Lpc2000

--- In lpc2000@yahoogroups.com, "Sebastien Jacquemard" 
<sejacquemard@w...> wrote:
>
> Hello,
> I just would like to know if a lithium cell connect to Vbat on a 
LPC2138 save only the RTC or if it also save the SRAM contents ?
> 
> Thanks,
> Sebastien
> 
> [Non-text portions of this message have been removed]
>

Vbat on the LPC2138 and LPC2148 keeps only the RTC alive. To keep the 
SRAM up, you need to go into power down mode with a voltage connected 
to Vdd.
On the new LPC2101/2/3, Vbat can also buffer the SRAM.

Regards, Robert