PIC16F570 datasheet(86/129 Pages) MICROCHIP

86 / 129 page

PIC16F570

DS40001684E-page 86

 2013-2014 Microchip Technology Inc.

TABLE 15-2:

COMPARATOR SPECIFICATIONS

Comparator Specifications

Standard Operating Conditions (unless otherwise stated)

Operating temperature

-40°C to 125°C

Characteristics

Sym.

Min.

Typ.

Max.

Units

Comments

Input offset voltage

VOS

—

± 5.0

±10.0

Input common mode voltage*

VCM

0—

VDD – 1.5

CMRR*

CMRR

—

Response Time(1)*

TRT

—150

—

Comparator Mode Change to

Output Valid*

TMC2COV

——

s

These parameters are characterized but not tested.

Note 1: Response time measured with one comparator input at (VDD – 1.5)/2 while the other input transitions from

VSS to VDD – 1.5V.

TABLE 15-3:

COMPARATOR VOLTAGE REFERENCE (CVREF) SPECIFICATIONS

Sym.

Characteristics

Min.

Typ.

Max.

Units

Comments

CVRES

Resolution

—

VDD/24*

VDD/32

—

LSb

Low Range (VRR = 1)

High Range (VRR = 0)

Absolute Accuracy(2)

—

±1/2*

LSb

Low Range (VRR = 1)

High Range (VRR = 0)

Unit Resistor Value (R)

—

2K*

—



Settling Time(1)

——

10*

s

* These parameters are characterized but not tested.

Note 1:

Settling time measured while VRR = 1 and VR<3:0> transitions from 0000 to 1111.

Do not use reference externally when VDD < 2.7V. Under this condition, reference should only be used

with comparator Voltage Common mode observed.

TABLE 15-4:

FIXED INPUT REFERENCE SPECIFICATION

Input Reference Specifications

Standard Operating Conditions (unless otherwise stated)

Operating temperature

-40°C to 125°C

Characteristics

Sym.

Min.

Typ.

Max.

Units

Comments

Absolute Accuracy

VFIR

0.5

0.60

0.7

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