5/12

MSS0271

MOSEL VITELIC INC.

Preliminary

Specifications subject to change without notice, contact your sales representatives for the most recent information.

Choice of sample rate

The sample rate should be chosen before chip

manufactured. Two sample rates are provided on

S0271 - either 6200 KHz or 8400 KHz. User is able

to select them on the attached PRF (product request

form).

Rosc

No external Rosc is required.

Audio band amplifier transistor

No amplifier transistor is demanded.

PCB layout

To minimize the interference, the route from trigger

switch to chip should be as short as possible. The

route of trigger signal is recommended to as far away

as possible to speaker output.

CDS as trigger

to be defined.

Power On play

This chip provides power on play function.

User

should be noted that the time parameter T PUD is

zero. To connect the trigger to Vdd, the sound will

be played whenever power is turned on.

Cascading

Cascading chips to have longer duration is possible by

special wiring but not recommended.

Paralleling

Paralleling chips to have more triggers is possible by

special wiring but not recommended.

Bulk Capacitor

A bulk capacitor 0.1uF across the Vdd to Vss is

demanded when using 4.5V (or higher) working voltage.

At every working voltage, the value of bulk capacitor

should be less than or equal to 0.47uF.

Bonding change while Rosc shifts

MVI S0271 provides reliable built-in Rosc by advance

technology. In case Rosc is shilfted (pitch shifted), the

bonding change is able to bias Rosc into nominal value.

The bonding changes are described on page 11/12.

While the pitch shift encountered even it is rarely, the

part number will have a postfix letter-capital "Z" while

the lot number will have the two letter extension

simultaneously. The two-letter extension could be "LH",

"HL" or "HH". This two-letter extension tells how the

bonding should be done which are described on page

11/12.

Standard Code Line Up

1

2

3

4

5

6

Code#

002

010

017

018

020

021

Title

Ho,Ho,Ho, Merry X'mas!!

Happy Hollween!!

Barking Dog

Screaming Girl

Croaking Frog

Sound of Cow

Times to

Repeat

0

1

2

0

2

1

Trigger

Edge

Edge

Edge

Edge

Edge

Level

Unhold

Unhold

Unhold

Unhold

Unhold

Unhold

Irret.

Irret.

Irret.

Irret.

Irret.

Irret.

LB

Busy

Busy

Busy

6 Hz LED

3 Hz LED

3 Hz LED

Deb.

Fast

Fast

Fast

Fast

Slow

Slow

SR

(Hz)

6.2 K

6.2 K

8.4 K

8.4 K

6.2 K

6.2 K

Remarks

Times to

Play

1

2

3

1

3

2

PID257*** 05/97