HT68F003 datasheet(13/119 Pages) HOLTEK

13 / 119 page

Rev. 1.41

April 11, 2017

Rev. 1.41

April 11, 2017

HT68F002/HT68F0025/HT68F003

Cost-Effective Flash MCU with EEPROM

HT68F002/HT68F0025/HT68F003

Cost-Effective Flash MCU with EEPROM

LVR&LVD Electrical Characteristics

Symbol

Parameter

Test Conditions

Min.

Typ.

Max. Unit

VDD

Conditions

VDD

Operating Voltage

—

1.9

—

5.5

VLVR

Low Voltage Reset Voltage

— LVR Enable, 2.1V option

-5%

2.1

+5%

VLVD

Low Voltage Detector Voltage

—

ENLVD = 1, VLVD = 2.0V

-5%

2.0

+5%

ENLVD = 1, VLVD = 2.2V

2.2

ENLVD = 1, VLVD = 2.4V

2.4

ENLVD = 1, VLVD = 2.7V

2.7

ENLVD = 1, VLVD = 3.0V

3.0

ENLVD = 1, VLVD = 3.3V

3.3

ENLVD = 1, VLVD = 3.6V

3.6

ENLVD = 1, VLVD = 4.0V

4.0

tLVR

Low Voltage Width to Reset

—

160

320

640

μs

tLVDS

LVDO stable time

— For LVR enable, LVD off→on

—

μs

— For LVR disable, LVD off→on

—

150

μs

Power on Reset Electrical Characteristics

Ta = 25°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

VPOR

VDD Start Voltage to Ensure Power-on Reset

—

100

RRPOR

VDD Rising Rate to Ensure Power-on Reset

—

0.035

—

V/ms

tPOR

Minimum Time for VDD Stays at VPOR to

Ensure Power-on Reset

—

Ti me

V DD

V PO R

RR PO R

t PO R

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