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BU2090F-E2 View Datasheet(PDF) - ROHM Semiconductor

Part NameBU2090F-E2 ROHM
ROHM Semiconductor ROHM
DescriptionSerial / Parallel 2-input Drivers
BU2090F-E2 Datasheet PDF : 13 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
BU2098F, BU2090F, BU2090FS
Data transmission timing
Technical Note
SDA S A6 A5 A4 A3 A2 A1 A0 R/W ACK D7 D6 D5 D4 D3 D2 D1 D0 ACK P
Slave address
Write data
Latch pulse
Output (Q7Q0)
Output the write data to Q7Q0 at the same time.
Fig.5 Timing chart for WRITE
Command sample for driving LEDs. These are all off. (terminal A0A2 is open)
Power Supply ON
LEDs all-ON with power supply ON
SDA
S
0
1
1
1
1
1
1
0 ACK 1
1
1
1
1
1
1
1 ACK P
Slave address
Write data
LEDs are all-off by this command.
RESET CONDITION
After reset, Q0Q7 pins are ON. (LEDs are all ON.)
RISING TIME OF POWER SUPPLY
VDD must rise within 10ms. If the rise time would exceed 10ms, it is afraid not to reset the BU2098F.
VDD
GND
t10ms
Fig.6 Rising time of power supply
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
8/12
2009.06 - Rev.A
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