BU9929FV Rohm Semiconductor, BU9929FV Datasheet - Page 7

• 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
1. Data write mode
Command register : At reset, D0 to D7 are ”0”.
SHT DWN
St SLAVE ADDRESS W
D7
D7 : Shut Down mode
D6 : INT output method choice
D5 : Detection result output choice
D4 : Output port writing set
D3 : I / O direction set
D2 : Watching object input choice
D1 : Change detection mode
D0 : Input port condition watching mode
0 : Shut down mode off (Normal operation mode)
1 : Shut down mode on
0 : LOW output
1 : Output of LOW pulse equivalent for one period of CLK
0 : Serial output. INT pin is also valid.
1 : Serial output (I
0 : Writing invalid
1 : Writing valid. But, a port, which is indicated as input, is invalid.
0 : Direction set invalid
1 : Direction set valid
0 : PION0 to PION7
1 : PION8 to PIO15
0 : Falling edge
1 : Both rising and falling edge
0 : Invalid
1 : Valid
INT SEL
D6
Following Write data 2byte-0 : input, 1 : output
Following Write data 2byte-0 : “L” output, 1 : “H” output
DOUT SEL
D5
A COMMAND BYTE A
2
C MASTER function) off. Only INT pin is valid.
OUT ON
D4
DIR ON
PION7 − PION0
D3
WRITE DATA 1
BYTE SEL
D2
EDGE SEL
A
D1
PIO15 − PIO8
WRITE DATA 2
DET ON
D0
A Sp
BU9929FV
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