Z8F021ASH020SC datasheet(144/276 Pages) ZILOG

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PS022815-0206

Analog-to-Digital Converter

Z8 Encore! XP® 4K Series

Product Specification

125

ANAIN[3:0]—Analog Input Select

These bits select the analog input for conversion. Not all Port pins in this list are available

in all packages for the Z8 Encore! XP® 4K Series. Refer to the chapter Pin Description on

page 7 for information regarding the Port pins available with each package style. Do not

enable unavailable analog inputs. Usage of these bits changes depending on the buffer

mode selected in ADC Control/Status Register 1.

For the reserved values, all input switches are disabled to avoid leakage or other undesir-

able operation. ADC samples taken with reserved bit settings are undefined.

SINGLE-ENDED:

0000 = ANA0 (transimpedance amp output when enabled)

0001 = ANA1 (transimpedance amp inverting input)

0010 = ANA2 (transimpedance amp non-inverting input)

0011 = ANA3

0100 = ANA4

0101 = ANA5

0110 = ANA6

0111 = ANA7

1000 = Reserved

1001 = Reserved

1010 = Reserved

1011 = Reserved

1100 = Hold transimpedance input nodes (ANA1 and ANA2) to ground.

1101 = Reserved

1110 = Temperature Sensor.

1111 = Reserved.

DIFFERENTIAL (non-inverting input and inverting input respectively):

0000 = ANA0 and ANA1

0001 = ANA2 and ANA3

0010 = ANA4 and ANA5

0011 = ANA1 and ANA0

0100 = ANA3 and ANA2

0101 = ANA5 and ANA4

0110 = ANA6 and ANA5

0111 = ANA0 and ANA2

1000 = ANA0 and ANA3

1001 = ANA0 and ANA4

1010 = ANA0 and ANA5

1011 = Reserved

1100 = Reserved

1101 = Reserved

1110 = Reserved

1111 = Manual Offset Calibration Mode

Z8F021ASH020SC 数据表(PDF) 144 Page - Zilog, Inc.

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