HT36M4
Music Synthesizer 8-Bit MCU
Technical Document
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·
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Features
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Operating voltage: 2.6V~5.0V
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Operating frequency:
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Crystal: 8MHz~12MHz
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RC: 11.059MHz
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12 bidirectional I/O lines
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Two 16-bit programmable timer/event counters with
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Independent pan and volume mix can be assigned to
each sound component
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Sampling rate of 44.1kHz as 11.059MHz for system
frequency
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Eight-level subroutine nesting
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HALT function and wake-up feature reduce power
overflow interrupts
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Watchdog Timer
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Built-in 8-bit MCU with 384´8 bits RAM
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Built-in 64K´16-bit ROM for program/data shared
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Mono 16-bit DAC
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One external interrupt
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Polyphonic up to 16 notes
consumption
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Bit manipulation instructions
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16-bit table read instructions
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Low voltage reset 2.2V
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63 powerful instructions
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All instructions in 1 or 2 machine cycles
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20-pin DIP/SSOP/TSSOP package
General Description
The HT36M4 is an 8-bit high performance RISC
microcontroller specifically designed for music applica-
tions. It provides an 8-bit MCU and a 16 channel
wavetable synthesizer. The program ROM is composed
of both program control codes and wavetable voice
codes, which can easily be programmed.
The HT36M4 has a built-in 8-bit microprocessor with
64K´16 program ROM, 384´8 data RAM, 12
bidirectional I/O, encapsulated in 20 TSSOP for applica-
tions where need tinny package such as ring tone gen-
erator for CELLULAR/DECT/CORDLESS PHONES.
Block Diagram
V D
V S
V D
V S
D
D A
S A
S
P A 0 ~ P A 7
P B 0 ~ P B 3
O S C 1
O S C 2
R E S
IN T
P F 0 ~ 2
6 4 K
´
1 6 - b it
R O M
3 8 4
´
8
R A M
M u ltip lie r /P h a s e
G e n e ra l
1 6 - B it
D A C
8 - B it
M C U
A U D IO
Rev. 1.10
1
March 14, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
