Searching \ for '[PIC]: F871 vs F874 vs F877' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/microchip/devices.htm?key=877
Search entire site for: 'F871 vs F874 vs F877'.

Exact match. Not showing close matches.
PICList Thread
'[PIC]: F871 vs F874 vs F877'
2001\02\15@101039 by Hardware Engineering

picon face
F871 has 2K of program memory, 128RAM and 64EEPROM
F874 has 8K of program memory, 368RAM and 256EEPROM
F877 seems to be similar to F874

Now, not withstanding the size of program memory, whats the diff between these
3 chip?

I'm anticiapting running out of 2K program memory so need to upsize to the 8K,
but will my code port over?

____________________________________________________________________
Get free email and a permanent address at http://www.netaddress.com/?N=1

--
http://www.piclist.com hint: To leave the PICList
spam_OUTpiclist-unsubscribe-requestTakeThisOuTspammitvma.mit.edu


2001\02\15@111218 by David P. Harris

picon face
Hi-
87x series have different serial protocols, so make sure you pick one that is
compatible with you project.
David

Hardware Engineering wrote:

{Quote hidden}

--
http://www.piclist.com hint: To leave the PICList
piclist-unsubscribe-requestspamKILLspammitvma.mit.edu


2001\02\15@111842 by Alan B. Pearce

face picon face
> F871 has 2K of program memory, 128RAM and 64EEPROM
> F874 has 8K of program memory, 368RAM and 256EEPROM
> F877 seems to be similar to F874
>
> Now, not withstanding the size of program memory, whats the diff between these
> 3 chip?

The upper bytes of RAM map differently between banks when the RAM size changes.
Certainly happens between 873/4 and 876/7, not sure about 871 to 874/7, but
check.

--
http://www.piclist.com hint: To leave the PICList
.....piclist-unsubscribe-requestKILLspamspam.....mitvma.mit.edu


2001\02\15@113457 by James Paul

flavicon
face
Also, the 874 and 877 are 40 pin parts and differ in memory size as
you stated.  The 871, 872 and 873 are 28 pin parts, and also differ
in memory size.  FYI, the 40 pin parts also have a PLCC package
available.
                                        Regards,

                                          Jim


On Thu, 15 February 2001, "Alan B. Pearce" wrote:

{Quote hidden}

jimspamspam_OUTjpes.com

--
http://www.piclist.com hint: To leave the PICList
@spam@piclist-unsubscribe-requestKILLspamspammitvma.mit.edu


2001\02\15@121418 by Bourdon, Bruce

flavicon
face
Not sure about the 'f871, but your 'f874 figures were too high:

Pic16F874 (and the Pic16F873):
 Program Mem. (Flash): 4096 bytes.
 Data Mem. : 192 bytes.
 EEPROM: 128 bytes.

Pic16F877 (and the Pic16F876):
 Program Mem. (Flash): 8192 bytes.
 Data Mem. : 368 bytes.
 EEPROM: 256 bytes.

Bruce.

-----Original Message-----
>> F871 has 2K of program memory, 128RAM and 64EEPROM
>> F874 has 8K of program memory, 368RAM and 256EEPROM
>> F877 seems to be similar to F874
>>

--
http://www.piclist.com hint: To leave the PICList
KILLspampiclist-unsubscribe-requestKILLspamspammitvma.mit.edu


2001\02\15@125448 by Drew Vassallo

picon face
> > The upper bytes of RAM map differently between banks when the RAM size
>changes.
> > Certainly happens between 873/4 and 876/7, not sure about 871 to 874/7,
>but
> > check.

Also make sure that the PCLATH is saved/restored during ISRs, CALLs or GOTOs
with any chip >2k bytes.  We already went through this last week :)

--Andrew
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com

--
http://www.piclist.com hint: To leave the PICList
RemoveMEpiclist-unsubscribe-requestTakeThisOuTspammitvma.mit.edu


2001\02\15@154149 by Djurre de Jong

flavicon
face
they said something about TYI an "PLCC package"
I dont have a lot experience, but can somebody tell me what exactly that is?
great,
Djurre

{Quote hidden}

Find the best deals on the web at AltaVista Shopping!
http://www.shopping.altavista.com

--
http://www.piclist.com hint: To leave the PICList
piclist-unsubscribe-requestEraseMEspam.....mitvma.mit.edu


2001\02\15@155357 by Spehro Pefhany

picon face
At 12:41 PM 2/15/01 -0800, you wrote:
>they said something about TYI an "PLCC package"
>I dont have a lot experience, but can somebody tell me what exactly that is?
>great,
>Djurre

A PLCC-44 (Plastic Leaded Chip Carrier) is a small square non-hermetic
(plastic)
package with "J" leads (leads bent under the chip). It is
smaller than a 40-pin DIP (often the extra 4 leads add no functionality).
It's also
one of the few packages that can be plugged into a reasonably priced SMT
production
socket. It can also be soldered directly to the board, or used with a
through-hole
socket.

For the complete picture go to here:  (it might be a couple of megs if that
matters)

http://www.microchip.com/Download/lit/suppdoc/package/00049q.pdf

and look at page 11-30.

Best regards,
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Spehro Pefhany --"it's the network..."            "The Journey is the reward"
EraseMEspeffspaminterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

--
http://www.piclist.com hint: To leave the PICList
RemoveMEpiclist-unsubscribe-requestEraseMEspamEraseMEmitvma.mit.edu


2001\02\15@172357 by James Paul

flavicon
face
It stands for "Plastic Leaded Chip Carrier"  This is typically a
square package with a dot or indent in the center of one side.
The pin directly under that dot or indent is pin 1.  The remaining
pins then are counted in the normal counterclockwise fashion.
Also these packages usually have the 'J' type leads.  And they
can come in a ceramic package with is otherwise identical to the
plastic package except for the fact that it's ceramic.

Hope this helps.


                          Regards,

                           Jim




On Thu, 15 February 2001, Djurre de Jong wrote:

{Quote hidden}

jimSTOPspamspamspam_OUTjpes.com

--
http://www.piclist.com hint: To leave the PICList
spamBeGonepiclist-unsubscribe-requestSTOPspamspamEraseMEmitvma.mit.edu


More... (looser matching)
- Last day of these posts
- In 2001 , 2002 only
- Today
- New search...