Integrated Circuits Inc. aIVR1004/2104/4208

Oct 12, 2009

6

TYPICAL APPLICATIONS

Using 3.3V Battery

Using 4.5V Battery

VDD,VDDA

VS

4.5V

RSTB

PB0

PB1

PB2

OSC

0.1uF

C1

Tr

VOUT2

_

8Ω 1/4W

Speaker

HT7335

Output driving of HT LDO:

HT7136 (30mA, 3.6V)

HT7133 (30mA, 3.3V)

HT7536 (100mA, 3.6V)

HT7335 (250mA, 3.5V)

Rb

4.7K

Note :

PB0 to PB2 are set to input

C1 = 0.1uF to 2.2uF depend on the kind of power supply.

VDD,VDD

VSS

3.3V

RSTB

PB0

PB1

PB2

OSC

Crst = 0.1uF

C1

8 / 16Ω

Speake

VOUT1

VOUT2

_

PB3

Rrst = 4.7K

Note :

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

C1 = 0.1uF to 2.2uF depend on the kind of power supply and before the main switch.

R1 = 1M Ohm is optional for fast discharge of Crst when power off.

R1