HT36B2_05 Datasheet, PDF (1/39 Pages) Holtek Semiconductor Inc – 8-Bit Music Synthesizer MCU

HT36B2
8-Bit Music Synthesizer MCU
Features
· Operating voltage: 3.6V~5.0V
· Operating frequency: 3.58MHz~12MHz
(Typ. 11.059MHz)
· 32 bidirectional I/O lines
· Two 16-bit programmable timer/event counters with
overflow interrupts
· Watchdog Timer
· Built-in 8-bit MCU with 576´8 bits RAM
· Built-in 128K´16-bit ROM for program/data shared
· Two High D/A converter resolution: 16 bits
· Polyphonic up to 16 notes
· Independent pan and volume mix can be assigned to
each sound component
· Sampling rate of 44.1kHz as 11.059MHz for system
frequency
· Eight-level subroutine nesting
· HALT function and wake-up feature reduce power
consumption
· Bit manipulation instructions
· 16-bit table read instructions
· 63 powerful instructions
· All instructions in 1 or 2 machine cycles
· 28-pin SOP, 56-pin SSOP package
General Description
The HT36B2 is an 8-bit high performance RISC archi-
tecture microcontroller specifically designed for various
music applications. It provides an 8-bit MCU and a 16
channel wavetable synthesizer. The program ROM
which can be easily programmed is composed of both
program control codes and wavetable voice codes.
The HT36B2 has a built-in 8-bit microprocessor which
programs the synthesizer to generate the melody by
setting the special register from 20H~2AH. A HALT fea-
ture is provided to reduce power consumption.
Block Diagram
P A 0~P A 7
P B 0~P B 7
P C 0~P C 7
P D 0~P D 7
IN T
O SC1
O SC2
RES
1 2 8 K ´ 1 6 - b it
ROM
VDD
VSS
VDDA
8 - B it
576´8
M CU
RAM
S te re o
VSSA
RCH
M u ltip lie r /P h a s e
G e n e ra l
1 6 - B it
DAC
LC H
Rev. 1.10
1
March 10, 2005