HT37A70/60/50/40/30/20
8-Channel Music Synthesizer MCU
Technical Document
·
-
Features
·
Operating voltage:
·
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
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
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
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
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
32K´16bit
2.4V~
5.5V
HT37A30
HT37A40
HT37A50
HT37A60
HT37A70
3.3V~
5.5V
3.6V~
5.5V
6+2
11.059
MHz
64K´16bit
96K´16bit
128K´16bit
192K´16bit
256K´16bit
320´8bit
20
28
28
28
28
2ch-Stereo
2ch-Stereo
2ch-Stereo
2ch-Stereo
2ch-Stereo
RAM
I/O
D/A
Power
CR/F
AMP
¾
Ö
Ö
Ö
Ö
Ö
4
LVR
2.2V/
3.3V
2.2V/
3.3V
3.0V
8
12-bit´8
8
3.3V
8
ADC
¾
¾
Package
Types
20/28SOP
28SOP,
48SSOP
HT37A20
16
1ch-mono
8
8
28SOP,
64QFP,
80LQFP
Rev. 1.00
1
February 17, 2009
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
