I didnt understand the IDENTIFY meaning. whether u want microcontroller with 28-pins or something else.
If u r searching for 28-pin microcontrollers then in PIC, PIC16F873A, PIC16F876A are 28-pin microcontroller. These controller have 3-ports A, B and C. port-A is 6-bit, B and C are 8-bit. Port-A can be worked as analog or digital port.
In AVR microcontroller ATmega8 and ATmega16 are 28-pin microcontroller with about 3 parallel port - with analog channels.
Hope this helps you.