DESCRIPTION
The OM5202 8-Bit ROMless Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The OM5202 has the same instruction set as the 80C51.

FEATURES
• 80C51 central processing unit
• no internal ROM, externally up to 64k bytes
• 256 × 8 RAM, expandable externally to 64k bytes
• Two standard 16-bit timer/counters
• Four 8-bit I/O ports
• Two open drain I/O’s (P1.6, P1.7)
• Full-duplex UART facilities
• Power control modes
    – Idle mode
    – Power-down mode
• Operating frequency range: 1.2 to 16 MHz
• Operating ambient temperature range: 0 to +70°C