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MAXQ3210-EJX Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAXQ3210-EJX Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 28 page Microcontroller with Internal Voltage Regulator, Piezoelectric Horn Driver, and Comparator _____________________________________________________________________ 7 Pin Description (continued) PIN NAME FUNCTION 13 FEED Piezoelectric Horn Driver, Feedback. This input is connected to the feedback electrode of the horn. If FEED is not used, it should be grounded. 14 HORNB Piezoelectric Horn Driver, Horn Brass. This output pin is connected to the piezo metal support electrode of the horn. 15 GNDHORN Piezoelectric Horn Driver, Ground. This pin should be connected to GND, the same ground as pin 1. There is no special isolation required for this pin. 16 HORNS Piezoelectric Horn Driver, Horn Silver. This output pin is connected to the ceramic electrode and provides the complementary output to HORNB when the horn output is enabled. 17 VDD Digital Power. This pin should be connected to a bypass capacitor to ground. 18 REGOUT Voltage Regulator Output. This pin provides the regulated output of the internal voltage regulator. This pin requires sufficient bypass capacitance, preferrably a parallel combination of 10µF and 0.1µF capacitors between this pin and ground. 19 TMS/P1.2 Debug Port Signal TMS or General-Purpose, Digital I/O, Type D Port. This pin functions as either the TMS signal of the debug port or as a bidirectional I/O. The pin defaults to a digital input with a weak pullup after a reset. 20 RESET/P1.1 Active-Low Reset Input or General-Purpose, Digital I/O, Type D Port. This pin defaults to the reset input mode of operation following a POR. The reset input mode can be deactivated and the digital I/O mode enabled by programming the RSTD bit to 1. 21 TDI/P1.0 Debug Port Signal TDI or General-Purpose, Digital I/O, Type D Port. This pin functions as either the TDI signal of the debug port or as a bidirectional I/O. The pin defaults to a digital input with a weak pullup after a reset. 22 LED/P0.7 High-Current (Sink) Driver Output or General-Purpose, Digital I/O, Type D Port. This pin functions with a high-current pulldown to drive a device such as an LED or as a bidirectional I/O. The pin defaults to a digital input with a weak pullup after a reset. 23 INT/P0.6 External Edge-Selectable Interrupt or General-Purpose, Digital I/O, Type D Port. This pin functions as either an external edge-selectable interrupt or as a bidirectional I/O. The pin defaults to a digital input with a weak pullup after a reset. 24 CMPI/P0.5 Analog Voltage Comparator Input or General-Purpose, Digital I/O, Type D Port. This pin functions as either the input to the analog voltage comparator or as a bidirectional I/O. The pin defaults to a digital input with a weak pullup after a reset. |
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