EM57000 Datasheet, PDF (3/15 Pages) List of Unclassifed Manufacturers – TINY CONTROLLER-BASED SOUND PROCESSOR

EASY SOUND - EM57000 SERIES
TINY CONTROLLER-BASED
SOUND PROCESSOR
APPLICATION CIRCUIT FOR EM57001
In the following application circuits:
*1 : For heavy loading application, adding an electrolytic capacitor between Vcc and Ground is recommanded.
The recommanded value for button cell application is 10µF.
*2 : The recommanded value for button cell application is 750Ω or less.
4-key Application Circuit
*1
VCC
U1
9
VDD
10
OSC
12
TEST
11
VSS
P2.0 ¹
P2.1
P2.2
P2.3
2
3
4
P3.0 ⁵
P3.1
P3.2
P3.3
6
7
8
VO ¹³
Rb^*2
VCC
TR1
TR2
TR3
TR4
VCC
NPN
8-key Application Circuit
VCC*1
U1
9
VDD
10
OSC
12
TEST
11
VSS
P2.0 ¹
P2.1
P2.2
P2.3
2
3
4
P3.0
P3.1
P3.2
P3.3
5
6
7
8
VO ¹³
TR1
TR2
TR3
TR4
TR5
TR6
TR7
TR8
VCC
NPN
Rb^*2
* This specification are subject to be changed without notice.
3.19.2002 3