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Hello. I've a problem with LPC2103. I've two boards. The first-one is a Silica Demo Board with a Philips (with Philips logo) LPC2103. The second one is a home built board with only a NXP (note not Philps marked!) LPC2103 and just supplies and xtal.
I've a Keil uLink and I use uVision3 for Arm. So, I can program both MCUs and everything works well. Unfortunately I can debug just only the Silica demo boards, on my home built board doesn't work. If I put the MCU in run mode the program doesn't go; if I put a breakpoint the program doesn't stop. With Silica board I can do all of these operations.
I checked the layout and all board connections are correct respect to the schematic of jtag connector of uLink (got on Keil web site).
I sniffed all JTAG net and I didn't see any suspectous signal. No noise.
I pushed the power supply of core to 2.0V on my board like Silica board after reading an errata from NXP regarding a bonding dropout voltage....nothing appened.
May be a problem because I'm using an NXP marked MCU instead of a Phlips marked MCU? I didn't find any note regarding mask errata or similiar (silicon problem).
Can anyone help me?
Best Regards
Stefano
Processors have steppings. If you look in the Errata sheet, you can see a list of the known issues with different steppings.
But steppings does not have anything to do with the name change to NXP.