HT85F2270 datasheet(27/226 Pages) HOLTEK

27 / 226 page

Rev. 1.00

�7 of ��6

�a� 1�� 01�

Standard 8051 8-Bit Flash MCU

HT85F2260/HT85F2270/HT85F2280

12 Comparator Electrical Characteristics

Ta=��°C

Symbol

Parameter

Test Conditions

Min. Typ.

Max.

Unit

VDD

Conditions

—

Comparator operating voltage

—

�.�

—

�.�

—

Comparator operating current

�V

LVDCR=00h� ADCR1=08h� i.e. select

internal bandgap voltage output (x�)

as VREFI

—

μA

—

Comparator power-down current

�V Comparator disable

—

0.1

μA

VC�POS

Comparator input offset voltage

�V

—

-10

—

+10

VHP1

Positive H�steresis 1

�V CP(n)HP[1:0]=00b

—

VHP�

Positive H�steresis �

�V CP(n)HP[1:0]=01b

�

VHP�

Positive H�steresis �

�V CP(n)HP[1:0]=10b

1�

�0

VHP4

Positive H�steresis 4

�V CP(n)HP[1:0]=11b

1�

��

VHN1

Negative H�steresis 1

�V CP(n)HN[1:0]=00b

—

VHN�

Negative H�steresis �

�V CP(n)HN[1:0]=01b

�

VHN�

Negative H�steresis �

�V CP(n)HN[1:0]=10b

1�

�0

VHN4

Negative H�steresis 4

�V CP(n)HN[1:0]=11b

1�

��

VC�

Comparator common mode voltage range —

—

VSS

— VDD-1.4V

AOL

Comparator open loop gain

—

tPD

Comparator response time

�V

With 100mV overdrive

—

μs

�V

Note: �easured with comparator one input pin at VC�=(VDD-1.4)/� while the other pin input transition from VSS to

(VC� +100mV) or from VDD to (VC� -100mV).

HT85F2270 Datasheet(PDF) 27 Page - Holtek Semiconductor Inc

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