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TCM810ZENB713 Datasheet(PDF) 6 Page - Microchip Technology |
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TCM810ZENB713 Datasheet(HTML) 6 Page - Microchip Technology |
6 / 14 page TCM809/TCM810 DS21661C-page 6 2004 Microchip Technology Inc. 3.3 Controllers and Processors With Bidirectional I/O Pins Some microcontrollers have bidirectional reset pins. Depending on the current drive capability of the control- ler pin, an indeterminate logic level may result if there is a logic conflict. This can be avoided by adding a 4.7 k Ω resistor in series with the output of the TCM809/ TCM810 (Figure 3-3). If there are other components in the system that require a reset signal, they should be buffered so as not to load the reset line. If the other components are required to follow the reset I/O of the microcontroller, the buffer should be connected as shown with the solid line. FIGURE 3-3: Interfacing the TCM809 to a Bidirectional RESET I/O. TCM809 V DD RESET GND RESET GND Buffered RESET To Other System Components Micro- 4.7 k Ω controller Buffer PICmicro® |
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