HT37B90 Datasheet, PDF (1/80 Pages) Holtek Semiconductor Inc – HT37B90

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
f_OSC: 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
· Low voltage reset (Tolerance ±5%)
· External interrupt INT
· External 2 Timer clock input
· 8 touch switch input
· ADPCM decoder
· IIS function for HT37B90/70
· UART function for HT37B90/70
· SPI function for HT37B90/70
· 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 16-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.
Program
Power
Part No. VDD Channel OSC
RAM I/O D/A
CR/F ADC
ROM
AMP
Package
IIS UART SPI
Types
HT37B30
2.4V~
64K´16
2ch-
32
Ö
Stereo
5.5V
HT37B50
128K´16 640´8 32 ^2ch-
Ö
12.8
Stereo
14+2
HT37B70
MHz
256K´16
2ch-
40
Ö
3.0V~
Stereo
5.5V
HT37B90
512K´16 1280´8 40 ^2ch-
Ö
Stereo
8
¾ ¾ ¾ 80LQFP
8
¾ ¾ ¾ 80LQFP
12-bit´8
8
Ö
Ö
Ö 80LQFP
8
Ö
Ö
Ö 100LQFP
Rev. 1.00
1
June 22, 2017