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18F8680 Datasheet(PDF) 272 Page - Microchip Technology |
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18F8680 Datasheet(HTML) 272 Page - Microchip Technology |
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272 / 496 page  PIC18F6585/8585/6680/8680 DS30491C-page 270 2004 Microchip Technology Inc. FIGURE 22-2: LOW-VOLTAGE DETECT (LVD) BLOCK DIAGRAM The LVD module has an additional feature that allows the user to supply the trip voltage to the module from an external source. This mode is enabled when bits LVDL3:LVDL0 are set to ‘1111’. In this state, the com- parator input is multiplexed from the external input pin, LVDIN (Figure 22-3). This gives users flexibility because it allows them to configure the Low-Voltage Detect interrupt to occur at any voltage in the valid operating range. FIGURE 22-3: LOW-VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM LVDIF VDD LVDEN LVDCON Internally Generated Reference Voltage LVDIN (Parameter #D423) LVD3:LVD0 Register LVD EN BGAP BODEN LVDEN VxEN LVDIN VDD VDD Externally Generated Trip Point LVD3:LVD0 LVDCON Register |
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