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HT38A5 12 Melody Music Generator
Features
* Operating voltage: 2.4V~5.0V * Operating frequency: 8MHz * Two operating mode MCU control mode key control * Rang detect * Hook * Mono output * High D/A converter resolution: 16 bits * Polyphonic up to 8 notes * 16-pin DIP, 20-pin SOP package
mode
* Low voltage detect * Volume control * Hold key
General Description
The HT38A5 is a CMOS VLSI designed for musical instruments, especially 12 melody songs. The HT38A5 is built-in with a controller and an WTS (Wave Table Synthesizer). The HT38A5 has applications in areas such as phone ringtones, high function toys, musical boxes, doorbells etc.
Block Diagram
3 2 K 1 6 - b it ROM 8 - B it MCU 2088 RAM M u ltip lie r /P h a s e G e n e ra l 1 6 - B it DAC
PA0~PA7
OSC1 OSC2 RES
VD VS VD VS S
D DA SA
AUD
Pin Assignment
PA4 1 2 3 4 5 6 7 8 9 10 PA5 PA4 1 2 3 4 5 6 7 8 PA5 PA6 PA7 VSS VDD VDDA TEST 16 15 14 13 12 11 10 9 PA3 PA2 PA1 PA0 OSC2 OSC1 RES AUD PA6 PA7 VSS VSSA VDD NC VDDA TEST 20 19 18 17 16 15 14 13 12 11 PA3 PA2 PA1 PA0 NC OSC2 OSC1 NC RES AUD
H T38A 5 1 6 D IP -A
H T38A 5 2 0 S O P -A
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HT38A5
Pad Assignment
PA5 PA6
1 2 17
PA4
16
PA3
15
PA2
14 13 12
PA1 PA0
PA7
(0 , 0 )
11
OSC2
VSS
3 4
VSSA VDD VDDA
5 6 7 8 10 9
OSC1 RES
TEST
AUD
Chip size: 2110 2530 (mm)2 * The IC substrate should be connected to VSS in the PCB layout artwork.
Pad Coordinates
Pad No. 1 2 3 4 5 6 7 8 9 X -903.425 -903.425 -882.900 -882.900 -831.950 -831.950 -177.390 -65.590 900.650 Y 1096.250 985.650 -650.050 -776.910 -886.910 -1025.350 -1045.600 -1045.600 -1107.950 Pad No. 10 11 12 13 14 15 16 17 X 900.650 900.650 901.625 901.625 697.050 586.450 -588.250 -698.850 Y
Unit: mm
-994.626 -316.774 1006.000 1116.600 1114.025 1114.025 1114.025 1114.025
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HT38A5
Pad Description
Pad Name PA0~PA7 VSSA VSS VDD VDDA TEST AUD RES OSC1 OSC2 I/O I/O 3/4 3/4 3/4 3/4 3/4 O I I O Internal Connection Pull-High or None 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Mode select and control pia. Negative power supply of DAC, ground Negative power supply, ground Positive power supply DAC power supply No connection (open) Audio output for driving a external transistor or for driving HT82V733 Reset input, active low OSC1 and OSC2 are connected to an RC network or a crystal (by mask option) 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. Function
3/4
Absolute Maximum Ratings
Supply Voltage ......................... VSS-0.3V to VSS+5.5V Input Voltage ............................ VSS-0.3V to VDD+0.3V Storage Temperature .......................... -50C to 125C Operating Temperature ......................... -25C to 70C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings 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 reliability.
D.C. Characteristics
Symbol VDD IDD ISTB IOL IOH RPH VIH1 VIL1 VIH2 VIL2 Parameter Operating Voltage Operating Current Standby Current (WDT Disabled) I/O Ports Sink Current I/O Ports Source Current Pull-High Resistance of I/O Ports Input High Voltage for I/O Ports Input Low Voltage for I/O Ports Input High Voltage (RES) Input Low Voltage (RES) Test Conditions VDD 3/4 5V 5V 5V 5V 5V 5V 5V 5V 5V Conditions 3/4 No load fOSC=8MHz No load System HALT VOL=0.5V VOH=4.5V VIL=0V 3/4 3/4 3/4 3/4 Min. 2.4 3/4 3/4 9.7 -5.2 11 3.5 0 3/4 3/4 Typ. 3 8 1 16.2 -8.7 22 3/4 3/4 4 2.5 Max. 5 16 3/4 3/4 3/4 44 5 1.5 3/4 3/4
Ta=25C Unit V mA mA mA mA kW V V V V
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HT38A5
A.C. Characteristics
Symbol MCU interface fOSC fSYS tWDT tRES System Frequency System Clock Watchdog Time-Out Period (RC) External Reset Low Pulse Width 5V 5V 3/4 3/4 8MHz crystal 3/4 Without WDT prescaler 3/4 3/4 4 9 1 8 3/4 17 3/4 3/4 8 35 3/4 MHz MHz ms ms Parameter Test Conditions VDD Conditions Min. Typ. Max. Ta=25C Unit
Function Description
Mode selection Low voltage detect Key Control Mode This key chooses and plays one of the 12 stored musical melodies. When the key is pressed the next melody in the list will be selected and played. When the HOLD key is pressed the telephone hold function will be activated and when an incoming ring signal is detected the music will be played. Controls the music volume in 8 discrete steps. Each time the key is pressed the volume will reduce one step at a time until the lowest volume is reached. When the lowest volume is reached, the next key press will return the volume to its maximum level. If this key is pressed during a phone conversation the phone will be put on hold and the caller can listen to the music while waiting. If, when the music is playing, the handset is lifted, the music will immediately stop playing. After this happens the HOLD function will have no effect for a period of 2 seconds. When an incoming 13Hz~90Hz ring signal is detected after a period of 200ms, the music will automatically start playing. When the incoming ring signal stops, after a period of 6 seconds the music will stop playing. This line detects the on/off hook condition of the telephone. Only when the telephone is in an on-hook condition, can the music be chosen and played. If the handset is lifted to talk, the music will stop playing and the HOLD key will be effective. PA0=0, key control mode PA0=1, MCU control mode PA4=0,(normal) ;PA4=1(low voltage active, program stop)
PA1: Melody select key
PA2: Volume key
PA3: Telephone Hold key
PA6: Ring Detect
PA7: Hook Detect
Communication with External MCU Control Mode (Clock Mode) Communication with External CPU PA6:clock pin PA7:data pin Clock from external CPU Data from external CPU
Rev. 1.00
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November 2, 2006
HT38A5
Timing Chart
DCK T1 DATA B it0 B it1 30m s B it2 B it3 T2 B it4 T2 B it5 B it6 4m s B it7 P a r ity
T1
10m s
T2
300ms
Note:
400ms after power up, the device will be ready to communicate with the external CPU using the CLK and DATA lines. Communication via the CLK and DATA lines is conducted in a simple manner. The device will obtain its data on the high going edge of the CLK line. If the device does not receive a complete byte within 50ms then the present byte will be discarded and the next byte will then be received. Even-parity is used for data checking. For the previous 8-bits, if the total number of 1s is odd then the parity bit is set to 1, otherwise it is set to 0. If the parity is incorrect then the byte will be discarded.
Data Type (Command) 00h~0bh 40h-4fh 50h Melody List Command 00h 01h 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh English Song Name Toreador Song Jingle Bells Chinese New Year Santa Lucia My Old Kentucky Home La Cucaracha Allegro Im a Little Teapot Sabre Dance Happy Birthday to You Working on the Railroad Radetzky March This command will select and play one of the 12 stored musical melodies. If the chosen melody number exceeds the highest number of that stored in the device then the command will be ignored and no action taken. 16 level volume control, 40h refers to highest volume Stop play
Rev. 1.00
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HT38A5
Application Circuits
V
DD
A m p lile r C u r c u it c a n u s H T 8 2 V 7 3 3 V
DD
VDD OSC1 120~150kW OSC2
VDDA AUD TEST PA0~PA3
1kW
8050
SPK 8W
V 100kW
DD
PA4 PA5 PA6 RES PA7 VSS H T38A 5 CLO CK DATA
V o lta g e D e te c t L o w : N o rm a l H ig h : L o w V o lta g e R e s e t E n a b le A m p L o w : N o rm a l H ig h : S ta n d b y
0 .1 m F
V
DD
A m p lile r C u r c u it c a n u s H T 8 2 V 7 3 3 V
DD
VDD OSC1 120~150kW OSC2 V 100kW RES 0 .1 m F
DD
VDDA AUD TEST PA5 PA7 10kW
1kW
8050
SPK 8W
E n a b le A m p L o w : N o rm a l H ig h : S ta n d b y V V
DD DD
IS C 2 D E C K -IS O 1
PA6
22mF 250V T IP R IN G 2 .2 k W 47kW
10kW
HO LD VOL
10kW NAME
PA3 PA2 PA1 H T38A 5
PA4 PA0 VSS
V o lta g e D e te c t L o w : N o rm a l H ig h : L o w V o lta g e R e s e t
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November 2, 2006
HT38A5
Package Information
16-pin DIP (300mil) Outline Dimensions
A 16 B 1 9 8
H C D E F G
a
I
Symbol A B C D E F G H I a
Dimensions in mil Min. 745 240 125 125 16 50 3/4 295 335 0 Nom. 3/4 3/4 3/4 3/4 3/4 3/4 100 3/4 3/4 3/4 Max. 775 260 135 145 20 70 3/4 315 375 15
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November 2, 2006
HT38A5
20-pin SOP (300mil) Outline Dimensions
20
A
11
B
1
C C'
10
G H
D E F
a
Symbol A B C C D E F G H a
Dimensions in mil Min. 394 290 14 490 92 3/4 4 32 4 0 Nom. 3/4 3/4 3/4 3/4 3/4 50 3/4 3/4 3/4 3/4 Max. 419 300 20 510 104 3/4 3/4 38 12 10
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HT38A5
Product Tape and Reel Specifications
Reel Dimensions
T2 D
A
B
C
T1
SOP 20W Symbol A B C D T1 T2 Description Reel Outer Diameter Reel Inner Diameter Spindle Hole Diameter Key Slit Width Space Between Flange Reel Thickness Dimensions in mm 3301.0 621.5 13.0+0.5 -0.2 2.00.5 24.8+0.3 -0.2 30.20.2
Rev. 1.00
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November 2, 2006
HT38A5
Carrier Tape Dimensions
D
E F W C
P0
P1
t
B0
D1
P
K0 A0
SOP 20W Symbol W P E F D D1 P0 P1 A0 B0 K0 t C Description Carrier Tape Width Cavity Pitch Perforation Position Cavity to Perforation (Width Direction) Perforation Diameter Cavity Hole Diameter Perforation Pitch Cavity to Perforation (Length Direction) Cavity Length Cavity Width Cavity Depth Carrier Tape Thickness Cover Tape Width Dimensions in mm 24.0+0.3 -0.1 12.00.1 1.750.1 11.50.1 1.5+0.1 1.5+0.25 4.00.1 2.00.1 10.80.1 13.30.1 3.20.1 0.30.05 21.3
Rev. 1.00
10
November 2, 2006
HT38A5
Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor Inc. (Shanghai Sales Office) 7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China 200233 Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor Inc. (Shenzhen Sales Office) 5/F, Unit A, Productivity Building, Cross of Science M 3rd Road and Gaoxin M 2nd Road, Science Park, Nanshan District, Shenzhen, China 518057 Tel: 0755-8616-9908, 8616-9308 Fax: 0755-8616-9533 Holtek Semiconductor Inc. (Beijing Sales Office) Suite 1721, Jinyu Tower, A129 West Xuan Wu Men Street, Xicheng District, Beijing, China 100031 Tel: 010-6641-0030, 6641-7751, 6641-7752 Fax: 010-6641-0125 Holtek Semiconductor Inc. (Chengdu Sales Office) 709, Building 3, Champagne Plaza, No.97 Dongda Street, Chengdu, Sichuan, China 610016 Tel: 028-6653-6590 Fax: 028-6653-6591 Holmate Semiconductor, Inc. (North America Sales Office) 46729 Fremont Blvd., Fremont, CA 94538 Tel: 510-252-9880 Fax: 510-252-9885 http://www.holmate.com
Copyright O 2006 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holteks products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.
Rev. 1.00
11
November 2, 2006

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