SM1350 series

NIPPON PRECISION CIRCUITS—11

Level hold melody output (LH = HIGH)

If the “Select change retrigger [Yes]” mask option is

selected, a new melody starts playing from the

leading note when any of the S0 to S3 inputs changes

state.

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)

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

STN

S0 to S3

#N

#N

#N

Melody

Output

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

STN

S0 to S3

#N

#N

#M

#M

Melody

Output

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

Figure 9. One-shot mode (serial select)

STN

#N

#N+1

#N+2

Melody

Output