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<<O>> Difference Topic
UPD7004C
(r1.7 - 27 Jun 2005 - Home.1net)
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*note by 1net: Please take the above description with a grain of salt as it is NOT for 7004.
In upd7004, we have only 2 registers: 4000 and 4001. The upd7004 has only 10bit mode, but since the code only reads 4001, the resolution is effectively 8bit... the 2lsb are discarded and not read.
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- the external interrupt 1 routine jumpes to 006Ch, where it reads the value from 4001h (A/D low byte).
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- the external interrupt 1 routine jumpes to 0064h, where it reads the value from 4001h (A/D HIGH byte).
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| Channel 6 | CH4 | 3 | uPD7004C | 26 | CH3 | Channel 1 |
| Channel 7 | CH5 | 4 | uPD7004C | 25 | CH2 | Channel 0 |
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| Channel 6 | CH6 | 3 | uPD7004C | 26 | CH1 | Channel 1 |
| Channel 7 | CH7 | 4 | uPD7004C | 25 | CH0 | Channel 0 |
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