DESCRIPTION

The DS1077L is a dual-output, programmable, fixed-frequency oscillator requiring no external components for operation. The DS1077L can be used as a processor-controlled frequency synthesizer or as a stand-alone oscillator. The two synchronous output operating frequencies are user-adjustable in submultiples of the master frequency through the use of two on-chip programmable prescalers and dividers. The specific output frequencies chosen are stored in nonvolatile (EEPROM) memory. The DS1077L defaults to these values upon power-up.

FEATURES

◾ Processor-controlled or stand-alone solidstate oscillator

◾ Frequency changes on the fly

◾ Dual, low-jitter, synchronous fixedfrequency outputs

◾ 2-wire serial interface

◾ Frequency outputs 4.87kHz to 66.666MHz ±1.25 variation over temperature and voltage

◾ ±0.5 initial tolerance

◾ Nonvolatile frequency settings

◾ Single 2.7V to 3.6V supply

◾ No external components

◾ Power-down mode

◾ Synchronous output gating