D.C. Characteristics

Ta=25

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

—

—

1.2

1.5

1.8

V

Operating Current

1.5V

No load,

—20

—

Standby Current

1.5V

No load,

HALT mode

——

1

Input Low Voltage

1.5V

—

0

—

0.4

V

Input High Voltage

1.5V

—

1.0

—

1.5

V

Port A, BZ & BZ Output Sink

Current

1.5V

95

100

—

Port A, BZ & BZ Output

Source Current

1.5V

600

700

—

Segment Output Sink

Current

100

150

—

Segment Output Source

Current

–20

–40

—

Pull–high Resistance

1.5V PS, PP, RES

30

—

300

k

Ω

A.C. Characteristics

Ta=25

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

System Clock

1.5V R:36k

38

—

400

kHz

LCD Clock

1.5V

—

—

128*

—

Hz

LCD Common Period

—

1/3 duty

—

s

Cycle Time

—

—

16

—

Reset Pulse Width

—

—

5

—

—

ms

Sound Effect Clock

—

—

—

64 or 128

**

—

kHz

voltage.

** Only these two clocking signal frequencies are supported by the Holtek sound library.

HTG1390

Preliminary

6

17th Nov ’98