Just come across the Philips ARM based MCU page and I notice that there is a 28-pin LPC2220. This is something new. It turns out that this is an error by Philips. http://www.semiconductors.philips.com/products/microcontrollers/32bit/index.html I believe they are many more such errors... Regards, Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist