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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M32C/8A датащи(PDF) 290 Page - Renesas Technology Corp |
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M32C/8A датащи(HTML) 290 Page - Renesas Technology Corp |
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290 / 372 page  M32C/8A Group 19. D/A Converter Rev.1.00 Jul 15, 2007 Page 273 of 352 REJ09B0385-0100 Figure 19.2 DACON Register, DA0 and DA1 Registers Figure 19.3 D/A Converter Equivalent Circuit D/A Control Register Symbol DACON Address 039Ch Bit Symbol RW DA0E After Reset XXXX XX00b DA1E − (b7-b2) RW RW b7 b6 b5 b4 b1 b2 b3 b0 Bit Name Unimplemented. Write 0. Read as undefined value. Function 0: Output disabled 1: Output enabled D/A0 output enable bit D/A1 output enable bit − Symbol DA0, DA1 Address 0398h, 039Ah After Reset Undefined D/A Register i (i = 0,1) b7 b0 Function RW RW Output value of D/A conversion Setting Range 00h to FFh 0: Output disabled 1: Output enabled DA0 r 2R NOTES: 1. The above applies when the DA0 register is set to 2Ah. 2. D/A1 has the same circuitry as the avove. 3. When the D/A converter is not used, set the DAiE bit (i = 0,1) in the DACON register to 0 (output disabled) and the DAi register to 00h to stop current from flowing into the R-2R resistor to reduce unnecessary power consumption. 4. VREF remains connected even if the VCUT bit in the AD0CON1 register is set to 0 (VREF not connected). R R R R R RR 0 DA0E 1 2R 2R 2R 2R 2R 2R 2R 2R LSB 0 1 MSB AVSS VREF(4) Set in the DA0 register |
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