View previous topic :: View next topic |
Author |
Message |
weg22
Joined: 08 Jul 2005 Posts: 91
|
Recommendations on 18-pin PIC |
Posted: Mon Aug 01, 2005 8:19 am |
|
|
I have just realized that the PIC I am using (16F84) does not have enough memory for the program I'd like to implement. I was hoping someone could recommend another micro with more RAM (about 2 or 3 times as much) but about the same size and weight (i.e. a 40 pin PIC is way too heavy for my application).
Thanks in advance,
weg |
|
![](templates/subSilver/images/spacer.gif) |
rnielsen
Joined: 23 Sep 2003 Posts: 852 Location: Utah
|
|
Posted: Mon Aug 01, 2005 8:34 am |
|
|
Try looking at the following:
PIC16F648A
PIC16F819
PIC16F87
PIC16F88
Each one has 4-5 times the RAM and also have other additional features. IT looks like they cost a bit less too.
Ronald |
|
![](templates/subSilver/images/spacer.gif) |
MikeValencia
Joined: 04 Aug 2004 Posts: 238 Location: Chicago
|
|
Posted: Mon Aug 01, 2005 9:39 am |
|
|
You can easilly compare prices, RAM, ROM, pin count, etc., and filter them out at the Microchip website.
www.microchip.com
Click on:
PICmicro Microcontrollers --> Memory Type: FLASH
and you'll get an exhaustive table of all PIC flash pic parts. And for the most part, you can assume pin-to-pin compatibility among each of them. |
|
![](templates/subSilver/images/spacer.gif) |
ckielstra
Joined: 18 Mar 2004 Posts: 3680 Location: The Netherlands
|
|
Posted: Mon Aug 01, 2005 10:04 am |
|
|
PIC16F688, 14 pin, 7168 bytes ROM, 256 bytes RAM. And save another gram or two by using the internal oscillator. |
|
![](templates/subSilver/images/spacer.gif) |
asmallri
Joined: 12 Aug 2004 Posts: 1634 Location: Perth, Australia
|
|
Posted: Mon Aug 01, 2005 4:36 pm |
|
|
PIC18F1320 and pick up the 18F family benefits. _________________ Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
|
![](templates/subSilver/images/spacer.gif) |
MikeValencia
Joined: 04 Aug 2004 Posts: 238 Location: Chicago
|
|
Posted: Mon Aug 01, 2005 8:09 pm |
|
|
asmallri wrote: | PIC18F1320 and pick up the 18F family benefits. |
Yeah, i'd agree with Andrew especially since all I have is PCH.
For a somewhat simple program though, i'd get the cheapest one if several thousand of the product will be shipped. |
|
![](templates/subSilver/images/spacer.gif) |
|