16F877A equal with more memory

Closed Thread
Results 1 to 8 of 8
  1. - 16th June 2009, 00:01 #1
    Tobias's Avatar
    Tobias
    Tobias is offline Member
    Join Date
    Jul 2007
    Posts
    221

    Default 16F877A equal with more memory

    I am currently using a 16F877A and need more code space soon. Can you suggest chips that will work with PBP and have the same 44 TQFP pinout?

    For example, I found the PIC18F46J11 but I don't see it as an option in the processor pull-down. Any suggestions?
  2. - 16th June 2009, 00:08 #2
    Melanie's Avatar
    Melanie
    Melanie is offline Prolific Poster
    Join Date
    Jul 2003
    Posts
    2,358

    Did you find this post helpful? Yes | No

    Default

    pic18F4420 & 18F4520

    http://ww1.microchip.com/downloads/e...Doc/39631E.pdf

    There are some very minor differences (eg ADC Register Bits have moved around) but it's almost a continuing progression with performance and features.

    Thereafter it carries on to the 4620...
  3. - 16th June 2009, 00:10 #3
    Tobias's Avatar
    Tobias
    Tobias is offline Member
    Join Date
    Jul 2007
    Posts
    221

    Did you find this post helpful? Yes | No

    Default

    muchos gracias
  4. - 16th June 2009, 02:24 #4
    Jumper's Avatar
    Jumper
    Jumper is offline Member
    Join Date
    Mar 2006
    Location
    China
    Posts
    266

    Did you find this post helpful? Yes | No

    Default more

    Hi,

    18F4620 or 18F46K20 (no eeprom)

    18F452 is also pin compatible but a bit old.
  5. - 16th June 2009, 04:07 #5
    tenaja's Avatar
    tenaja
    tenaja is offline Member
    Join Date
    Sep 2007
    Location
    USA, CA
    Posts
    271

    Did you find this post helpful? Yes | No

    Default

    Quote Originally Posted by Jumper View Post
    18F452 is also pin compatible but a bit old.
    Worse, it's at its End of Life, according to microchip.
  6. - 16th June 2009, 06:42 #6
    Jumper's Avatar
    Jumper
    Jumper is offline Member
    Join Date
    Mar 2006
    Location
    China
    Posts
    266

    Did you find this post helpful? Yes | No

    Default End of life

    Components don't die.. they slowly fade away. I just mentioned it because there are still millions of them out there.
  7. - 16th June 2009, 07:57 #7
    Melanie's Avatar
    Melanie
    Melanie is offline Prolific Poster
    Join Date
    Jul 2003
    Posts
    2,358

    Did you find this post helpful? Yes | No

    Default

    With the 4520 being cheaper and better, there is no reason to continue with the 452.

    The 18F46K20 DOES have 1024 bytes of EEPROM...

    What you might be thinking of is the 18F46J11 series... it may not have EEPROM, but you obviously missed what it DOES have instead (which obsoletes the EEPROM completely)... and with an integral RTC as well, it's a winner for a lot of applications... shame it's not supported by PICBasic yet...
  8. - 16th June 2009, 08:04 #8
    Ioannis's Avatar
    Ioannis
    Ioannis is offline SuperMod
    Join Date
    Nov 2003
    Location
    Greece
    Posts
    4,115

    Did you find this post helpful? Yes | No

    Default

    Quote Originally Posted by Melanie View Post
    With the 4520 being cheaper and better, there is no reason to continue with the 452.

    The 18F46K20 DOES have 1024 bytes of EEPROM...

    What you might be thinking of is the 18F46J11 series... it may not have EEPROM, but you obviously missed what it DOES have instead (which obsoletes the EEPROM completely)... and with an integral RTC as well, it's a winner for a lot of applications... shame it's not supported by PICBasic yet...
    But be carefull, it is a 3.6 Volts (max) device!!! NOT a 5 Volt!

    Ioannis
    www.signalcom.gr
« Previous Thread | Next Thread »

Similar Threads

  1. Strange pic 16f877a memory loss
    By DavyJones in forum General
    Replies: 23
    Last Post: - 6th July 2009, 20:27
  2. Need the code to write to a memory
    By Hamlet in forum General
    Replies: 0
    Last Post: - 20th August 2007, 00:22
  3. Using on-chip EEPROM (DATA) memory like serial memory - possible?
    By flotulopex in forum mel PIC BASIC Pro
    Replies: 4
    Last Post: - 2nd March 2007, 06:12
  4. Use internal program memory like DATA memory
    By flotulopex in forum mel PIC BASIC Pro
    Replies: 2
    Last Post: - 30th December 2006, 18:38
  5. Clock connection to DS1802 from 16F877A
    By coyotegd in forum mel PIC BASIC Pro
    Replies: 7
    Last Post: - 3rd January 2006, 18:52

Members who have read this thread : 0

You do not have permission to view the list of names.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Forum Rules