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BM81810MUF-M 데이터시트(PDF) 35 Page - Rohm

부품명 BM81810MUF-M
부품 상세설명  Automotive Panel Power Management IC
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제조업체  ROHM [Rohm]
홈페이지  http://www.rohm.com
Logo ROHM - Rohm

BM81810MUF-M 데이터시트(HTML) 35 Page - Rohm

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TSZ02201-0A3A0AS00510-1-2
© 2020 ROHM Co., Ltd. All rights reserved.
15.May.2020 Rev.001
TSZ22111
• 15 • 001
www.rohm.com
Serial communication
This IC has two device-address-differential EEPROM installed and data is send or received to/from EEPROM using 2-line serial
interface (SCL, SDA). Communication format for data sending or receiving to/from each EEPROM is shown below.
EEPROM I2C Format for DVR (VCOM calibrator)
When Device Address = 1001111(R/W) is selected, Data is Read or Write EEPROM for DVR(VCOM calibrator).
During Write mode
When P=1, the sending data is written only to Register.
When WPN=Low and P=0, the sending data is written only to Register.
When WPN=High and P=0, the sending data is written both to Register and EEPROM.
During Read mode
The last bit of received data is “Don’t care”.
“D6” is ± select bit: 0 = “+”, 1=”-” from VCOM(HOT) value.
[D5:D0] are voltage band from VCOM(HOT).
The voltage band is calculated; 10mV x [D5:D0],
For example,
[D6:D0,P] = 82h(D6=1, [D5:D0]=1
’d, P=0) ••• VCOM = VCOM(HOT) – 1 x 10mV;
[D6:D0,P] = 7Eh(D6=0, [D5:D0]=63
’d, P=0) ••• VCOM = VCOM(HOT) + 63 x 10mV;
Sequence of DVR side EEPROM during Read/Write mode is shown in below chart.
R/W
ACK
ACK
1
0
0
1
1
1
1
0
0
D6
D5
D4
D3
D2
D1
D0
P
0
R/W
ACK
ACK
1
0
0
1
1
1
1
1
0
D6
D5
D4
D3
D2
D1
D0
X
1
DATA
STOP
DATA
STOP
Device address
Device address
Write
operation
Read
operation
Start
Start
Figure 70
Figure 71


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