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3819 Datasheet(PDF) 137 Page - Renesas Technology Corp |
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3819 Datasheet(HTML) 137 Page - Renesas Technology Corp |
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137 / 218 page  123 2. APPLICATION MITSUBISHI MICROCOMPUTER 3819 Group 2.5 FLD controller 3819 Group USER’S MANUAL Fig. 2.5.21 Setting of related registers (1) [FLD automatic display and Key-scan using digit pin] P0SDR 01 0 Port P0 segment/digit switch register (Address:3216) 1 0 00 Set ports P01 and P00 to segment (SEG 33, SEG32) Set ports P07–P02 to digit (DIG7–DIG2) 0 Set ports P23–P20 to output-only port P2DPR Port P2 digit/port switch register (Address:33 16) 0 0 0 0 Toff = 1/16!Tdisp = 15.27 µs 0 Tscan = 0 µs FLDM1 FLDC mode register 1 (Address:3616) 0 0 0 Dull the output waveform of the High-breakdown-voltage port 0 0 1 Stop displaying 1 Automatic display mode FLDM2 FLDC mode register 2 (Address:3716) 0 0 0 Tdisp = 244.39 µs 0 0 0 0 Set ports P11 and P10 to digit (DIG9, DIG8) Set the value of “the number of digits – 1” FLDDP FLD data pointer (Address:3816) 10 0 1 0 0 0 P8SPR 0 0 0 Port P8 segment/port switch register (Address:3416) 0 0 00 Set ports P87–P80 to I/O port 0 |
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