HT37B90 mcu equivalent, 8-channel music synthesizer 8-bit mcu mcu.
* Operating voltage: 2.4V~5.5V for HT37B50/30 3.0V~5.5V for HT37B90/70
* Operating frequency: 12.8MHz
* Oscillation modes for the oscillator clock
fOSC: cryst.
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