SM1125 Overview
Number 1 2 3 4 5 6 7 8 Name OSC SI SC ST TEST MTO VDD VSS I/O I I I I I O Function Built-in RC oscillator option: External resistor and capacitor connection pins External clock input option: External reference clock input (gate circuit built-in) Playback control serial interface data input Playback control serial interface clock input Playback start/stop control signal input Test input pin.
SM1125 Key Features
- External clock input versions (12 frequencies)
- 32.768 kHz system: 32.768, 65.536 and 131.072 kHz
- 37.5 kHz system: 37.5, 75.0 and 150.0 kHz
- 38.4 kHz system: 38.4, 76.8 and 153.6 kHz
- 48.0 kHz system: 48.0, 96.0 and 192.0 kHz
- Built-in oscillator versions (4 frequencies)
- 38.4 kHz (standard oscillator frequency)
- 32.768 kHz
- 37.5 kHz
- 48.0 kHz 2-pin serial data melody selection and 1-pin melody playback control Power save function