Absolute Maximum Ratings

Storage Temperature ............................

Operating Temperature...........................

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed

in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

¾¾

2.4

¾

5.2

V

Operating Current

3V

No load/LCD ON

On-chip RC oscillator

¾

150

300

mA

5V

¾

300

600

mA

Operating Current

3V

No load/LCD ON

Crystal oscillator

¾

60

120

mA

5V

¾

120

240

mA

Operating Current

3V

No load/LCD ON

External clock source

¾

100

200

mA

5V

¾

200

400

mA

Standby Current

3V

No load, Power down mode

¾

0.1

5

mA

5V

¾

0.3

10

mA

Input Low Voltage

3V

DATA, WR,CS,RD

0

¾

0.6

V

5V

0

¾

1.0

V

Input High Voltage

3V

DATA, WR,CS,RD

2.4

¾

3.0

V

5V

4.0

¾

5.0

V

DATA, BZ, BZ, IRQ

3V

0.5

1.2

¾

mA

5V

1.3

2.6

¾

mA

DATA, BZ, BZ

3V

-0.4

-0.8

¾

mA

5V

-0.9

-1.8

¾

mA

LCD Common Sink Current

3V

80

150

¾mA

5V

150

250

¾mA

LCD Common Source Current

3V

-80

-120

¾mA

5V

-120

-200

¾mA

LCD Segment Sink Current

3V

60

120

¾mA

5V

120

200

¾mA

LCD Segment Source Current

3V

-40

-70

¾mA

5V

-70

-100

¾mA

Pull-high Resistor

3V

DATA, WR,CS,RD

60

120

200

k

W

5V

30

60

100

k

W

HT1621/HT1621G

Rev. 2.90

5

November 9, 2010

PATENTED