sm1350 Nippon Precision Circuits Inc, (NPC), sm1350 Datasheet - Page 11

• Manufacturer Part Number: sm1350
• Description: High Tone Quality Melody Lsi
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

Pin Functions
Binary select mode (MODE = LOW)
A melody (1 to 16) is selected according to the condition (H or L) of each 4 terminals (S0 to S3).
One-shot melody output (LH = LOW)
Level hold melody output (LH = HIGH)
H : V
Note: Don’t select any address with no melody recorded.
S3
L
L
L
L
L
L
L
L
Figure 7. Level hold mode (binary select) with “Select change retrigger [No]” mask option
DD
level, L : V
S2
L
L
L
L
H
H
H
H
S0 to S3
S0 to S3
Melody
Output
Melody
Output
STN
S1
STN
H
H
H
H
L
L
L
L
SS
level
S0
H
H
H
H
L
L
L
L
Note: Refer to the "TIMING DIAGRAMS" section to confirm melody timing specifics.
Note: Refer to the "TIMING DIAGRAMS" section to confirm melody timing specifics.
#N
#N
ST
Figure 6. One-shot mode (binary select)
#N
2nd melody
3rd melody
4th melody
5th melody
6th melody
7th melody
8th melody
1st melody
Melody
#N
SM1350 series
#M
S3
H
H
H
H
H
H
H
H
S2
H
H
H
H
L
L
L
L
#M
S1
L
L
H
H
L
L
H
H
#N
NIPPON PRECISION CIRCUITS INC.—11
S0
H
H
H
H
L
L
L
L
ST
10th melody
11th melody
12th melody
13th melody
14th melody
15th melody
16th melody
9th melody
Melody