Re: need L290 substitute
- From: John Devereux <jdREMOVE@xxxxxxxxxxxxxxxxxx>
- Date: Thu, 17 Apr 2008 08:58:57 +0100
Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> writes:
Dave Platt wrote:
How fast do the bits change? Can you do it in softwareWay to go.
with a PIC/AVR/8051? ...
Seems likely! At a trade show yesterday I picked up a sample of a
Silicon Labs 336D development "stick". The daughter board's micro is a
QFN20 device with an 8051-compatible core, 16 kB of flash code space,
768 bytes of RAM, a ten-bit 200 ksps 16-channel AC, and a single
10-bit current-output DAC, runs at up to 25 MIPS using its onboard
oscillator or at lower speeds (onboard or RC or crystal).
Writing a lookup-table-based quadrature-to-value loop with a DAC
output would be easy and fast. Cost for the bare chips from Mouser is
$4.31 in onesies, under $3 in hundreds.
That's one of the issues, the 8051 species are usually not exaclty a
bargain. There is a price to be paid for reducing the effects of
obsolenscence.
They *are* obselete, that's why they are expensive. :)
[...]
The MSP430F2002 can be had for close to a buck in quantities. If only
TI wouldn't have dropped the ball on support. How is SiLabs' support?
--
John Devereux
.
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