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BM81810MUF-M 데이터시트(PDF) 36 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) 36 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 - continued
EEPROM I2C Format for Power Management IC (PMIC)
Device Address of BM81810MUF-M is 1000 000x.
Multi write is possible until Register 00h to 0Dh.
* In the mass production shipment process, please write Start-up ( 0Ch[7] ) to "1" in EEPROM.
The following are the settings if you want to send the Data by I2C.
Restart?
Device Address?
1000_0000
Input data to register
Write
Yes
Device Address
WPN
Write data to EEPROM
End process
Output register data
High
Low
Receive register address
No
Read
1000_0001
WPN Timing
WPN is normally fixed as Low.
In case of writing to EEPROM, WPN is set to High, and the timing will be as below.
Because the maximum of the auto-read time from EEPROM is 5ms, please between EN signal and I2C input than 5ms.
Also, because the maximum of writing time to EEPROM is 50ms, please between I2C STOP signal and EN falling signal
than 50ms.
EN
WPN
Start-up( 0Ch[7] )
PMIC ( 00h to 0Dh)
Output Function
1
Low
Low
-
-
Shutdown
2
High
Low
-
Register
Active
3
High
High
0*
Register &
EEPROM
Shutdown
4
High
High
1
Register &
EEPROM
Active
Figure 72
Figure 73
R/W ACK
ACK
ACK
1
0
0
0
0
0
0
0
0
0
0
R/W ACK
ACK
ACK
ACK
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
1
Write
operation
Start
Device address
Register Address
00h ~ 0Dh, 10h, 11h
Read
operation
Start
Device address
Register Address
00h ~ 0Dh, 10h, 11h
N-bytes Data
N-bytes Data
Device Address
Stop
Stop
Repeated
Start
VIN
WPN
EEPROM Data
Auto Read
> 5msec
S
T
A
R
T
Device
Address
A
C
K
Register
Address
A
C
K
DATA
A
C
K
DATA
A
C
K
DATA
A
C
K
S
T
O
P
・・・・・
EEPROM Write Time
> 50msec
tSU;WPN
> 0usec
SCL
SDA
tHD;WPN
> 10usec
EN


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