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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC24FV32KA302 датащи(PDF) 74 Page - Microchip Technology |
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PIC24FV32KA302 датащи(HTML) 74 Page - Microchip Technology |
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74 / 364 page  PIC24FV32KA304 FAMILY DS39995D-page 74 2011-2013 Microchip Technology Inc. 7.5.2 DETECTING BOR When BOR is enabled, the BOR bit (RCON<1>) is always reset to ‘1’ on any BOR or POR event. This makes it difficult to determine if a BOR event has occurred just by reading the state of BOR alone. A more reliable method is to simultaneously check the state of both POR and BOR. This assumes that the POR and BOR bits are reset to ‘0’ in the software immediately after any POR event. If the BOR bit is ‘1’ while POR is ‘0’, it can be reliably assumed that a BOR event has occurred. 7.5.3 DISABLING BOR IN SLEEP MODE When BOREN<1:0> = 10, BOR remains under hardware control and operates as previously described. However, whenever the device enters Sleep mode, BOR is automatically disabled. When the device returns to any other operating mode, BOR is automatically re-enabled. This mode allows for applications to recover from brown-out situations, while actively executing code when the device requires BOR protection the most. At the same time, it saves additional power in Sleep mode by eliminating the small incremental BOR current. Note: Even when the device exits from Deep Sleep mode, both the POR and BOR bits are set. Note: BOR levels differ depending on device type; PIC24FV32KA3XX devices are at different levels than those of PIC24F32KA3XX devices. See Section 29.0 “Electrical Characteristics” for BOR voltage levels. |
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