BU21077MUV Datasheet, PDF (6/16 Pages) Rohm – Capacitive Switch Controller IC

BU21077MUV
●Byte Write
S Slave Address W A Register Address A Write Data
AS
T =0x5C
R C (n)
C to Register
CT
A
IK
K (Register Address K O
R
T
=n)
P
T
E
SSSSSSS
R R R R R R R R WWWWWWWW
AAAAAAA
AAAAAAAA DDDDDDDD
6543210
76543210 76543210
SA : Slave Address
RA : Register Address
RD : Read Data
WD : Write Data
●Random Read
S Slave Address W A Register Address A S Slave Address R A Read Data
NS
T =0x5C
R C (n)
C T =0x5C
E C from Register
AT
A
IK
KA
A K (Register Address C O
R
T
R
D =n)
KP
T
E
T
SSSSSSS
RRRRRRRR
SSSSSSS
RRRRRRRR
AAAAAAA
AAAAAAAA
AAAAAAA
DDDDDDDD
6543210
76543210
6543210
76543210
●Sequential Read
S Slave Address W A Register Address A S Slave Address R A Read Data
A
T =0x5C
R C (n)
C T =0x5C
E C from Register
C
A
IK
KA
A K (Register Address K
R
T
R
D =n)
T
E
T
SSSSSSS
RRRRRRRR
SSSSSSS
RRRRRRRR R
AAAAAAA
AAAAAAAA
AAAAAAA
DDDDDDDD D
6543210
76543210
6543210
76543210 7
A Read Data
NS
C from Register
AT
K (Register Address C O
=n+x)
KP
R RRRRRRRR
D DDDDDDDD
0 76543210
Figure 9. 2-wire Serial Bus Protocol
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TSZ22111・15・001
6/12
TSZ02201-0L5L0F300820-1-2
14.Jul.2016 Rev.002