With 32 I/Os, it's pretty good. The IC chip fits into the MICROCONTROLLER uPs/uCs/Peripheral ICs category. There are 44 terminations on the IC chip. 8-bits are the size of the data that comes with MCU. A 5V volt supply is provided by the Microcontroller chip. In addition to that, MCU chip has NO DMA channels. There are a total of NO channels in the device. The clock frequency is 12MHz. As an example, there is a feature called BOOLEAN PROCESSOR; ON-CIRCUIT EMULATION to name only a few.
TN87C51FA Features
TN87C51FA Applications
There are a lot of Rochester Electronics TN87C51FA Microcontroller applications.