Integrated Circuits Inc.

aIVR341N

July 30, 2013

7

TYPICAL APPLICATIONS

Using 3.3V Battery Direct Drive Speaker

Using 4.5V Battery with COUT speaker drive

VSS, VSSA

4.5V

RSTB

PB0

PB1

PB2

OSC

0.1uF

Tr

VOUT2_

COUT

8

1/4W

Speaker

ACE507A33

Output driving of ACE LDO:

ACE507A33 (300mA, 3.3V)

Rb

4.7K

Note :

PB0 to PB2 are set to input

C1 and C2 must be connected directly on the VDD/VDDA and

VSS/VSSA pins

VDDA

C1, 0.1uF

Rp=1ohm

VDD

C2, 0.1uF

VDDA

VSS, VSSA

3.3V

RSTB

PB0

PB1

PB2

OSC

Crst = 0.1uF

C1, 0.1uF

VOUT1

VOUT2_

COUT

PB3

Rrst = 4.7K

Note:

1.

PB0 to PB2 are set to input; PB3 is set to output

2.

C1 and C2 must be connected directly on the VDD, VDDA and VSS, VSSA pins of the chip

3.

R1 is optional for fast discharge of C1, C2 and Crst when power off.

R1

1M

SP

Rp=1ohm

VDD

C2, 0.1uF