HI-SINCERITY

MICROELECTRONICS CORP.

Spec. No. : HA200220

Issued Date : 1998.04.08

Revised Date : 2002.12.20

Page No. : 2/4

H66T19XA, H66T32XA, H66T68XA

HSMC Product Specification

Comment

Stress above those listed as "Absolute Maximum Ratings" may cause permanent damage to the device.

These are stress ratings only. Functions of this device at these or any other conditions above those

indicated in the operational sections of this specification is not implied. Any expos-ure to absolute

maximum rating conditions for extended periods may affect device reliability.

Electrical Characteristics

(VSS=0V, Ta=25

°C, FOSC=65536Hz, unless otherwise specified)

Paramater

Symbol

Min

Typ

Max

Conditions

Operating Voltage

V

DD

1.5V

-

3V

Operating Current

I

D

-

-

20uA

V

Drive Current

I

Drive

-

-

200uA

V

O/P Sink Current

I

Sink

-

-

5uA

V

Frequency Deviation Per Lot

∆F/F

-12%

-

+33%

V

Frequency Stability

∆F/F

10%

-

-

(F

Functional Description

• Oscillator Circuit

The oscillation frequency is used for tone and beat generators. Its accuracy affects the quality of the

music.

• Tone Generator

Tone frequencies are oscillator frequencies-M, where M is any even number from 64 to 256. Within a

melody 14 scales can be selected including PAUSE code and END code. The tone generator is a

programmed divider. The range of scales is from "C4" to "C6" and that for freq-uency varies from

258Hz to 23768Hz.

• Rhythm Generator

The rhythm generator is also a programmed divider. It contains 15 available rhythms as follows:

1/4

1/2

3/4

1

1-1/4

1-1/2

1-3/4

2

2-1/4

2-1/2

2-3/4

3

3-1/4

3-1/2

3-3/4

J. Four rhythms can be selected from these.

• Melody Rom

The Mask ROM can memorize 64 notes with 6 bits. 4 bits are used for controlling the scale co-de and

2 bits are used for controlling the rhythm code.

• Tempo Generator

There are 15 available tempos in the H66T19/32/68 Series. The 15 tempos are: 128, 137, 148, 160,

175, 192, 213, 240, 274, 320, 480, 640, 960, 1920 J / minute.