Integrated Circuits Inc.
aIVR1004/2104/4208
TYPICAL APPLICATIONS
C1
R1
R
OSC
=610K
VDD,VDD
OSC
PB0
PB1
PB2
VOUT1
VOUT2
_
PB3
RSTB
8 / 16Ω
Speake
3.3V
Rrst = 4.7K
Crst = 0.1uF
VSS
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.
Using 3.3V Battery
HT7335
C1
R
OSC
= 610K
VDD,VDDA
OSC
PB0
PB1
PB2
VOUT2
_
Rb
Tr
8Ω 1/4W
Speaker
4.5V
4.7K
RSTB
VS
0.1uF
Note :
PB0 to PB2 are set to input
C1 = 0.1uF to 2.2uF depend on the kind of power supply.
Output driving of HT LDO:
HT7136 (30mA, 3.6V)
HT7133 (30mA, 3.3V)
HT7536 (100mA, 3.6V)
HT7335 (250mA, 3.5V)
Using 4.5V Battery
6
Oct 12, 2009
APLUS [ APLUS INTERGRATED CIRCUITS ]
