Datasheet

Features
t~ Four Sounds tan be selected
7 A magnetic speaker tan be driven by connecting an
EI Typical 3V *Operation voltage
NPN transisior
EI RC oscillator with an extemal resistor or an osciliator/
m Power on reset
resistor is built-in. (mask Option)
._
_.a
~... --
General Description
The UM3561 is a lowcost, tow-power CMOS LSI designed module tan be constructed with cnly a few additionöl
tor use in toy applications. Since the integrated circuit components. The UM3581 contains a programmed mask
includes oscillator and selector circuits, a compact sound
ROM to simulate siren sounds.
Block Diagram
Pin Configuration
SEL2
“SS
OUTPUT
NC
c2
e
OS
7
OSCl
UM3561
6
SEL1
5 “DD
OSCl
osc2
OUTPUT
‘1-50