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OM5202 - ROMless 8-bit microcontroller

OM5202 Description

Philips Semiconductors Product specification ROMless 8-bit microcontroller OM5202 .
The OM5202 8-Bit ROMless Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family.

OM5202 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

OM5202 Applications

* for general control systems. The OM5202 contains no read-only program memory, a volatile 256 × 8 read/write data memory, four 8-bit I/O ports, two 16-bit timer/event counters (identical to the timers of the 80C51), a multi-source, two-priority-level, nested interrupt structure, UART and on-chip osci

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