Document
HT37B90/HT37B70/HT37B50/HT37B30 8-Channel Music Synthesizer 8-Bit MCU MCU
Note that the HT37B70/HT37B50/HT37B30 devices, although mentioned in this datasheet, have already been phased out and are presently no longer available.
Features
· 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: crystal (12.8MHz) 1-pin RC oscillation typ. 12.8MHz
· Built-in 8-bit MCU (HT-8) with 640´8 or 1280´8 (HT37B90) bits RAM
· Built-in 64K´16-bits to 512K´16-bits ROM for program/data shared
· Two 8 bit timer and one 16 bit timer · Watchdog timer · Power-down and Wake-up features for power saving
operation · 16-bit table read instructions for any bank/page read · Support 32 to 40 bidirectional I/O lines
· Integrated 2-ch stereo 16-bit DAC converter · 12-level subroutine nesting · Integrated power amplifier · Integrated 8-channel 12-bit A/D converter · 16 channel polyphonic synthesizer
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