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29 Threads found on edaboard.com: Rambo
I hope you are not using a PNP transistor... /rambo
There are types of EEPROMs that have one or two address pins connected to GND internally. Both Microchip and ST have these types, but I don't know about Philips. /rambo
rambo, check this (from 12F675 datasheet): Note: The ANSEL (9Fh) and CMCON (19h) registers (9Fh) must be initialized to configure an analog channel as a digital input. Pins configured as analog inputs will read ?0?. The ANSEL register is defined for the PIC12F675. best regards
There is no difference - a reset will load 0000h into the Program Counter. /rambo
It depends entirely on the LCD you are using. Read this: /rambo
Beware of the possibility of electrocution... :sm11: Read paragraph 30.16 of this text: /rambo
I doubt that you will be able to measure any amplitude difference. Instead you should make use of the phase difference. I would solve the problem with analogue circuitry and not use ADCs - they add unnecessary complexity to the design. /rambo
Why don't you build it using relays instead? Then it will also sound really nice. :wink: But seriously, build yourself a true analogue computer instead - it is much easier to build and you can for instance simulate lunar landings: /rambo
I don't think the venerable 741 will be happy with a supply of only 5 V. I belive the minimum is ?5 V, or +10 V in your case. You can read about basic opamp stuff here: "Real men don't simulate." :wink: /rambo
"Do Not Populate" means exactly what it says - do not put a resistor there. It is typical for design work to include extra components that are used only during development. They are discarded in the final product. /rambo
I cannot say if it is the best, but it might be good enough: /rambo
LM566 is the same. /rambo
Tjaba, It sounds like an ordinary ROM version of the 80C51. I think Intel used the D prefix for their ceramic packages. /rambo
Some instructions read the port latch and some read the port pin. Study section 4 of this datasheet carefully to understand the difference: /rambo
Yes, but you have to resort to bit-banging. Check here for code: /rambo
Check if this high power operational amplifier, or a similar type, could do the trick: /rambo
The ICM7240 might be suitable, as far as functionallity goes. Whether it is accurate enough I leave for you to decide. /rambo
It is probably a pin that is used to test the chip in some way during production. Generally speaking one should always check this when second sourcing chips. In this case other vendors have the same pin marked NC. /rambo
I suggest that you build a simple active probe with an attenuation of 100:1. It might not prevent you from killing yourself, but it will protect your scope. :wink: /rambo
This might be of help to you: Boa sorte! /rambo