SPI Memory 128Mb (16MB)
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FWIW: I have just seen a Spansion SPI memory with 16MBytes of Flash at 3V. Spansion was a joint venture betwen AMD and Fujitsu.
These memories are being used to configure Xilinx FPGA's.
Given·the density, I thought it may be useful for the propeller. No idea of cost. The pinout (8 pin)·is different from I2C (and·protocol). Also supposedly faster (haven't checked).
http://www.spansion.com/flash_memory_products/serial_interface.html
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These memories are being used to configure Xilinx FPGA's.
Given·the density, I thought it may be useful for the propeller. No idea of cost. The pinout (8 pin)·is different from I2C (and·protocol). Also supposedly faster (haven't checked).
http://www.spansion.com/flash_memory_products/serial_interface.html
·
Comments
https://emwcs.avnet.com/webapp/wcs/stores/servlet/Product_-1_500201_500201_part_0_5719814
about $5
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JMH - Electronics: Engineer - Programming: Professional
Best,
Bill
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www.mikronauts.com - a new blog about microcontrollers
From the data sheet: It has a page size of 256 bytes. The page write command takes typically 1.5ms (but up to 3ms). So the peak data write rate is 256 / 1.5ms = 170K bytes per second.
This is slower than SD, for which some quite good SPI drivers have already been written.
BTW, you don't *have* to use FSRW with SD cards. In fact you don't have to use any file system at all if you don't want to.
Secondly, I can buy SD cards at my local food store!
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I don't know how that compares to an SD[noparse]:)[/noparse]