HT45F3820 datasheet(13/121 Pages) HOLTEK

13 / 121 page

Rev. 1.11

April 11, 2017

Rev. 1.11

April 11, 2017

HT45F3820

Ultrasonic Atomizer Flash MCU

HT45F3820

Ultrasonic Atomizer Flash MCU

LVD & LVR Electrical Characteristics

Ta=25°C

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

VDD

Conditions

VLVR

Low Voltage Reset Voltage

—

LVR enable, 2.1V

-5%

2.1

+5%

LVR enable, 2.55V

2.55

LVR enable, 3.15V

3.15

LVR enable, 3.8V

3.8

VLVD

Low Voltage Detector Voltage

—

LVDEN=1, VLVD=2.0V

-5%

2.0

+5%

—

LVDEN=1, VLVD=2.2V

2.2

—

LVDEN=1, VLVD=2.4V

2.4

—

LVDEN=1, VLVD=2.7V

2.7

—

LVDEN=1, VLVD=3.0V

3.0

—

LVDEN=1, VLVD=3.3V

3.3

—

LVDEN=1, VLVD=3.6V

3.6

—

LVDEN=1, VLVD=4.0V

4.0

ILVR

Additional PowerConsumption

if LVR is used

5V±3% LVR disable → LVR enable

—

μA

ILVD

Additional PowerConsumption

if LVD is used

5V±3%

LVD disable → LVD enable

(LVR disable)

—

115

μA

LVD disable → LVD enable

(LVR enable)

—

μA

tLVR

LVR Minimum Low Voltage

Width to Reset

—

120

240

480

μs

tLVD

LVD Minimum Low Voltage

Width to Interrupt

—

120

240

μs

tLVDS

LVDO Stable Time

—

For LVR enable, LVD off → on

—

μs

—

For LVR disable, LVD off → on

—

150

μs

tSRESET

Software Reset Width to Reset

—

120

μs

Note:VLVRorVLVDistheMCUoperatingvoltagelevelunderwhichaLVRresetorLVDinterruptoccurs.

HT45F3820 Datasheet(PDF) 13 Page - Holtek Semiconductor Inc

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