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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC312XDP512F0MPVR датащи(PDF) 176 Page - Freescale Semiconductor, Inc |
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SC312XDP512F0MPVR датащи(HTML) 176 Page - Freescale Semiconductor, Inc |
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176 / 1348 page  Chapter 5 Analog-to-Digital Converter (S12ATD10B8CV2) MC9S12XDP512 Data Sheet, Rev. 2.21 176 Freescale Semiconductor 5.3.2.8 Reserved Register (ATDTEST0) Read: Anytime, returns unpredictable values Write: Anytime in special modes, unimplemented in normal modes NOTE Writing to this register when in special modes can alter functionality. 5.3.2.9 ATD Test Register 1 (ATDTEST1) This register contains the SC bit used to enable special channel conversions. Read: Anytime, returns unpredictable values for Bit7 and Bit6 Write: Anytime 76543210 R UUUUUUUU W Reset 10000000 = Unimplemented or Reserved Figure 5-10. Reserved Register (ATDTEST0) 76543210 R U U 0 0000 SC W Reset 00000000 = Unimplemented or Reserved Figure 5-11. ATD Test Register 1 (ATDTEST1) Table 5-18. ATDTEST1 Field Descriptions Field Description 0 SC Special Channel Conversion Bit — If this bit is set, then special channel conversion can be selected using CC, CB and CA of ATDCTL5. Table 5-19 lists the coding. 0 Special channel conversions disabled 1 Special channel conversions enabled Note: Always write remaining bits of ATDTEST1 (Bit7 to Bit1) zero when writing SC bit. Not doing so might result in unpredictable ATD behavior. Table 5-19. Special Channel Select Coding SC CC CB CA Analog Input Channel 1 0 X X Reserved 11 0 0 VRH 11 0 1 VRL 11 1 0 (VRH+VRL) / 2 1 1 1 1 Reserved |
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