 80C52-compatible:
 8051 pin- and instruction set-compatible
Four 8-bit I/O ports
Three 16-bit timer/counters
256 bytes scratchpad RAM
16kB On-Chip Program Memory
High-speed architecture:
4 clocks/machine cycle (compared to 8051 = 12)
DC to 33MHz (DS80C320)
Single-cycle instruction in 121ns
Dual data pointer
Optional variable length MOVX to access fast/slow RAM /peripherals
High-level integration:
Power-fail reset
Programmable watchdog timer
Early-warning power-fail interrupt
Two full-duplex hardware serial ports
13 total interrupt sources with six external |
