12 Melody Music Generator
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HT38A5 12 Melody Music Generator
Features
· Operating voltage: 2.4V~5.0V · Operating frequency: 8MH...
Description
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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 R O M 8 - B it M C U 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
P A 0 ~ P A 7
O S C 1 O S C 2 R E S
V D V S V D V S S
D D A S A
A U D
Pin Assignment
P A 4 1 2 3 4 5 6 7 8 9 1 0 P A 5 P A 4 1 2 3 4 5 6 7 8 P A 5 P A 6 P A 7 V S S V D D V D D A T E S T 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 P A 3 P A 2 P A 1 P A 0 O S C 2 O S C 1 R E S A U D P A 6 P A 7 V S S V S S A V D D N C V D D A T E S T 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 P A 3 P A 2 P A 1 P A 0 N C O S C 2 O S C 1 N C R E S A U D
H T 3 8 A 5 1 6 D IP -A
H T 3 8 A 5 2 0 S O P -A
Rev. 1.00
1
November 2, 2006
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HT38A5
Pad Assignment
P A 5 P A 6
1 2 1 7
P A 4
1 6
P A 3
1 5
P A 2
1 4 1 3 1 2
P A 1 P A 0
P A 7
(0 , 0 )
1 1
O S C 2
V S S
3 4
V S S A V D D V D D A
5 6 7 8 1 0 9
O ...
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