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UPD168110 Datasheet(PDF) 10 Page - NEC |
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UPD168110 Datasheet(HTML) 10 Page - NEC |
10 / 18 page Data Sheet S15840EJ2V0DS 10 µPD168110 Reset function When RESET = “L”, initialization is executed and the output goes into a Hi-Z state. When RESET = “H”, excitation is started with the current of ch1 at +100% and the current of ch2 at 0% (one-phase excitation position). To perform two-phase excitation driving, excitation is started with the currents of ch1 and ch2 at +100% after the mode has been set. Be sure to execute a reset operation after power application. MOB outputs “L” until the pulse is output when RESET goes “L”. Output enable (OE) pin The pulse output can be forcibly stopped from an external source by using the OE pin. When OE = “L”, the output is forcibly made to go into a Hi-Z state. Standby function The µPD168110 can enter the standby mode when the pulse is not output and when PS = “H” and STOP = “H”. In the standby mode, as many internal circuits as possible are stopped so that the self current consumption can be reduced. In the standby mode, the current consumption is 1 µA MAX. when external CLK input is stopped. While CLK is being input, the current consumption is reduced to 300 µA MAX. by the current flowing into the input buffer. The standby mode is released when PS = “L” and STOP = “L”. Under voltage lockout circuit (UVLO) This function is used to forcibly stop the operation of the IC to prevent malfunction of the circuits if VDD of the IC drops during operation. Note that if the VDD voltage abruptly drops in the order of µs, this function may not operate. VM pin current shutdown circuit A circuit that prevents a current from flowing into the VM pin when VDD = 0 V is provided. Therefore, the current flowing into the VM pin is cut off when VDD = 0 V. A current of up to 3 µA flows into the VM pin when VDD is applied so that the voltages on the VDD and VM pins can be monitored. |
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Similar Description - UPD168110 |
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