| View previous topic :: View next topic |
| Author |
Message |
HGHK
Joined: 29 Jun 2010
Posts: 33
|
| difference between PIC16F876,PIC16F876A |
 Posted: Mon Sep 20, 2010 5:54 am |
 |
|
| What's difference between PIC16F876, PIC16F876A and PIC16LF876 ? tell me please. |
|
 |
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Mon Sep 20, 2010 10:00 am |
|
|
| Quote: | | What's difference between PIC16F876, PIC16F876A ? |
Go to the Microchip webpage for the 16F877A. Download the following
document which summarizes the differences between the non-A and the A
chips: | Quote: |
PIC16F87X to PIC16F87XA Migration
|
http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010242
On the same webpage, download the 16F877A data sheet.
Look in this section:
| Quote: | | 17.0 ELECTRICAL CHARACTERISTICS |
Near the start of that section, you will see these two graphs, which show
the major reason for using an "LF" chip (or the reason not to use it).
| Quote: |
FIGURE 17-1: PIC16F87XA VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL, EXTENDED)
FIGURE 17-2: PIC16LF87XA VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL) |
|
|
|
ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
|
|
| Posted: Mon Sep 20, 2010 10:27 am |
|
|
These are all very old chip models and not recommended for new designs.
You are happy to use them if these are laying around, but for a new project it is better to use a newer model as these have more memory, more features, operate over the full 2.0 - 5.5V range (no more separate LF parts) and use less power (== smaller power supply == saving money). Maybe best of all, these newer chips are also a lot cheaper: for example the PIC16F876 costs US$4.90 when you buy them at 100 pieces, the replacement PIC16F886 costs US$2.15 when bought by the 100. |
|
|
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
