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7906 Datasheet(PDF) 332 Page - Renesas Technology Corp |
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7906 Datasheet(HTML) 332 Page - Renesas Technology Corp |
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332 / 531 page ![]() D-A CONVERTER 7906 Group User’s Manual Rev.2.0 13-5 13.4 Setting method Figure 13.4.1 shows an initial setting example of registers related to the D-A converter. Fig. 13.4.1 Initial setting example of registers related to D-A converter 13.5 Operation description When any of the D-Ai output enable bits is set to “1,” the value loaded in D-A register i is converted to an analog voltage, and the analog voltage is output from pin DAi. The relationship between analog output voltage V and value n, which has been loaded in D-A register i, can be expressed as follows : V = VREF ✕ (n = 0 to 255) VREF : Reference voltage 13.4 Setting method, 13.5 Operation description Analog voltage output started Setting of the D-Ai output enable bit to “1”. b7 b0 D-A control register (Address 9616) D-A0 output enable bit D-A1 output enable bit Setting of a value to D-A register i b7 b0 D-A register 0 (Address 9816) D-A register 1 (Address 9916) A value (0016 to FF16) to be D-A converted is set. n 256 |
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