8-Bit CMOS Microcontroller

• Fully compatible to standard 8051 microcontroller • Up to 40 MHz operating frequency • 16 K×8 ROM (C504-2R only, optional ROM protection) • 256×8 RAM • 256×8 XRAM • Four 8-bit ports, (2 ports with mixed analog/digital I/O capability) • Three 16-bit timers/counters (timer 2 with

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