• Full upward compatibility with SAB 80C517A/83C517A-5

• Up to 24 MHz external operating frequency

– 500 ns instruction cycle at 24 MHz operation

• Superset of the 8051 architecture with 8 datapointers

• On-chip emulation support logic (Enhanced Hooks Technology™)

• 32K byte on-chip ROM (with optional ROM protection)

– alternatively up to 64K byte external program memory

• Up to 64K byte external data memory

• 256 byte on-chip RAM

• Additional 2K byte on-chip RAM (XRAM)

• Seven 8-bit parallel I/O ports

• Two input ports for analog/digital input