STMicroelectronics has introduced the STM8 8-bit low power microcontroller.
It is software compatible with ST's ST7 and offers better than 10x the performance.
It can run at anywhere from 1.6V to 5.0V supply current.
Bill Giovino Executive Editor
performance.
??! - you may like to re-read the press release, and data sheets more carefully. (and 5V is a voltage, not a 'supply current') :)
-jg
microcontroller.
the performance.
OUCH!!!!!!
That was a partial cut/paste, that sentence originally said "It can draw = only an 11mA supply current at 24MHz"
(hits self on side of head and skulks off in disbelief)
Thanks, Jim (he writes sheepishly)
-Bill.
Please do not post HTML to Usenet. Pure plain unadorned text is used. Some systems can be destroyed by reading evil HTML.
--
[mail]: Chuck F (cbfalconer at maineline dot net)
[page]:
Try the download section.
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Apparently it has quite high power consumption compared to let's say an ARM7TDMI core 1.2 mW/MHz @ 3V vs 0.21 mW/MHz for ARM. Uses up to 25 uA in sleep.
-- Best Regards, Ulf Samuelsson This is intended to be my personal opinion which may, or may not be shared by my employer Atmel Nordic AB
Now I know why my old-time power professor always referred to electronic "sneak currents"! In his field, he lost more current than that around the HV transmission line insulators.
Hard to find an ARM microcontroller (or comparable performance non-ARM) that draws much less than 25 uA in sleep. Even most of the Atmel AT91SAM7x parts seem to draw around that much, according to the data sheets. For instance, AT91SAM7S family typical is 34.3 uA (Atmel document 6175H dated
03-Dec-07, page 553).
And most of that 34 uA is coming from the on-chip regulator. The core uses 4 uA (current measured over AMP2).
You can disable the internal LDO and use an external LDO which would have an inherent power consumption of about 1 uA. This would of course cost extra, and use more space.
You can also look at the new 1.8V AT91SAM7L :-)
The 25 uA, should however be compared to similar 8/16 bit micros The X-Mega uses 1-2 uA in sleep with Brownout&RTC.
-- Best Regards, Ulf Samuelsson This is intended to be my personal opinion which may, or may not be shared by my employer Atmel Nordic AB
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