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In this mode, the ADT7476A can only read a single voltage
channel. The selected voltage input is read every 0.7 ms. The
appropriate ADC channel is selected by writing to Bits [7:5]
of the TACH1 minimum high byte register (0x55).
Table 12. PROGRAMMING SINGLE-CHANNEL
ADC MODE
Bits [7:4], Register 0x55
000
001
010
011
100
101
110
111
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ADT7476A
Channel Selected (Note 1)
2.5 V
V
CCP
V
CC
5.0 V
12 V
Remote 1 Temperature
Local Temperature
Remote 2 Temperature
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1. In the process of configuring single-channel ADC conversion
mode, the TACH1 minimum high byte is also changed, possibly
trading off TACH1 minimum high byte functionality with
single-channel mode functionality.
14
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