NXP Semiconductors freescale K51 Series Reference Manual

CMPx_CR1 field descriptions (continued)Field DescriptionRefer to the device data sheet's CMP electrical specifications table for details on the impact of the modesbelow.0 Low Speed (LS) comparison mode selected. In this mode, CMP has slower output propagation delayand lower current consumption.1 High Speed (HS) comparison mode selected. In this mode, CMP has faster output propagation delayand higher current consumption.3INVComparator INVERTThis bit allows you to select the polarity of the analog comparator function. It is also driven to the COUToutput (on both the device pin and as SCR[COUT]) when CR1[OPE]=0.0 Does not invert the comparator output.1 Inverts the comparator output.2COSComparator Output Select0 Set CMPO to equal COUT (filtered comparator output).1 Set CMPO to equal COUTA (unfiltered comparator output).1OPEComparator Output Pin Enable0 The comparator output (CMPO) is not available on the associated CMPO output pin.1 The comparator output (CMPO) is available on the associated CMPO output pin.0ENComparator Module EnableThe EN bit enables the Analog Comparator Module. When the module is not enabled, it remains in the offstate, and consumes no power. When you select the same input from analog mux to the positive andnegative port, the comparator is disabled automatically.NOTE: This bit must be set in the same time with or after the mux enables (MUXCR[PEN] andMUXCR[MEM] are set) and should be neglected in the same time or before the mux enables.0 Analog Comparator disabled.1 Analog Comparator enabled.32.7.3 CMP Filter Period Register (CMPx_FPR)Addresses: CMP0_FPR is 4007_3000h base + 2h offset = 4007_3002hCMP1_FPR is 4007_3008h base + 2h offset = 4007_300AhCMP2_FPR is 4007_3010h base + 2h offset = 4007_3012hBit 7 6 5 4 3 2 1 0ReadFILT_PERWriteReset 0 0 0 0 0 0 0 0Chapter 32 Comparator (CMP)K51 Sub-Family Reference Manual, Rev. 6, Nov 2011Freescale Semiconductor, Inc. 767