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PROPEEPROM Read/Write/Verify EEPROM 24xx32 - 24xx1026 — Parallax Forums

PROPEEPROM Read/Write/Verify EEPROM 24xx32 - 24xx1026

zx81vgazx81vga Posts: 56
edited 2018-12-27 09:22 in Customer Projects
Hello Propellerfriends,

here is a new Project:

PROPEEPROM 1.0

320x240 VGA Text 16 Colors signaled as 640x480
SD/MMC
DS1307 RTC
PS/2 Keyboard

here to find:

http://propeller.ws-nbg.de/main.php

Greetings from Nuremberg, Germany

Werner

Comments

  • zx81vgazx81vga Posts: 56
    edited 2016-07-27 08:54
    Hello Propellerfriends,

    here is an Update:

    PROPEEPROM 1.2

    Changes in v1.1

    24xx1025 added
    FC File Compare added

    Changes in v1.2

    24xx1026 added


    I don't have a 24xx1025 / 24xx1026 now. :frown:

    I ordered 2, but it take 2 Weeks... :frown:

    Can anyone test 24xx1025 / 24xx1026 with v1.2 ???

    Thanks for Feedback

    Greetings from Nuremberg, Germany

    Werner

    http://propeller.ws-nbg.de/main.php
  • zx81vgazx81vga Posts: 56
    edited 2018-12-27 09:01
    Hello Propellerfriends,

    here is an Update:

    PROPEEPROM 1.4

    Changes in v1.4

    All ext. Data now in 1 File.

    Changes in v1.3

    Font now 160 Char's spare 192 Long's
    Screenshot removed spare 406 Long's
    Add Command "ERASE"
    Add Command "BLANK"
    Add Command "INFO"
    Add Command "CLOCK"
    Add Screensaver

    propeeprom_14_1.png

    propeeprom_14_2.png

    http://propeller.ws-nbg.de/main.php

    Have Fun...

    Greetings from Nuremberg, Germany

    Werner

  • PublisonPublison Posts: 12,366
    Thank you for your generous sharing of your projects.
  • macrobeakmacrobeak Posts: 354
    Werner,
    Thank you for sharing your projects.
    Your Propeller Page is a delight to visit, and you deserve many more hits.
    Keep up the good work!
  • zx81vgazx81vga Posts: 56
    edited 2018-12-27 09:17
    Hello Propellerfriends,

    here is an Update: :lol:

    PROPEEPROM v2.0

    Changes in v2.0

    Add 16 Pin ZIF-Socket for 2 EEPROM's
    Add Command "PROBE" Detect 24xx32, 24xx64, 24xx128, 24xx256, 24xx512, 24xx1025 and 24xx1026
    Add Command "EECOPY" Copy EEPROM1 to EEPROM2

    propeeprom_1.jpg
    propeeprom_1.gif
    propeeprom_2.png


    Here to find

    Have Fun...

    Greetings from Nuremberg, Germany

    Werner
  • PublisonPublison Posts: 12,366
    edited 2018-12-27 12:43
    zx81vga wrote: »
    Hello Propellerfriends,

    here is an Update: :lol:

    PROPEEPROM v2.0

    Changes in v2.0

    Add 16 Pin ZIF-Socket for 2 EEPROM's
    Add Command "PROBE" Detect 24xx32, 24xx64, 24xx128, 24xx256, 24xx512, 24xx1025 and 24xx1026
    Add Command "EECOPY" Copy EEPROM1 to EEPROM2



    Have Fun...

    Greetings from Nuremberg, Germany

    Werner

    Very nice work, as always.
  • Mark_TMark_T Posts: 1,981
    Nice looking project - I couldn't help noticing that there doesn't seem to be ceramic decoupling capacitors
    on both sides of the Propeller (or are they on the underside?)
  • zx81vgazx81vga Posts: 56
    @Mark_T

    I have build in 2 Electrolytic Capacitor's 0.1 uF
    one in Front (Pin 9 GND, Pin 12 VDD).
    one under the Propeller (Pin29 GND, Pin 32 VDD).

    Werner

    PS.
    I have no Capacitors in the Schematic. :confused:
    They are of course necessary.
  • Mark_TMark_T Posts: 1,981
    Yes, but where are the ceramic decoupling capacitors? I wouldn't trust electrolytic above a few MHz, decoupling
    has to handle fast edges (5ns or less).
  • Cluso99Cluso99 Posts: 18,069
    edited 2019-01-06 04:19
    Not likely 0.1uF. Need 0.1uF ceramics.
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