ADC 10 User Manual download pdf (Page 14)

ADC10 Operation

27-14 ADC10

Using the MSC Bit

To configure the converter to perform successive conversions automatically

and as quickly as possible, a multiple sample and convert function is available.

When MSC = 1 and CONSEQx > 0 the first rising edge of the SHI signal

triggers the first conversion. Successive conversions are triggered

automatically as soon as the prior conversion is completed. Additional rising

edges on SHI are ignored until the sequence is completed in the

single-sequence mode or until the ENC bit is toggled in repeat-single-channel,

or repeated-sequence modes. The function of the ENC bit is unchanged when

using the MSC bit.

Stopping Conversions

Stopping ADC10 activity depends on the mode of operation. The

recommended ways to stop an active conversion or conversion sequence are:

- Resetting ENC in single-channel single-conversion mode stops a

conversion immediately and the results are unpredictable. For correct

results, poll the ADC10BUSY bit until reset before clearing ENC.

- Resetting ENC during repeat-single-channel operation stops the

converter at the end of the current conversion.

- Resetting ENC during a sequence or repeat sequence mode stops the

converter at the end of the sequence.

- Any conversion mode may be stopped immediately by setting the

CONSEQx=0 and resetting the ENC bit. Conversion data is unreliable.

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ADC 10 User Manual Page 14