HT38A5 Datasheet, PDF (1/11 Pages) Holtek Semiconductor Inc – 12 Melody Music Generator

HT38A5
12 Melody Music Generator
Features
· Operating voltage: 2.4V~5.0V
· Operating frequency: 8MHz
· Two operating mode MCU control mode key control
mode
· Low voltage detect
· Volume control
· Hold key
· Rang detect
· Hook
· Mono output
· High D/A converter resolution: 16 bits
· Polyphonic up to 8 notes
· 16-pin DIP, 20-pin SOP package
General Description
The HT38A5 is a CMOS VLSI designed for musical in-
struments, especially 12 melody songs. The HT38A5 is
built-in with a controller and an WTS (Wave Table Syn-
thesizer).
Block Diagram
The HT38A5 has applications in areas such as phone
ringtones, high function toys, musical boxes, doorbells
etc.
P A 0~P A 7
O SC1
O SC2
RES
3 2 K ´ 1 6 - b it
ROM
8 - B it
208´8
M CU
RAM
VDD
VSS
VDDA
VSSA
M u ltip lie r /P h a s e
G e n e ra l
1 6 - B it
DAC
AUD
Pin Assignment
PA4
PA5
PA6
PA7
VSS
VDD
VDDA
TEST
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
H T38A 5
1 6 D IP -A
PA3
PA2
PA1
PA0
O SC2
O SC1
RES
AUD
PA4
PA5
PA6
PA7
VSS
VSSA
VDD
NC
VDDA
TEST
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
H T38A 5
2 0 S O P -A
PA3
PA2
PA1
PA0
NC
O SC2
O SC1
NC
RES
AUD
Rev. 1.00
1
November 2, 2006