HT32F1253 datasheet(29/35 Pages) HOLTEK

29 / 35 page

Rev. 1.00

29 of 35

May 27, 2011

32-bit ARM Cortex™-M3 MCU

HT32F1251/51B/52/53

Operation Amplifier/Comparator Characteristics

Table 16. OPA/CMP Characteristics

TA = 25°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Operating voltage

2.7

3.3

3.6

IOPA/CMP

Typical operating current

—

230

—

IOPA/CMP_DN Power down supply current

Assign registers OPAEN = 0

and EN_OPAOP = 0

—

0.1

VIOS

Input offset voltage

VDDA = 3.3 V,

AnOF[5:0] = ‘100000’

-15

—

VDDA = 3.3 V, After calibration

-1

—

Voltage Gain

100

Unit-Gain Bandwidth

RL=100KΩ

1,3

MHz

RL=100KΩ, CL=100pF

1.24

VCM

Common mode voltage range VDDA = 3.3 V

VSSA

—

VDDA –

0.6

tRT

Comparator response time

VDDA = 3.3 V;

Input Overdrive = ±10mV

—

Slew Rate

VDDA = 3.3 V;

Output capacitor load

CL=100pF

1.6

V/us

NOTE: Guaranteed by design, not tested in production.

GPTM Characteristics

Table 17. GPTM Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fGPTM

Timer clock source

—

MHz

tRES

Timer resolution time

—

1/fGPTM

fEXT

External signal frequency on

channel 1 ~ 4

—

1/2

fGPTM

RES

Timer resolution

—

bits

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