Reading and writing to the STCF04 registers through the I²C bus

AN3223

24/29

Doc ID 17553 Rev 2

reading from the next register can start immediately without having to once again send the

device and the register addresses. The last acknowledge pulse before the STOP-bit is not

required. See

Figure 16 below.

Figure 16.

Reading from multiple registers

AM07810v1

S

T

A

R

T

DEVICE

ADDRESS

7 bits

A

C

K

W

R

I

T

E

M

S

B

L

S

B

R

/

W

ADDRESS OF

REGISTER i

A

C

K

M

S

B

L

S

B

S

T

A

R

T

A

C

K

R

/

W

R

E

A

D

DEVICE

ADDRESS

7 bits

DATA i

A

C

K

S

T

O

P

L

S

B

DATA i+1

A

C

K

L

S

B

DATA i+2

A

C

K

L

S

B

DATA i+2

L

S

B

DATA i+n

M

S

B

M

S

B

M

S

B

M

S

B

A

C

K

L

S

B

N

O

A

C

K

SDA LINE

S

T

A

R

T

DEVICE

ADDRESS

7 bits

A

C

K

W

R

I

T

E

M

S

B

L

S

B

R

/

W

ADDRESS OF

REGISTER i

A

C

K

M

S

B

L

S

B

S

T

A

R

T

A

C

K

R

/

W

R

E

A

D

DEVICE

ADDRESS

7 bits

DATA i

A

C

K

S

T

O

P

L

S

B

DATA i+1

A

C

K

L

S

B

DATA i+2

A

C

K

L

S

B

DATA i+2

L

S

B

DATA i+n

M

S

B

M

S

B

M

S

B

M

S

B

A

C

K

L

S

B

N

O

A

C

K

SDA LINE