ZUSBOPTSC01ZACG datasheet(158/282 Pages) ZILOG

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PS022827-1212

P R E L I M I N A R Y

Comparator Control Register Definition

Z8 Encore! XP® F082A Series

Product Specification

141

The following code example illustrates how to safely enable the comparator:

ld cmp0, r0 ; load some new configuration

nop

; wait for output to settle

clr irq0 ; clear any spurious interrupts pending

Comparator Control Register Definition

The Comparator Control Register (CMP0) configures the comparator inputs and sets the

value of the internal voltage reference.

Table 77. Comparator Control Register (CMP0)

Bit

Field

INPSEL

INNSEL

REFLVL

Reserved (20-/28-pin)

REFLVL (8-pin)

RESET

00010100

R/W

R/WR/W

R/WR/WR/WR/WR/WR/W

Address

F90H

Bit

Description

[7]



INPSEL

Signal Select for Positive Input

0 = GPIO pin used as positive comparator input.

1 = Temperature sensor used as positive comparator input.

[6]



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.

ZUSBOPTSC01ZACG 数据表(PDF) 158 Page - Zilog, Inc.

ZUSBOPTSC01ZACG 数据表(HTML) 158 Page - Zilog, Inc.

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