HT37B90 Overview
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.
HT37B90 Key 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
- 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
- 16-bit table read instructions for any bank/page read
- Support 32 to 40 bidirectional I/O lines