SM1350 データシートの表示（PDF） - Nippon Precision Circuits

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SM1350

High Tone Quality Melody LSI

Nippon Precision Circuits  

Level hold melody output (LH = HIGH)

STN

SM1350 series

S0 to S3

#N

Melody

Output

#N

#N

Note: Refer to the "TIMING DIAGRAMS" section to confirm melody timing specifics

Figure 7. Level hold mode (binary select) with “Select change retrigger [No]” mask option

If the “Select change retrigger [Yes]” mask option is leading note when any of the S0 to S3 inputs changes

selected, a new melody starts playing from the state.

STN

S0 to S3

#N

#M

Melody

Output

#N

#M

Note: Refer to the "TIMING DIAGRAMS" section to confirm melody timing specifics

Figure 8. Level hold mode (binary select) with “Select change retrigger [Yes]” mask option

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. The number of melodies in the cycle is set by

master-slice option. 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

#N

#N+1

#N+2

Note: Refer to the "TIMING DIAGRAMS" section to confirm melody timing specifics

Figure 9. One-shot mode (serial select)

NIPPON PRECISION CIRCUITS—11

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