LPC1857- Revision changes 'A' vs '-'- Impact on sleep and reset

[vivienwong]

Hi,

   I have 2 LPC1857 chips with different device revision:

1. ESD14440- (initial device revision)

2. ESD16030A (second device revision)

   I noticed that there is a different between the 2 device revision whereby when both are put into DeepPowerDown low power mode, the nRESET button would wake the ESD14440-  up but not the ESD16030A.  My workaround now is to use the event router bit 19 to detect low level of RESET_SETEN to wake the chip up (ESD16030A).

   What has changed between the 2 device revisions? Is there an errata to explain the differences between the 2 device revisions?

[thefallguy]

Searching for "LPC1800 errata" will provide the document you are looking for...