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UPD17P136ACT Datasheet(PDF) 152 Page - NEC |
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UPD17P136ACT Datasheet(HTML) 152 Page - NEC |
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152 / 292 page  CHAPTER 13 PERIPHERAL HARDWARE 133 13.3.4 Reading Values from the 8-bit Data Register (ADCR) A value is read from the 8-bit data register (ADCR) via the data buffer (DBF) using the GET instruction. The 8-bit data register (ADCR) of the A/D converter has peripheral address 04H and only its low-order 8 bits (DBF1, DBF0) are valid. Execution of the GET instruction does not affect the high-order 8 bits of DBF. Figure 13-16. Reading Values from the 8-bit Data Register (ADCR) The result from 8-bit A/D conversion is E2H. GET DBF, ADCR ; Example of using reserved words DBF and ADCR DBF3 DBF2 DBF1 DBF0 11100010 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 Retained Retained 11100010 b7 b6 b5 b4 b3 b2 b1 b0 GET DBF, ADCR Data buffer 8-bit data ADCR (Peripheral address 04H) |
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