BD8105FV Просмотр технического описания (PDF) - ROHM Semiconductor
Номер в каталоге
Компоненты Описание
Список матч
BD8105FV Datasheet PDF : 13 Pages
| |||
BD8105FV
Technical Note
●Serial Communication
The serial I/F is composed of a shift register which changes the CLK and SERIN serial signals to parallel signals, and a
register to remember those signals with a LATCH signal. The registers are reset by applying a voltage under VCC×0.2 to
the RST_B terminal or opening it, and D11~D0 become open. To prevent erroneous LED lighting, please apply voltage
under VCC×0.2 to RST_B or make it open during start-up.
CLK
SERIN
LATCH
Shift
12bit
Register
Register
12bit
Driver
Fig.13
1）Serial Communication Timing
The 12-bit serial data input from SERIN is taken into the shift register by the rise edge of the CLK signal, and is
recorded in the register by the rise edge of the LATCH signal. The recorded data is valid until the next rise edge of the
LATCH signal.
2）Serial Communication Data
The serial data input configuration of SERIN terminal is shown below:
First →
→Last
d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0
Data
Terminal Output
Data
Name Status d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0
D11
ON
OFF
1* * * * * * * * * * *
0* * * * * * * * * * *
D10
ON
OFF
*1* * * * * * * * * *
*0* * * * * * * * * *
D9
ON
OFF
* *1* * * * * * * * *
* *0* * * * * * * * *
D8
ON
OFF
* * *1* * * * * * * *
* * *0* * * * * * * *
D7
ON
OFF
* * * *1* * * * * * *
* * * *0* * * * * * *
D6
ON
OFF
* * * * *1* * * * * *
* * * * *0* * * * * *
D5
ON
OFF
* * * * * *1* * * * *
* * * * * *0* * * * *
D4
ON
OFF
* * * * * * *1* * * *
* * * * * * *0* * * *
D3
ON
OFF
* * * * * * * *1* * *
* * * * * * * *0* * *
D2
ON
OFF
* * * * * * * * *1* *
* * * * * * * * *0* *
D1
ON
OFF
* * * * * * * * * *1*
* * * * * * * * * *0*
D0
ON
OFF
* * * * * * * * * * *1
* * * * * * * * * * *0
* represents “Don’t care”.
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
6/12
2009.07 - Rev.B
Share Link: 