Z8F082ASH020SC datasheet(141/244 Pages) ZILOG

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PS024705-0405

P R E L I M I N A R Y

Comparator

Z8 Encore! XP® F08xA Series

Product Specification

123

Comparator Control Register Definitions

Comparator Control Register

The Comparator Control Register (CMPCTL) configures the comparator inputs and sets

the value of the internal voltage reference.

INPSEL—Signal Select for Positive Input

0 = GPIO pin used as positive comparator input

1 = temperature sensor used as positive comparator input

INNSEL—Signal Select for Negative Input

0 = internal reference disabled, GPIO pin used as negative comparator input

1 = internal reference enabled as negative comparator input

REFLVL—Internal Reference Voltage Level (note that this reference is independent of the

ADC voltage reference)

0000 = 0.0 V

0001 = 0.2 V

0010 = 0.4 V

0011 = 0.6 V

0100 = 0.8 V

0101 = 1.0 V (Default)

0110 = 1.2 V

0111 = 1.4 V

1000 = 1.6 V

1001 = 1.8 V

1010–1111 = Reserved

Table 76. Comparator Control Register (CMP0)

BITS

FIELD

INPSEL

INNSEL

REFLVL

Reserved

RESET

001

R/W

R/WR/W

ADDR

F90H

Z8F082ASH020SC Datasheet(PDF) 141 Page - Zilog, Inc.

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