COP8CCR9IMT7SLASHNOPB datasheet(71/111 Pages) TI1

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COP8CBR9, COP8CCR9, COP8CDR9

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SNOS535I – OCTOBER 2000 – REVISED MARCH 2013

4. Poll ADBSY until it is cleared by the hardware. This indicates the completion of the conversion.

5. Obtain the results from the result registers.

The port pins used for the multiplexor output must be configured as high impedance inputs. If the port pins

are configured as outputs, or as inputs with weak pull-up, there will be a conflict between the analog signal

output and the digitally driven output.

Figure 5-20. A/D with Single Ended Mux Output Feature Enabled

Figure 5-21. A/D with Differential Mux Output Feature Enabled

5.14.1.1.3 Mode Select

This 1-bit field is used to select the mode of operation (single ended or differential) as shown in the

following Table 5-21.

Table 5-21. A/D Conversion Mode Selection

ADMOD

Mode

Single Ended Mode

Differential Mode

5.14.1.1.4 Prescaler Select

This 1-bit field is used to select one of two prescaler clocks for the A/D Converter. The following Table 5-

22 shows the various prescaler options. Care must be taken, when selecting this bit, to keep the A/D clock

frequency within the specified range.

Table 5-22. A/D Converter Clock Prescale

PSC

Clock Select

MCLK Divide by 1

MCLK Divide by 16

Functional Description

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COP8CCR9IMT7/NOPB 데이터시트(PDF) 71 Page - Texas Instruments