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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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ES51911 Folha de dados(PDF) 11 Page - Cyrustek corporation |
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ES51911 Folha de dados(HTML) 11 Page - Cyrustek corporation |
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11 / 29 page  v1.2 11/09/06 11 1.7 Frequency counter The time base of the frequency counter is derived from an external crystal oscillator by Tcounter = 4,000,000 Fosc where Fosc is the frequency of the crystal oscillator. Thus, the counter has a 1-second time base when a 4MHz oscillator is used. The frequency counter can select the proper range automatically or manually. Auto-range operation extends over six decades, from 1111Hz to 110.00MHz. The following table summarizes the full-scale range of the frequency counter. Range Full Scale FR112 11.1 – 111.1Hz FR12 112 – 1111Hz FR2 11.000KHz FR3 110.00KHz FR4 1.1000MHz FR5 11.000MHz FR6 110.00MHz NOTE: 1In the range of FR1, if input frequency is less than 11.1Hz, ES51911 will show 0.0Hz. 2When the reading is more than 111.1Hz, the resolution becomes 1Hz. 1.8 Temperature measurement mode Temperature measurement mode takes input signal from ADP pin and reference voltage from (VA+ - VA-). ES51911 has a built-in ℃-to-℉ scale translation circuit, and only needs an external ℃ scale application circuit. The application circuit for ℉ scale is not required. In temperature measurement mode, the default range is 1100.0 ℃ or ℉. VBAR pin is used to control the second decimal point (DP2) on the LCD panel. When VBAR is LOW, DP2 is turned on and the first decimal point (DP1) is turned off. |
Nº de peça semelhante - ES51911_11 |
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Descrição semelhante - ES51911_11 |
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