SM1125 データシートの表示（PDF） - Nippon Precision Circuits
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SM1125 Datasheet PDF : 13 Pages
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BLOCK DIAGRAM
SM1125 series
OSC
SI
SC
ST
OSC
Gate
Master slice
SW1
1/2 or 1/4
SW2
Divider
1/128
Control
Circuit
Tempo Latch
Tempo Counter
Rhythm
Counter
Scale
Counter
Scale
ROM
Main
ROM
Multi-
Plexer
Address
Counter
Start
Address
Latch
VSS
VDD
MTO
TEST
PIN DESCRIPTION
Number
1
2
3
4
5
6
7
8
Name
OSC
SI
SC
ST
TEST
MTO
VDD
VSS
I/O
Function
I
Built-in RC oscillator option: External resistor and capacitor connection pins
External clock input option: External reference clock input (gate circuit built-in)
I Playback control serial interface data input
I Playback control serial interface clock input
I Playback start/stop control signal input
I Test input pin. Leave open or tie to VSS. (Pull-down resistance built-in)
O Playback melody signal output
– Supply pin (+)
– Ground pin
SEIKO NPC CORPORATION —2
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