Absolute Maximum Ratings

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

-50°Cto125°C

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

-25°Cto75°C

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 reliabil-

ity.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

¾¾

2.7

¾

5.2

V

Operating Current

3V

No load/LCD ON

On-chip RC oscillator

¾

150

250

mA

5V

¾

250

370

mA

Operating Current

3V

No load/LCD ON

Crystal oscillator

¾

135

200

5V

¾

200

300

mA

Operating Current

3V

No load/LCD OFF

On-chip RC oscillator

¾

15

30

mA

5V

¾

50

70

mA

Operating Current

3V

No load/LCD OFF

Crystal oscillator

¾

210

mA

5V

¾

310

mA

Standby Current

3V

No load, Power down mode

¾¾

1

mA

5V

¾¾

2

mA

Input Low Voltage

3V

DB0~DB3, WR,CS,RD

0

¾

0.6

V

5V

0

¾

1.0

V

Input High Voltage

3V

DB0~DB3, WR,CS,RD

2.4

¾

3V

5V

4.0

¾

5V

BZ, BZ, IRQ Sink Current

3V

1.2

2.5

¾

mA

5V

36

¾

mA

BZ, BZ Source Current

3V

-0.9

-1.8

¾

mA

5V

-2

-4

¾

mA

DB0~DB3 Sink Current

3V

1.2

2.5

¾

mA

5V

36

¾

mA

DB0~DB3 Source Current

3V

-0.9

-1.8

¾

mA

5V

-2

-4

¾

mA

LCD Common Sink Current

3V

80

160

¾mA

5V

180

360

¾mA

LCD Common Source Current

3V

-40

-80

¾mA

5V

-90

-180

¾mA

LCD Segment Sink Current

3V

50

100

¾mA

5V

120

240

¾mA

LCD Segment Source Current

3V

-30

-60

¾mA

5V

-70

-140

¾mA

Pull-high Resistor

3V

DB0~DB3, WR,CS,RD

150

250

410

k

W

5V

60

125

210

k

W

HT1647

Rev. 1.30

5

November 10, 2005