Lpc2000

Tsvetan
 
Thanks for the insight and yes, these are rev B parts on my board.  I will search the list
for "latch up".
 
Thanks again,
Wayne

tsvetanusunov <tusunov@...> wrote:

--- In lpc2000@yahoogroups.com, "dharmaBum" <dharmabum@y...> wrote:
> 
> I'm working on a design that uses a LPC2106, but the design will be
> migrating to the LPC2138 on the next revision of the PCB.
> 
> The LPC2106 seems to have difficulty starting (code does not seem 
to 
> be executed) when the power supply slew rate exceeds a certain 
> rate.  I don't yet have detailed measurements as I just stumbled 
> across this in the lab.  
> 
> I will post the numbers after I do some careful measurements of the 
> 3.3 and 1.8 volt slew rates.  If I can determine what the CPU is 
> doing via the JTAG interface, I will share that too.
> 
check the LPC2106 revision, if it's REV.B search the messages for the 
latchup problem with LPC2106

Best regards
Tsvetan
---
PCB prototypes for $26 at http://run.to/pcb 
(http://www.olimex.com/pcb)
PCB any volume assembly (http://www.olimex.com/pcb/protoa.html)
Development boards for ARM, AVR, PIC, MAXQ2000 and MSP430  
(http://www.olimex.com/dev)





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