STEVAL-TLL004V1 STMicroelectronics, STEVAL-TLL004V1 Datasheet - Page 17

• Manufacturer Part Number: STEVAL-TLL004V1
• Description: BOARD EVAL FLASH DRIVER STCF03
• Manufacturer: STMicroelectronics

Specifications of STEVAL-TLL004V1

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8431

STCF03
Table 8.
7.8
Figure 9.
7.9
S
A
R
T
T
M
S
B
7
Device address + R/W bit
6
5
Interface protocol
Writing to a single register
Writing to a single register starts with a START bit followed by the 7 bit device address of
STCF03. The 8
operation. Then the master waits for an acknowledge from STCF03. Then the 8 bit address
of register is sent to STCF03. It is also followed by an acknowledge pulse. The last
transmitted byte is the data that is going to be written to the register. It is again followed by
an acknowledge pulse from STCF03. Then master generates a STOP bit and the
communication is over. See
Writing to a single register
Interface protocol
The interface protocol is composed:
4
– A start condition (START)
– A Device address + R/W bit (read =1 / write =0)
– A Register address byte
– A sequence of data n* (1 byte + acknowledge)
– A stop condition (STOP)
S
S
S
A
A
A
R
R
R
T
T
T
T
T
T
3
M
M
M
S
S
S
B
B
B
2
ADDRESS
ADDRESS
ADDRESS
DEVICE
DEVICE
DEVICE
7 bits
7 bits
7 bits
S
B
1
L
th
W
R
0
bit is the R/W bit, which is 0 in this case. R/W = 1 means a reading
C
A
K
B
B
B
L
L
L
S
S
S
W
W
W
M
R
R
R
S
B
7
/
/
/
W
W
W
R
R
R
T
T
T
E
E
E
I
I
I
A
A
A
C
C
C
K
K
K
6
Figure 9
M
M
M
B
B
B
S
S
S
Register address
SDA LINE
SDA LINE
Doc ID 13169 Rev 7
5
ADDRESS OF
ADDRESS OF
ADDRESS OF
REGISTER
REGISTER
REGISTER
4
below.
3
2
1
L
L
L
S
S
S
B
B
B
A
A
A
A
A
A
C
C
C
C
C
C
K
K
K
K
K
K
S
B
0
L
M
M
M
S
S
S
B
B
B
C
A
K
M
S
B
7
DATA
DATA
DATA
6
5
4
Data
S
S
S
B
B
B
L
L
L
A
A
A
C
C
C
K
K
K
3
O
O
O
S
S
S
T
T
T
P
P
P
2
Introduction
1
S
B
0
L
C
A
K
17/35
O
S
T
P