SX8724C Datasheet, PDF (40/67 Pages) Semtech Corporation – ZoomingADC for sensing data acquisition

ADVANCED COMMUNICATIONS & SENSING
9.4 I2C Register Access
9.4.1 Writing a Register
SX8724C
ZoomingADC for sensing data acquisition
DATASHEET
S
W
T
R
A
I
R DEVICE T
T ADDRESS E
REGISTER
ADDRESS
S
T
REGISTER
VALUE
O
P
SDA
M
LA
A
A
S
SC
C
C
B
BK
K
K
Figure 22. I2C timing diagram for writing to a register
9.4.2 Reading in a Register
R
E
S
W
T
R
A
I
R DEVICE T
T ADDRESS E
REGISTER
ADDRESS
S
T
A
R
T
DEVICE
ADDRESS
R
E
A
D
REGISTER
VALUE (n)
S
T
O
P
SDA
M
LA
A
S
SC
C
B
BK
K
A
N
C
O
K
A
C
K
Figure 23. I2C timing diagram for reading from a register
9.4.3 Writing in Several Consecutive Registers
S
W
T
R
A
I
R DEVICE T
T ADDRESS E
REGISTER
ADDRESS
REGISTER
VALUE (n)
REGISTER
VALUE (n + x - 1)
S
T
REGISTER
VALUE (n + x)
O
P
SDA
M
LA
A
A
A
A
S
SC
C
C
C
C
B
BK
K
K
K
K
Figure 24. I2C timing diagram for multiple writing to registers
Revision 1.01
© Semtech
January 2011
Page 40
www.semtech.com/products/