Author Topic: Minimax-51/C board Eeprom  (Read 8592 times)


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Minimax-51/C board Eeprom
« on: June 10, 2004, 09:14:11 am »
We found that one of the two Minimax-51/C board Eeprom pin connections go to the 8051 via PIC MCU.

1. It is not clear whether standard Eeprom driver of the Eeprom for the 8051 would work with this configuration. Any comment on that?

2. What is the purpose of connecting Eeprom to 8051 through PIC?

3. Can the above, in any way, interfare with standalone 8051 program execution, using Eeprom?


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Re: Minimax-51/C board Eeprom
« Reply #1 on: June 16, 2004, 09:39:38 am »
EEPROM uses P1.6 and P1.7 port pins of 8051 CPU.
Please download and see the schematics in MINI-MAX/51-C Technical  Manual. P1.6 is clock and P1.7 is data.
There is an example project for the EEPROM under \\bipom\\devtools\\microc\\examples\\8051\\eeprom\\24c512.
PIC16C58  is also on the same I2C bus. Main 8051 uses I2C to send commands to the PIC to set the LCD contrast level. PIC can also access the EEPROM directly to modify the EEPROM using WinLoad software from a PC while 8051 is not running.
Also, please see examples under C:\\bipom\\devtools\\MicroC\\Examples\\8051\\tiny\\mm51cTest (
note, the newest release on WEB contains these examples only).
Best regards, Vitaliy  :)