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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MICRF230 датащи(PDF) 13 Page - Micrel Semiconductor |
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MICRF230 датащи(HTML) 13 Page - Micrel Semiconductor |
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13 / 20 page  Micrel, Inc. MICRF230 configuration with MOS transconductor. Though the MICRF230 has built-in load capacitors for the crystal oscillator, the external load capacitors are still required for tuning it to the right frequency. RO1 and RO2 are external pins of the MICRF230 to connect the crystal to the reference oscillator. Figure 6. Reference Oscillator Circuit Table 3. Reference Frequency Examples RF Input Frequency (MHz) Reference Frequency (MHz) 418.0 13.02708 433.92 13.52313 (9) Note: 9. Empirically derived, slightly different from Equation 3. Squelch Operation Squelch operation can be used to limit the amount of activity on the DO pin during normal operation, which is particularly useful when interrupt generated on DO can interfere with correct operation. Table 4. Squelch Control SQ Pin Squelch Enable 0 Squelch Circuit Enabled 1 Squelch Circuit Disabled (default) The external pin defaults high via an internal pull-up. April 15, 2015 13 Revision 2.0 |
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