Flashing LED with PIC16F627

[jakeselectronics]

@ Jakes electronics, Thanks for the circuit I have got it to work What kind of voltage does each pin allow out to the component? If i was to create a circuit for a motor would I have to use a transistor?
Thanks
Rhys

The output will give 5 volts (providing the input is 5 volts) but the I/O pins on a pic can only 'sink' and 'source' up to 25mA. (See section 17 of the datasheet "Electrical Specifications")

Maximum output current sunk by any I/O pin..........................................................................................................25 mA
Maximum output current sourced by any I/O pin ....................................................................................................25 mA

So the answer about having to use a transistor is yes.
Anything over 25mA will need some type of transistor.

 

[rasclerhys]

Ok Thanks, and for the code provided on your site, what is it written in (C, BASIC etc)???
Thanks
Rhys

 

[jakeselectronics]

That is called Assembly. Or Assembler. (Depends what you read or who you ask lol)
The file extension is .asm

Languages like C compile down to assembly first before being coverted to a .HEX file. (The Hex file being the data written to the chip)
(you'll notice i also provide the .HEX file so if you had a 628A, you could burn that straight to your chip)

C and other lanuages are almost like a "short hand".
Every line of code can be converted to assembly (and does when compiled). But assembly can be heavily condesed by using another languages.

Lets try somethings....
I dont know any other language so I cann't give you an example....
So somebody, please help me out haha....

For those that know assembly AND C, give an example of a snippet of code in each that achieve the same thing.
for example an "If" statement....

 

[rasclerhys]

Thanks, do you know of any good sites to learn Assembly?
Thanks
Rhys

 

[be80be]

This is one of the best site there is

Gooligum Electronics

**broken link removed**

 

[rasclerhys]

Thanks
Rhys

 

[maganaMT]

driving a 74164(sipo) using a pic

how do i shift bits into a 74164 shift register?

 

[jakeselectronics]

1. Power the chip,
2. hold the data input hi or low
3. raise and lower (set and clear) the clock input to shift data bit into chip,
4. Goto step 2