BU9929FV
Multimedia ICs
1/11
I
2
C BUS interface, general purpose I/O
ports with condition watching function
BU9929FV


ROHM’s GPIO is a general-purpose IO that contains I
2
C BUS interface. It also contains monitoring function that conveys
a change of the signal level in terminal to the host system via interrupt terminal or I
2
C BUS.


!Applications
Notebook PC, PC, VCR, TV etc. and other systems with I
2
C BUS.


!Features
1) I
2
C BUS interface
2) General purpose I/O port 16bits
3) State monitoring function to monitor all terminals
4) State detection signal serial output by I
2
C BUS master function
5) Output port of state detection signal
6) State detection ON/OFF setting input port during the default status
7) 32.768kHz clock input
8) Power supply voltage 3.3V / 5.0V


!Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit
Supply voltage
Power dissipation
Operating temperature
Storage temperature
Terminal supply voltage
VDD
Pd
Topr
Tsig
VIN
7.0
640
−15 to +75
−55 to +125
GND−0.5 to VDD+0.5
V
mW
˚C
˚C
V
∗Temperature derating : 6.4mW/˚C over Ta=25˚C
Radiation resistance is not included in the design.
Rohm CO., Ltd is a licensee of I
2
C BUS from Philips Semiconductors.



!Recommended operating conditions (Ta=25°C)
Parameter Min. Typ. Max. Unit
Operating supply voltage range − 5.53.0 V