PIC 16f877 with RTC - Electronic Circuits Projects Diagrams Free

ahmad-al3omar · 25th January 2007, 08:18 PM

Dear;
i found a problem in choosing anbd connecting the best RTC chip with the PIC 16F877 and progran\mming it in c .
can any one which know aboout this issue tell me about.

**Nigel Goodwin** · 25th January 2007, 08:42 PM

'Best' is a purely subjective term - you need to choose a device that you can source easily. You are also seriously limiting yourself by using C, there is a HUGE amount of assembler available, and really very little C. Have a look on the PICList, you may get some ideas there.

ahmad-al3omar · 25th January 2007, 09:09 PM

really i dont know how can i connect the rtc by the clk out or other terminals with pic 16f877a ,,, any schematic if available ?
thanx

**Nigel Goodwin** · 25th January 2007, 10:00 PM

It depends what interface the particular chip uses, some are I2C (there's an example in my tutorials), some are SPI, some use other interfaces.

donniedj · 26th January 2007, 02:28 AM

Off topic:
Over 15,000 post and Nigel still keeps Assembler and PIC Assembler alive. The world just go a little bit better one opcode at a time.

Sceadwian · 26th January 2007, 02:35 AM

Machine code? That's hardcore, or wait what's the word I'm looking for? Insane! That's it!

blueroomelectronics · 26th January 2007, 03:23 AM

You really need assembler to fully use the PIC properly. At least an understanding of it. It's not that hard, now if you want C use an 18F series PIC and skip the 16F

For a clock chip I'd use a DS1388 with trickle charger. (the DS1307 is good too but no trickle charger)

**Nigel Goodwin** · 26th January 2007, 07:40 AM

Quote:

Originally Posted by donniedj

Off topic:
Over 15,000 post and Nigel still keeps Assembler and PIC Assembler alive. The world just go a little bit better one opcode at a time.

There's nothing to keep alive, PIC's are generally programmed in assembler, and almost all the code available is in assembler - there are only small amounts of other languages on the net. This changes when you move to the 18F series, as they are optimised for C. MicroChip provide a free C compiler for it, and even the application notes are in C.

donniedj · 26th January 2007, 10:02 PM

Good.

For now anyway.

atferrari · 26th January 2007, 11:40 PM

Quote:

Originally Posted by Nigel Goodwin

........This changes when you move to the 18F series, as they are optimised for C. MicroChip provide a free C compiler for it, and even the application notes are in C.

Even then, they can still be easily programmed in assembler as the previous families. And the instruction set plus their internal organization makes programers' life, MUCH easier!

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25th January 2007, 08:18 PM	#1
ahmad-al3omar	PIC 16f877 with RTC Dear; i found a problem in choosing anbd connecting the best RTC chip with the PIC 16F877 and progran\mming it in c . can any one which know aboout this issue tell me about.

25th January 2007, 08:42 PM	#2
Nigel Goodwin	'Best' is a purely subjective term - you need to choose a device that you can source easily. You are also seriously limiting yourself by using C, there is a HUGE amount of assembler available, and really very little C. Have a look on the PICList, you may get some ideas there. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

25th January 2007, 09:09 PM	#3
ahmad-al3omar	really i dont know how can i connect the rtc by the clk out or other terminals with pic 16f877a ,,, any schematic if available ? thanx

25th January 2007, 10:00 PM	#4
Nigel Goodwin	It depends what interface the particular chip uses, some are I2C (there's an example in my tutorials), some are SPI, some use other interfaces. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

26th January 2007, 02:28 AM	#5
donniedj	Off topic: Over 15,000 post and Nigel still keeps Assembler and PIC Assembler alive. The world just go a little bit better one opcode at a time.

26th January 2007, 02:35 AM	#6
Sceadwian	Machine code? That's hardcore, or wait what's the word I'm looking for? Insane! That's it! __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."

26th January 2007, 03:23 AM	#7
blueroomelectronics	You really need assembler to fully use the PIC properly. At least an understanding of it. It's not that hard, now if you want C use an 18F series PIC and skip the 16F For a clock chip I'd use a DS1388 with trickle charger. (the DS1307 is good too but no trickle charger) __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/