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at91rm9200 board
Hi,
I`m looking for a simple board with tha AT91RM9200, or for some reference design schematics. So far I was only able to find an announcment for an Atmel board of $5000,-
On the Atmel site no schematics are available.
Any suggestions, links ?
Whoops
I wonder if it`s possible to have BGA IC`s mounted on a board for REASONABLE cost.
( in case of a few pcs )
I head some prices of $170 for one chip...but guess it`s not that much work.
Any suggestions ?
I thought that one difference between the SA110 and the SA1110 was that the SA1110 support breakpoints via JTAG. I guess then some debugging must be possible.
but couldn`t find it eather, so I guess it`s not further developed.
I was talking about really small qty like 1 or 2 pcs. Basically diy is possible, but guess I`m maybe a bit lazy. Often need to have a display and buttons ( rectangle holes ) making them yourself is very time consuming and the result can easily be very poor.
I guess the must be some companies...
Nowadays there are several pcb manufacturers which can produce pcb`s for prototype for a reasonable price.
I was wandering of there are any companies which can make front panels for prototypes.
( printing the text, and cuttong out the holes )
Anybody here knows a company who does ?
I am planning to build a microcontroller power supply. Should be symmetrical, 0-30V and adjustable current limit.. both voltage and current limit controlled via D/A converters.
Anyone out here who already did something like this, or has some suggestions ...
Any C166 users out here who knows the answer ?
When the C166 is used with byte wide memories a WRH and WRL signal need to be used to write only to one chip when byte accesses are made.
BUT what if a 16 bit wide memory is connected to the cpu ?? In case of a byte write 2 bytes are written at a...
I tried with and MSP430F149....
at around 9.5 MHZ it starts to work unreliable ( couldn`t program anymore, with Vcc 3.3V ) so it seems there is not so much margin.
In all the list showed above it`s probably based on sales qty by vendor. But don`t forget that the 8051 is one of the few microcontrollers made by multiple vendors :
Phlips
Atmel
Oki
Maxim-Dallas
Infineon
....
MAybe if you add their 8051 sales together it will beat the rest :smile:
I have built one which was in Elektor
a few years ago. Works quite well, except the the software is DOS.
Disadvantage is that you have to order 2PLD`s from elektor.
Clock speed was 50MHz
As zero crossing detector I use a double phase rectifier with two diodes, resultiging voltage applied to a comparator with REF level set low.
at the microcontroller I check if the comparator output is low for while to prevent triggering at false edges.
This is working now for many years withot...
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