INTRODUCTION

The UT69RH051 is a radiation-tolerant 8-bit microcontroller that is pin equivalent to the MCS-51 industry standard microcontroller when in a 40-pin DIP. The UT69RH051’s static design allows operation from 1Hz to 20MHz. This data sheet describes hardware and software interfaces to the UT69RH051.

FEATURES

? Three 16-bit timer/counters

- High speed output

- Compare/capture

- Pulse width modulator

- Watchdog timer capabilities

? 256 bytes of on-chip data RAM

? 32 programmable I/O lines

? 7 interrupt sources

? Programmable serial channel with:

- Framing error detection

- Automatic address recognition

? TTL and CMOS compatible logic levels

? 64K external data and program memory space

? MCS-51 fully compatible instruction set

? Flexible clock operation

- 1Hz to 20MHz with external clock

- 2MHz to 20MHz using internal oscillator with external crystal

? Radiation-hardened process and design; total dose irradiation testing MIL-STD-883 Method 1019

- Total dose: 1.0E6 rads(Si)

- Latchup immune

? Packaging options:

- 40-pin 100-mil center DIP (0.600 x 2.00)

- 44-lead 25-mil center Flatpack (0.670 x 0.800)

? Standard Microcircuit Drawing 5962-95638 available

- QML Q & V compliant