: Short Timing delays            01/01/70 00:00      
                                    RE: Another interpretation            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
         Inverter string delay            01/01/70 00:00      
            RE: Inverter string delay            01/01/70 00:00      
               RE: Inverter string delay            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
         RE: Short Timing delays            01/01/70 00:00      
            RE: Short Timing delays            01/01/70 00:00      
               RE: Short Timing delays            01/01/70 00:00      
                  RE: Short Timing delays            01/01/70 00:00      
                     RE: Short Timing delays            01/01/70 00:00      
                     RE: Short Timing delays            01/01/70 00:00      
   RE: Short Timing delays - DeMorganite            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
         RE: Short Timing delays            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
         RE: Short Timing delays            01/01/70 00:00      
            RE: Short Timing delays            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
         RE: Short Timing delays            01/01/70 00:00      
            RE: Short Timing delays            01/01/70 00:00      
         Bubbles            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays- Erik            01/01/70 00:00      
         RE: Short Timing delays- Erik            01/01/70 00:00      
            RE: Short Timing delays- Abhishek            01/01/70 00:00      
               RE: Short Timing delays- Abhishek            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      
   RE: Short Timing delays            01/01/70 00:00      
      RE: Short Timing delays- Dave            01/01/70 00:00      
      RE: Short Timing delays            01/01/70 00:00      

Back to Subject List