data collection and storage.....

[Chris Conlon]

At 06:44 AM 9/1/00 +0200, =?US-ASCII?Q?Jorgen_Karlsson?= wrote:

>> The 8535 is unable to directly address external storage as it has no
>> external address bus. However, the SPI can be used to talk directly
>> to serial flash-type storage chips - though development of such a
>> facility is perhaps beyond what you think are you limits.
>
>Lots of code snippets are available for Bascom, most likely a SPI eeprom
>example are available. ....time has passed five minuits to be exact.... I
>found a I2C eeprom example, http://www.mcselec.com/download/avr/samples.zip.
>i2c.bas is the file you want to check out.  The small footprint of the

If you're choosing between I2C eeproms and SPI eeproms, and you care
about size, it'd be wise to check what's available in what size. I've
been working with Microchip and Atmel. Both have about the same max
size part in I2C, 256k bits. Microchip's biggest SPI part is only 64k
bits, but Atmel has SPI parts up to 1M bits. Note that most if not
all of the larger parts are page write only (you must write in 32-64-128
byte blocks), so if you're on a very tight RAM budget this may be a
consideration. The smaller parts typically allow you to write any
contiguous block of bytes that fits within a single page, which can be
a lot more convenient.

Dunno where ST fits in, I don't go there.

   Chris C.

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org