HT37A70 Datasheet, PDF (1/85 Pages) Holtek Semiconductor Inc – 8-Channel Music Synthesizer MCU

HT37A70/60/50/40/30/20
8-Channel Music Synthesizer MCU
Technical Document
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· Operating voltage:
3.6V~5.5V (HT37A70/60)
3.3V~5.5V (HT37A50/40)
2.4V~5.5V (HT37A30/20)
· Operating frequency: 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 2-ch stereo or 1-ch mono 16-bit DAC
converter
· Integrated power Amplifier
· Integrated 8-channel 12-bit A/D converter
· Eight 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 architec-
ture microcontroller specifically designed for various
Music and ADPCM applications. It provides an 8-bit
MCU and 8-channel Wavetable synthesizer. It has a in-
tegrated 8-bit micro controller which controls the syn-
thesizer to generate the melody by setting the special
register. A Power-down function is included to reduce
power consumption.
Selection Table
Most features are common to all devices, the main feature distinguishing them are Program Memory capacity, I/O
count, A/D resolution, DAC output, R2F input and package types. The following table summarizes the main features of
each device.
Part No. VDD Channel OSC
Program
ROM
RAM I/O
Power
Package
D/A
CR/F LVR ADC
AMP
Types
HT37A20
HT37A30
2.4V~
5.5V
HT37A40 _3.3V~
HT37A50 ^5.5V
HT37A60 _3.6V~
HT37A70 ^5.5V
32K´16bit
16 1ch-mono ¾
64K´16bit
20 2ch-Stereo Ö
6+2
11.059
MHz
96K´16bit
320´8bit
28
2ch-Stereo
Ö
128K´16bit
28 2ch-Stereo Ö
192K´16bit
28 2ch-Stereo Ö
256K´16bit
28 2ch-Stereo Ö
2.2V/
4
3.3V
¾ 20/28SOP
2.2V/
8
¾
28SOP,
3.3V
48SSOP
8
3.0V
8
28SOP,
12-bit´8 64QFP,
8
3.3V
80LQFP
8
Rev. 1.00
1
February 17, 2009