SM1350ADJM View Datasheet(PDF) - Nippon Precision Circuits

Part Name

Description

Manufacturer

SM1350ADJM

High Tone Quality Melody IC

Nippon Precision Circuits  

SM1350ADJM

Level hold melody output (LH=HIGH)

Level hold melody output is played when STN is LOW, and it goes HIGH, it is melody control which stops in the

middle of melody. When either of S0 to S3 changes during melody output, it restarts from the head of the melody newly

selected.

* This function is effective only while the level hold melody output in the binary select mode.

STN

S0 to S3

Melody Output

(SP pin)

#N

#M

#N

#M

Figure 7. Level hold mode

Binary select mode (MODE=LOW)

A melody of 1 to 16 is selected according to the condition (0000 to 1111) of S0 to S3.

Serial select mode (MODE=HIGH)

In serial select mode, the next melody is selected by cycling through the melodies in the order N→N

1…N-1→N when the STN input goes LOW. Note that when melody output is stopped using the STOP input, the

melody-select counter increments.

One-shot melody output (LH=LOW)

STN

Melody Output

(SP pin)

#N

#N+1

Figure 8. One-shot mode (serial select)

#N+2

Level hold melody output (LH=HIGH)

STN

Melody Output

(SP pin)

#N

#N+1

Figure 9. Level hold mode (serial select)

#N+1

SEIKO NPC CORPORATION - 10

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