The Signetics 8051 family of products is based on the industry standard for 8-bit high performance microcontrollers. The architecture for the family has been optimized for sequential real-time control applications. The 8051 family of products are used in a wide range of applications from those that are relatively simple to applications in medical instrumentation and automobile control systems. All of the devices included in the family are available in versions that have either internal ROM, EPROM, or CPU only. With the exception of the 83C751 and 752 (which are limited to on-board memory) all of the devices in the family can address up to 64k bytes of both program and data memory.