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PDF BU9929FV Data sheet ( Hoja de datos )
| Número de pieza | BU9929FV | |
| Descripción | I2C BUS interface | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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BU9929FV
Multimedia ICs
I2C BUS interface, general purpose I/O
ports with condition watching function
BU9929FV
ROHM’s GPIO is a general-purpose IO that contains I2C 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 I2C BUS.
!Applications
Notebook PC, PC, VCR, TV etc. and other systems with I2C BUS.
!Features
1) I2C BUS interface
2) General purpose I/O port 16bits
3) State monitoring function to monitor all terminals
4) State detection signal serial output by I2C 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
Supply voltage
VDD
7.0
Power dissipation
Pd
640
Operating temperature
Topr
−15 to +75
Storage temperature
Tsig
−55 to +125
Terminal supply voltage
VIN
GND−0.5 to VDD+0.5
∗Temperature derating : 6.4mW/˚C over Ta=25˚C
Radiation resistance is not included in the design.
Rohm CO., Ltd is a licensee of I2C BUS from Philips Semiconductors.
!Recommended operating conditions (Ta=25°C)
Parameter
Min.
Operating supply voltage range 3.0
Typ.
−
Max.
5.5
Unit
V
Unit
V
mW
˚C
˚C
V
1/11
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Multimedia ICs
!Electrical characteristics (Unless otherwise noted, VDD=5.0V, Ta=25°C)
Parameter
Circuit current (Normal)
Circuit current (Shut down mode)
"H" Level input voltage 1
"L" Level input voltage 1
"H" Level input voltage 2
Symbol
IDD
IDS
VIH1
VIL1
VIH2
Min.
−
−
VDD×0.7
−0.5
2.5
Typ.
6.0
0.1
VDD
0.0
VDD
Max.
30
2.0
VDD+0.5
VDD×0.3
VDD+0.5
Unit
µA
µA
V
V
V
Conditions
CLK=32.768Hz
Shut Down Mode
"L" Level input voltage 2
VIL2 −0.5 0.0 0.8
V
"H" Level input voltage 3
VIH3 2.5 VDD 5.5 V
"H" Level input Current
IIH 2.0 0.0 1.0 µA
"L" Level input Current
"H" Level output voltage
"L" Level output voltage 1
"L" Level output voltage 2
I2C Fall time
IIL
VSOH
VSOL
VCOL
TFIC
−1.0 0.0
−
4.4 4.8 5.0
0.0 0.2 0.6
0.0 0.2 0.6
− 100 250
µA
V IOH=4mA
V IOL=4mA
V IOL=6mA
IOL=6mA
ns
CL=400pF
BU9929FV
Test Pin No.
28
28
1, 2
1, 2
3, 4, 15-17
3-5, 11, 13
15-27
5-11, 13
3-5, 11, 13
15-27
3-5, 11, 13
15-27
18-25
5-13, 18-25
1, 2
1, 2
5/11
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Multimedia ICs
BU9929FV
(b) When command D6=1
INT pin outputs ”I clock cycle pulse” when detection of watching port is received. In the case that the output data is the
data whish is sampled immediately before the returning ACK.
Watching Ports
78 AA
Output for I2C BUS
CLK
INT OUTPUT
St SLAVE ADDRESS
R A OUTPUT "AA"
Data "78h" is not kept, the
output data is immediately
before sampled data.
CLK 1 cycle pulse
4. Shut down mode
By command D7=1, this IC can be set to Shut down mode, which can save current consumption. At Shut down mode,
operation of CLK input pin will be stopped, and input of CLK into this IC can be shut down. Also, for every PIO/PION pins,
pins under output condition will be saved as Hi-Z.
At Shut down mode, condition-watching function can not be used.
Contents of each register before shut down will be saved by the shut down release.
!External dimensions (Unit : mm)
10.0±0.2
28 15
1 14
0.65 0.22±0.1
0.3Min.
SSOP-B28
0.1
11/11
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11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet BU9929FV.PDF ] | |
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