STMicroelectronics Introduces ARM9 Microcontroler with 2.1 Mbytes Flash

Apr 23, 2008 3 Replies

STMicroelectronics has introduced an ARM9 with up to 2.1 Mbytes of on-chip Flash and 96 Kbytes of RAM:



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Embedded Ethernet, lots of other good stuff.



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Bill Giovino Executive Editor

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Flash and 96

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It is not "exactly" 2.1 Mbytes of on-chip Flash. This is a dual die device with a separate flash chip in the same package. They say it is single cycle access for sequential execution and has a "hefty" 15- entry branch cache for branch prediction. That probably works as well as the similar flash accelerators on other chips in this speed range.

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Hopefully it works better than the current STR9 flash interface does. The STR9 ARM9 is not faster than a 60MHz LPC2xxx ARM7.

Anton Erasmus

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Don't even get me going about how slow the external memory bus is. My 4 year old 60Mhz LPC2294 beats the snot out of a receint 96mhz STR912 design...

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