Z8F012A View Datasheet(PDF) - Zilog

Part Name

Description

Manufacturer

Z8F012A

High-Performance 8-Bit Microcontrollers Z8 Encore! XP® F082A Series

Zilog 

Z8 Encore! XP® F082A Series

Product Specification

141

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

di

ld cmp0, r0 ; load some new configuration

nop

nop

; wait for output to settle

clr irq0 ; clear any spurious interrupts pending

ei

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

7

6

5

Field

INPSEL INNSEL

RESET

0

0

0

R/W

R/W

R/W

R/W

Address

4

3

REFLVL

1

0

R/W

R/W

F90H

2

1

0

Reserved (20-/28-pin)

REFLVL (8-pin)

1

0

0

R/W

R/W

R/W

Bit

[7]

INPSEL

[6]

INNSEL

Description

Signal Select for Positive Input

0 = GPIO pin used as positive comparator input.

1 = Temperature sensor used as positive comparator input.

Signal Select for Negative Input

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

1 = Internal reference enabled as negative comparator input.

PS022827-1212

P R E L I M I N A R Y Comparator Control Register Definition

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