[oopic] Re: Extra memory (Future plans for robot to map room details)

--- In oopic@yahoogroups.com, "jon_mark_go" <jonmarkgo@...> wrote:
>
> So basically the 256k EEPROM chip I installed is only really usable by
> the oEEPROM object, not by the oopic itself for storing the program?

Even the oEEPROM object is limited to a 16 bit (64kB) address.

About the only way to use I2C based EEPROMs is in 64kB devices with
different I2C addresses. You can have 8 such devices. The OOPic S
board has a socket for a 2d device (E1). The R board has just one
device so the other 7 would need to be somewhere else.

But, are we talking bits or bytes? A 64kB (byte) device is 512kb
(bits). The largest device from Microchip is 1Mbit or 128kB and it
uses a bizarre control sequence. Further, only 4 devices can be
addressed. In the end, it just saves package space over 2 of the 64kB
devices at the cost of a complex control strategy - block switching.

Richard

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