Document
www.DataSheet4U.com
HT3834 36 Melody Music Generator
Features
· Operating voltage: 2.4V~5.0V · ROSC Operating frequency: 6MHz · Three operating modes for 28-pin package, · Volume control · Hold key · Ring detect · Hook detect · Mono output · High D/A converter resolution: 16 bits · Polyphonic 4 notes · 16/28-pin SOP package
MCU control mode, key control mode and manual mode
· Dual operating mode for 16-pin package, key control
mode and MCU mode
· Low voltage detect
General Description
The HT3834 is a CMOS VLSI designed for musical instruments, especially 36 melody songs. The HT3834 has an integrated controller and a WTS (Wave Table Synthesizer). The HT3834 has applications in areas such as phone ringtones, high function toys, musical boxes, doorbells etc.
Block Diagram
P A 0 ~ P A 7 P B 0 ~ P B 7 O S C 1 O S C 2 R E S 8 - b it M C U 3 2 K ´ 1 6 - b it R O M 2 0 8 ´ 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 A U D IO V D V S V D V S D D A S A S
Pin Assignment
P B 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 P B 0 A U D T E S T V D D A V S S A A U D 1 2 3 4 5 6 7 8 H T 3 8 3 4 1 6 S O P -A V D D A V S S A O S C 2 O S C 1 V S S V D D R E S 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 P A 7 P A 6 P A 5 P A 4 P A 3 P A 2 P A 1 P A 0 O S C 2 O S C 1 V S S V D D R E S N C N C N C 2 8 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 1 9 1 8 1 7 1 6 1 5 H T 3 8 3 4 2 8 S O P -A P B 2 P B 3 P B 4 P B 5 P B 6 P B 7 P A 7 P A 6 P A 5 P A 4 P A 3 P A 2 P A 1 P A 0
Rev. 1.00
1
November 2, 2006
www.DataSheet4U.com
HT3834
Pad Assignment
P B 0 P B 1 P B 2 P B 3 P B 5 P B 4 1 9 1 8 1 7 1 6 4 1 5 1 4 1 3 P B 6 P B 7 P A 7 P A 6 P A 5 P A 4 P A 3
A U D T E S T V D D A V S S A 3 2
1
2 5
2 4 2 3 2 2
2 1 2 0
(0 , 0 ) O S C 2 5
O S C 1 6 7 8 9 V S S V D D R E S
1 0 P A 0
1 1 1 2 P A 1 P A 2
Chip size: 2135´2385 (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 10 11 12 13 X -876.150 -876.150 -876.150 -876.150 -916.350 -916.350 -916.350 -916.350 -916.350 710.500 810.500 921.100 916.350 Y 1043.000 931.200 817.560 715.600 -63.124 -740.976 -842.650 -942.650 -1044.324 -1041.350 -1041.350 -1041.350 414.500 Pad No. 14 15 16 17 18 19 20 21 22 23 24 25 X 916.350 916.350 916.350 916.350 916.350 916.350 704.250 593.650 493.650 383.050 283.050 172.450 Y
Unit: mm
514.500 625.100 725.100 835.700 935.700 1046.300 1041.550 1041.550 1041.550 1041.550 1041.550 1041.550
Rev. 1.00
2
November 2, 2006
www.DataSheet4U.com
HT3834
Pad Description
Pad Name VDD VDDA VSS VSSA PA0~PA7 I/O ¾ ¾ ¾ ¾ I/O Internal Connection ¾ ¾ ¾ ¾ Wake-up, Pull-high or None Pull-high or None ¾ X¢tal/Resistor ¾ ¾ Positive power supply DAC power supply Negative power supply, ground DAC negative supply, ground Bidirectional 8-bit I/O port, wake-up by mask option Function
PB0~PB7 RESET OSC1 OSC2 AUD
I/O I I O O
Bidirectional 8-bit I/O port Reset input, active low XIN for X¢tal or ROSCIN for resistor by mask option XOUT or T1 DAC output .