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M38B57MC Fiches technique(PDF) 38 Page - Mitsubishi Electric Semiconductor |
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M38B57MC Fiches technique(HTML) 38 Page - Mitsubishi Electric Semiconductor |
38 / 69 page MITSUBISHI MICROCOMPUTERS 38B5 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 38 PRELIMINAR Y Notice: This is not a final specification. Some parametric limits are subject to change. Fig. 41 Segment/Digit Setting Example FLD automatic display pins When the automatic display control bits of the FLDC mode register (address 0EF416) are set to “1,” the ports of P0, P1, P2, P3 and P8 are used as FLD automatic display pins. When using the FLD automatic display mode, set each port to the FLD pin or the general-purpose port using the respective switch reg- ister in accordance with the number of segments and the number of digits. This setting is performed by writing a value into the FLD/port switch register (addresses 0EF916 to 0EFB16) of each port. This setting can be performed in units of bit. When “0” is set, the port is set to the general-purpose port. When “1” is set, the port is set to the FLD pin. There is no restriction on whether the FLD pin is to be used as a segment pin or a digit pin. Table 7 Pins in FLD Automatic Display Mode Port Name Automatic Display Pins Setting Method P0, P2, FLD0–FLD15 The individual bits of the FLD/port switch register (addresses 0EF916–0EFB16) can be set each pin P80–P83 FLD32–FLD35 either FLD port (“1”) or general-purpose port (“0”). P1, P3 FLD16–FLD31 None (FLD only) P84–P87 FLD36–FLD39 The individual bits of the FLD/port switch register (address 0EFB16) can be set each pin to either FLD port (“1”) or general-purpose port (“0”). The output can be reversed by the port P8 FLD output control register (address 0EFC16). The port output format is the CMOS output format. When using the port as a display pin, a driver must be installed externally. 15 8 P24 P25 P26 P27 P20 P21 P22 P23 0 0 0 0 0 0 0 0 FLD16(DIG1) FLD17(DIG2) FLD18(DIG3) FLD19(DIG4) FLD20(SEG4) FLD21(SEG5) FLD22(SEG6) FLD23(SEG7) P04 P05 FLD14(SEG2) FLD15(SEG3) FLD8(SEG1) P01 P02 P03 1 0 0 0 0 0 1 1 FLD32(SEG12) FLD33(SEG13) FLD34(SEG14) FLD35(SEG15) P84 P85 P86 P87 FLD24(SEG8) FLD25(SEG9) FLD26(SEG10) FLD27(SEG11) FLD28(DIG5) FLD29(DIG6) FLD30(DIG7) FLD31(DIG8) 1 1 1 1 0 0 0 0 25 15 FLD8(SEG9) FLD9(SEG10) FLD10(SEG11) FLD11(SEG12) FLD12(SEG13) FLD13(SEG14) FLD14(SEG15) FLD15(SEG16) 1 1 1 1 1 1 1 1 FLD0(SEG1) FLD1(SEG2) FLD2(SEG3) FLD3(SEG4) FLD4(SEG5) FLD5(SEG6) FLD6(SEG7) FLD7(SEG8) FLD16(DIG1) FLD17(DIG2) FLD18(DIG3) FLD19(DIG4) FLD20(DIG5) FLD21(DIG6) FLD22(DIG7) FLD23(DIG8) 1 1 1 1 1 1 1 1 FLD24(DIG9) FLD25(DIG10) FLD26(DIG11) FLD27(DIG12) FLD28(DIG13) FLD29(DIG14) FLD30(DIG15) FLD31(SEG17) FLD32(SEG18) FLD33(SEG19) FLD34(SEG20) FLD35(SEG21) 1 1 1 1 1 1 1 1 FLD36(SEG22) FLD37(SEG23) FLD38(SEG24) FLD39(SEG25) 18 20 FLD8(DIG1) FLD9(DIG2) FLD10(DIG3) FLD11(DIG4) FLD12(DIG5) FLD13(DIG6) FLD14(DIG7) FLD15(DIG8) 1 1 1 1 1 1 FLD2(SEG1) FLD3(SEG2) FLD4(SEG3) FLD5(SEG4) FLD6(SEG5) FLD7(SEG6) FLD16(DIG9) FLD17(DIG10) FLD18(DIG11) FLD19(DIG12) FLD20(DIG13) FLD21(DIG14) FLD22(DIG15) FLD23(DIG16) 1 1 1 1 1 1 1 1 FLD24(DIG17) FLD25(DIG18) FLD26(DIG19) FLD27(DIG20) FLD28(SEG7) FLD29(SEG8) FLD32(SEG11) FLD33(SEG12) FLD34(SEG13) FLD35(SEG14) 1 1 1 1 1 1 1 1 FLD36(SEG15) FLD37(SEG16) FLD38(SEG17) FLD39(SEG18) 16 10 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 P20 P21 P22 P23 FLD4(SEG1) FLD5(SEG2) FLD6(SEG3) FLD7(SEG4) FLD8(SEG5) FLD9(SEG6) FLD10(SEG7) FLD11(SEG8) FLD12(SEG9) FLD13(SEG10) FLD14(SEG11) FLD15(SEG12) FLD16(DIG1) FLD17(DIG2) FLD18(DIG3) FLD19(DIG4) FLD20(DIG5) FLD21(DIG6) FLD22(DIG7) FLD23(DIG8) FLD24(DIG9) FLD25(DIG10) FLD26(SEG13) FLD27(SEG14) FLD28(SEG15) FLD29(SEG16) P81 P80 P82 P83 P84 P85 P86 P87 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 P20 P21 FLD30(SEG9) FLD31(SEG10) 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 P24 P25 Number of segments Number of digits Port P2 Setting example 1 Setting example 2 Setting example 3 Setting example 4 Port P0 Port P1 Port P3 Port P8 |
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Description similaire - M38B57MC |
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