HT37Q20 Datasheet | Holtek Semiconductor

Features - Operating voltage: 3.6V~5.5V (HT37Q70/60) 3.3V~5.5V (HT37Q50/40) 2.4V~5.5V (HT37Q30/20) - Operating frequency: typical 11.059MHz - Oscillation modes for the Oscillator clock f OSC: Crystal (11.059MHz) 1-pin RC oscillation typ. 11.059MHz - Built-in 8-bit MCU (HT-8) with 320´8 bits RAM - Built-in 32K´16-bits to 256K´16-bits ROM for program/data shared - Eight-level subroutine nesting - 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 16 to 28 bidirectional I/O lines - Integrated 1-ch mono 16-bit DAC converter - Integrated power Amplifier - Four channel polyphonic synthesizer - Low voltage reset (Tolerance ± 10%) - External interrupt INT - External 2 Timer clock input - 4 or 8 touch switch input - ADPCM decoder - Bit manipulation instructions - 63 powerful instructions - All instructions in 1 or 2 machine cycles General Description The device is an 8-bit high performance RISC architecture microcontroller specifically designed for various Music and ADPCM applications. It provides an 8-bit MCU and 4-channel Wavetable synthesizer. It has a in- tegrated 8-bit micro controller which controls the synthesizer to generate the melody by setting the special register. A Power-down function is included to reduce power consumption. Selection Table Most features are mon to all devices, the main feature distinguishing them are Program Memory capacity, I/O count, DAC output, R2F input and package types. The following table summarizes the main features of each device. Program Part No. VDD Channel OSC I/O Power Package D/A CR/F LVR Types HT37Q20 HT37Q30 2.4V~...