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TC9400 Datasheet(PDF) 8 Page - Microchip Technology |
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TC9400 Datasheet(HTML) 8 Page - Microchip Technology |
8 / 24 page TC9400/9401/9402 DS21483C-page 8 © 2006 Microchip Technology Inc. 3.2 Voltage-to-Time Measurements The TC9400 output can be measured in the time domain as well as the frequency domain. Some micro- computers, for example, have extensive timing capabil- ity, but limited counter capability. Also, the response time of a time domain measurement is only the period between two output pulses, while the frequency mea- surement must accumulate pulses during the entire counter time-base period. Time measurements can be made from either the TC9400’s PULSE FREQ OUT output, or from the FREQ/2 OUT output. The FREQ/2 OUT output changes state on the rising edge of PULSE FREQ OUT, so FREQ/2 OUT is a symmetrical square wave at one-half the pulse output frequency. Timing measure- ments can, therefore, be made between successive PULSE FREQ OUT pulses, or while FREQ/2 OUT is high (or low). |
Número de pieza similar - TC9400_06 |
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Descripción similar - TC9400_06 |
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