HT3834
36 Melody Music Generator
Features
·
Operating voltage: 2.4V~5.0V
·
R
OSC
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 in-
struments, 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
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
