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SH7101 Datasheet(PDF) 367 Page - Renesas Technology Corp |
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SH7101 Datasheet(HTML) 367 Page - Renesas Technology Corp |
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367 / 560 page  Section 11 A/D Converter Rev.1.00 Sep. 18, 2008 Page 333 of 522 REJ09B0069-0100 11.3.1 A/D Data Registers 0 to 19 (ADDR0 to ADDR19) ADDRs are 16-bit read-only registers. The conversion result for each analog input channel is stored in ADDR with the corresponding number. (For example, the conversion result of AN4 is stored in ADDR4.) The converted 10-bit data is stored in bits 6 to 15. The lower 6 bits are always read as 0. The data bus between the CPU and the A/D converter is 8 bits wide. The upper byte can be read directly from the CPU, however the lower byte should be read via a temporary register. The temporary register contents are transferred from the ADDR when the upper byte data is read. When reading the ADDR, read the upper byte before the lower byte, or read in word unit. The initial value of ADDR is H'0000. |
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