AMC7836_15 Datasheet, PDF (31/87 Pages) Texas Instruments – AMC7836 High-Density, 12-Bit Analog Monitor and Control Solution With Multichannel ADC, Bipolar DACs, Temperature Sensor, and GPIO Ports

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AMC7836
SLAS986B – NOVEMBER 2014 – REVISED FEBRUARY 2015
Start
(Reset)
ADC IDLE state
ADC-register
changes?
No
Yes _{ADC WAIT state}
(2 µs)
No
ADC trigger?
Yes
First conversion
Update registers Yes
and issue data
available indicator
Direct mode?
Yes
Is this the last
conversion?
No
No
Yes
ADC trigger?
Convert next
channel
No
Figure 52. ADC Conversion Sequence
Regardless of the selected conversion method, the following ADC registers should only be updated while the
ADC is in IDLE state:
• ADC configuration register (address 0x10)
• False alarm configuration register (address 0x11)
• ADC MUX configuration registers (address 0x13 through 0x15)
• Threshold registers (0x80 through 0x97)
• Hysteresis register (0xA0 through 0xA5)
NOTE
After updating any of the ADC registers listed above, a minimum 2 µs wait time should be
implemented before issuing an ADC trigger.
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