HOLTEK HT36A3 User Manual

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Features

·

Operating voltage: 2.4V~5.0V

·

Operating frequency: 3.58MHz~12MHz (typ. 8MHz)

·

20 bidirectional I/O lines

·

Two 8-bitprogrammable timer with 8 stage prescaler

·

Watchdog Timer

·

Built-in 8-bit MCU with 208´8 bits RAM

·

Built-in 32K´16-bit ROM for program/data shared

·

Mono output

·

High D/A converter resolution: 16 bits

·

Polyphonic up to 8 notes

·

Independent pan and volume mix can be assigned to each sound component

General Description

The HT36A3 is an 8-bit high performance RISC-like microcontroller specifically designed for music applica tions. It provides an 8-bit MCU and a 8 channel wavetable synthesizer. The program ROM is composed of both program control codes and wavetable voice codes, and can be easily programmed.

HT36A3

8-Bit Music Synthesizer MCU

·

Sampling rate of 25kHz as 6.4MHz for system frequency

·

Eight-level subroutine nesting

·

HALT function and wake-up feature to 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, 48-pin SSOP package

The HT36A3 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 3

O S C 1

O S C 2

R E S

8 - B i t M C U

3 2 K´1 6 - b i t

R O M

2 0 8

8

´

R A M

M u l t i p l i e r / P h a s e

G e n e r a l

1 6 - B i t

D A C

V D D V S S V D D A V S S A

A U D

Rev. 1.00 1 June 30, 2003

Pin Assignment

V S S A

V D D

V D D A

T E S T

A U D

P A 4

P A 5

P A 6

P A 7

N C

V S S

N C

1

2

3

4

5

6

7

8

9

1 0

1 1

1 2

1 3

1 4

H T 3 6 A 3

2 8 S O P - A

HT36A3

P A 4

1

P A 5

2

P A 6

3

P A 7

4

P B 0

5

P B 1

6

P B 2

7

P B 3

8

P B 4

9

P B 5

V S S A

V D D

V D D A

1 0

P B 6

1 1

P B 7

1 2

N C

1 3

N C

1 4

V S S

1 5

1 6

1 7

1 8

N C

1 9

N C

2 0

N C

2 1

N C

2 2

N C

2 3

N C

2 4

2 8

P A 3

2 7

P A 2

2 6

P A 1

2 5

P A 0

2 4

N C

2 3

N C

2 2

O S C 2

2 1

N C

2 0

O S C 1

1 9

N C

1 8

R E S

1 7

N C

1 6

N C

1 5

N C

H T 3 6 A 3

4 8 S S O P - A

P A 3

4 8

P A 2

4 7

P A 1

4 6

P A 0

4 5

P C 3

4 4

P C 2

4 3

P C 1

4 2

P C 0

4 1

N C

4 0

N C

3 9

N C

3 8

N C

3 7

N C

3 6

N C

3 5

O S C 2

3 4

O S C 1

3 3

N C

3 2

N C

3 1

R E S

3 0

N C

2 9

N C

2 8

N C

2 7

A U D

2 6

T E S T

2 5

Pad Assignment

V S S

V S S A

V D D

V D D A

P B 4

P B 5

P B 6

P B 7

P C 3

P C 2

P C 1

P B 3

P B 2

P B 1

P B 0

P A 7

P A 6

P A 5

P A 4

P A 3

P A 2

P A 1

P A 0

2 9

2 8

1

2

3

4

2 7 2 6

2 4

2 5

2 3 2 2

1 9

2 1

1 8 1 7

2 0

P C 0

1 4

1 5

1 6

( 0 , 0 )

1 3

O S C 2

5

6

7

1 2

8

9

1 0

A U D

T E S T

O S C 1

1 1

R E S

Chip size: 83 ´ 111 (mil)

2

* The IC substrate should be connected to VSS in the PCB layout artwork.

Rev. 1.00 2 June 30, 2003

Pad Coordinates

Pad No. X Y Pad No. X Y

1

2

3

4

5

6

7

8

9

10

11 875.950

12 875.950

13 875.950

14 901.500 1240.150 29

15 793.900 1240.150

-879.100

-898.600 -805.050

-898.600 -931.910

-847.650 -1041.910

-847.650 -1180.350

-193.090 -1200.600

-81.290 -1200.600

1202.400 16 693.900 1240.150

1097.100 17 583.300 1240.150

986.500 18 483.300 1240.150

886.500 19 372.700 1240.150

20 272.700 1240.150

21 162.100 1240.150

22 62.100 1240.150

-1262.274

-1149.626

-471.774

23

24

25

26

27

28

-48.500

-148.500

-259.100

-359.100

-469.700

-569.700

-680.300

Pad Description

I

Internal

Connection

Pull-High

or None

Pull-High

or None

Pull-High

or None

¾

Function

Bidirectional 8-bit Input/Output port

Negative power supply, ground

Negative power supply of DAC, ground

Digital power supply

DAC power supply

Audio output

No connection (open)

Reset input, active low (no pull-high)

OSC1 and OSC2 are connected to an RC network or a crystal (by mask op tion) for the internal system clock. In the case of RC operation, OSC2 is the output terminal for 1/8 system clock. The system clock may come from the crystal, the two pins cannot be floating.

Pad Name I/O

PA0~PA7 I/O

PB0~PB7 I/O

PC0~PC3 I/O

VSS

VSSA

VDD

VDDA

AUD O

TEST

RES

OSC1 OSC2

¾¾

O

HT36A3

1240.150

-

Rev. 1.00 3 June 30, 2003

HT36A3

Absolute Maximum Ratings

Supply Voltage .............................VSS-0.3V to VSS+6V

Input Voltage .............................V

3V to VDD+0.3V

SS-0.

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil ity.

Storage Temperature ...........................-50°Cto125°C

Operating Temperature ..........................-25°Cto70°C

-

D.C. Characteristics

Symbol Parameter

V

I

V

DD

STB

OH

OL

IH

IL

Operating Voltage

Operating Current 4.5V

Standby Current (WDT Disabled) 4.5V No load, System HALT

I/O Ports Source Current 4.5V

I/O Ports Sink Current 4.5V

Input High Voltage for I/O Ports 4.5V

Input Low Voltage for I/O Ports 4.5V

Test Conditions

V

DD

Conditions

¾¾

No load, f

=4.5V

V

OH

=0.5V

V

OL

OSC

=8MHz

¾

Ta=25°C

Min. Typ. Max. Unit

2.2 4.5 5.5 V

¾

23

0.8V

0

816mA

13

¾

V

¾

DD

¾

DD

0.2V

DD

mA

V

Rev. 1.00 4 June 30, 2003

HOLTEK HT36A3 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual