HT2860
6-Sound Generator
Features
•
•
•
•
Single power supply: 2.4V~4.5V
Low standby current: 1
µ
A (Typ.)
at V
DD
=3V
Auto power-off function
Six different sound sections
•
•
•
•
K1 to K6 independently chosen or as
a cascade control
Speaker or direct piezo application
0.5Hz~1Hz LED flash output
Minimal external components
General Description
The HT2860 is a CMOS LSI chip designed for
use in sound effect products. It can generate six
sections of programmable sounds. The LSI is
equipped with tone circuit and control logic to
generate various sounds including door bell,
alarm, melodies, etc. Users can play not only
sound sections (S1~S6) by triggering a single
key (K1~K6), but serial sound sections by si-
multaneously triggering more than one key ac-
cording to the key priority where K1 is the
highest and K6 is the lowest. The customer’s
sound sample is analyzed and programmed into
an internal ROM by changing a mask layer
during device fabrication. The HT2860 is suit-
able for various toy applications.
Pin Assignment
OSC2
VDD
KEY6
KEY5
KEY4
KEY3
KEY2
KEY1
VSS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OSC3
TEST3
OSC1
OSC2
OUT
OUT
TEST2
PWR
OSC1
TEST3
LED
OSC3
VDD
KEY6
KEY5
KEY4
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
OUT
OUT
TEST1
TEST2
PWR
VSS
KEY1
KEY2
KEY3
HT2860
– 16 DIP
HT2860
– 18 DIP
1
11th July ’97
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
