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sound advice andrew. thanks. Very Happy

Generally,in PIC MCUs, ISRs are in fact under one "big handler" if you are in the assembly language level. It is the programmer's responsibility to decode which particular part of the MCU ha ...

Thanks Andrew. I am just thinking of spending few more dollars for another chip ( a PIC18F2550 perhaps) to perform the MMC controller funtion. This will free the 4550 for other tasks. The applicatio ...

Hello!
Has anyone here benchmarked the MMC over SPI transfer rate when using either FAT 16 or 32 ? Software SPI is quite slow but my application requires me to use the hardware pin for TX ( PIC18F45 ...

If you will use the old approach - Time Division Multiplexing - which practically means alloting a time slot for each data transfer - then the limit is just your available pins. But this is a very ine ...

This is really more likely a hardware problem. I've experienced the same issue and later on found out the following:
1: Wrong connection of TX-RX (reversed) pins between the D9 connector & the ...

mikroE is good for beginners, but CCS C caters to beginners and professionals as well. Aside from the fact that mikroE's libraries are hidden, there is not much you can do to somehow flex your code. ...

Upgrade is really just an Option. Very Happy

There are even instances where you won't need the fuses at all as in the case of using a bootloader since the fuses area cannot be accessed by the bootloader. Also, in the final stage of burning your ...

I sent you a PM. check your folder. Wink

....a relay able to switch 8A reliably, will have quite a low coil resistance - though because of their inductance....

There is no relationship between the contact & coil ratings. I have here ...

First, the base drive resistors need to be smaller than 4.7K. The BD140, has a worst case current gain of just 40.
First, when you use a transistor for switching , you should not think of the curren ...

Can someone out there help trace the problem? I'm also getting this interrupt not being responded to. I even tried the example EX_SISR.C provided by CCS C but the problem remains. It is problematic on ...

you can use the complementary pair NA51W/NA52W . Or the equivalent 2N6121/2N6124 pair. But I dont' know exactly your load current. You just mentioned the relay rating (8A/24V). With these transistors ...

Power MOSFETS are inherently more expensive than bipolar transistors. However, you get less quiescent power consumption with MOSFETS , if cost is a concern, you can also use power transistors in doub ...