BU9929FV Rohm Semiconductor, BU9929FV Datasheet - Page 10

• Manufacturer Part Number: BU9929FV
• Description: IC I/O EXPANDER I2C 16B 28SSOP
• Manufacturer: Rohm Semiconductor

Specifications of BU9929FV

• Interface: I²C
• Number Of I /o: 16
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -15°C ~ 75°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Multimedia ICs
3）INT pin specification
When condition watching mode, INT output pin works for reporting of detection of watching port.
(a) When command D6=0(including default time after RESET release)
INT pin falls when detection of watching port is received. And INT pin rises after ACK-output which is on the I
read.
In the case that there is a change in detection ports once, and there are another changes before returning the ACK (as
shown “A term”), then watching data is saved. And the output data in this case will be “AND” output of every bits of the
watching data.
Watching Ports
CLK
Output for I
INT OUTPUT
Watching Ports
Output for I
CLK
INT OUTPUT
2
2
C BUS
C BUS
F6
F8
C7
St
A4
St
" A term"
SLAVE ADDRESS
SLAVE ADDRESS
R
A
A
OUTPUT "84"
OUTPUT "84hex data" which
is the result of AND data
for "F6", "C7" and " A4".
OUTPUT "F8"
BU9929FV
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2
C Data