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VBAT input on LPC2103 CPU stops when too low.

Started by Sagaert Johan March 17, 2006
Hi

I see when shorting Vbat to ground the CPU stops running.
So i assume the CPU will also stop when there is an empty battery connected.

The datasheet only has this note :
[4] The RTC typically fails when VBAT drops below 1.6 V.

So i think this does not mean the CPU itself should stop when vbat is too
low.

Are there any issues with this ?

Johan
	

An Engineer's Guide to the LPC2100 Series

Umm... SRAM inside without power??
One Question:  Do we need 2 diodes outside or the power
switch is already build in the chip??

...beats me...Will try that out when I've my first 
LPC2103 board in 2 weeks time.
Regards

--- In lpc2000@lpc2..., "Sagaert Johan" <sagaert.j@...> 
wrote:
>
> Hi
> 
> I see when shorting Vbat to ground the CPU stops running.
> So i assume the CPU will also stop when there is an empty battery 
connected.
> 
> The datasheet only has this note :
> [4] The RTC typically fails when VBAT drops below 1.6 V.
> 
> So i think this does not mean the CPU itself should stop when vbat 
is too
> low.
> 
> Are there any issues with this ?
> 
> Johan
>