C1853CT NEC, C1853CT Datasheet - Page 19

• Manufacturer Part Number: C1853CT
• Description: Search -----> UPC1853CT
• Manufacturer: NEC

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from MSB first.
composed of 7 bits.
because the PC1853 has write mode only.
to the subaddress follows this subaddress byte.
continuously to the next subaddress. Use this function for initializing and so on. In the case of changing the data
continuously of one subaddress (adjustment and so on), set the automatic increment function OFF (see 4.4.1(8)
Automatic increment function).
3.2.1 1 byte data transfer
SDA
SCL
Remark W: Write mode, ACK: Acknowledge bit
Data is composed of 8 bits. Acknowledge bit is always added after this 8 bits data. Data should be transferred
The 1 byte immediately after start condition specifies the slave address (chip address). This slave address is
Table 3-1 is the slave address of the PC1853. This slave address is registered by Phillips.
The remaining 1 bit is the read/write bit which specifies the direction of the data transferred after that. Set “0”
The byte following the slave address is subaddress byte of the PC1853.
The PC1853 has 9 subaddresses from SA
The PC1853 has automatic increment function. This function increments subaddress automatically in write mode.
By using automatic increment function, once slave address and subaddress are set, data can be transferred
The following is the format in the case of transferring 1 byte data.
Remark STA: Start, W: Write mode, ACK: Acknowledge bit, STP: Stop
S
T
A
SLAVE
ADDRESS
D6 D5 D4 D3 D2 D1 D0 W
User can set bit D1 freely.
0: Bias voltage of ADS (pin 22) is GND.
1: Bias voltage of ADS (pin 22) is 5 V.
W
Slave address
Bias Voltage of ADS (Pin 22)
C
A
K
SUB
ADDRESS
Fig. 3-4 Example of Data Transfer in Write Mode
GND
5V
Table 3-1 Slave Address of PC1853
ACK
A
C
K
D7
0
to SA
D6 D5 D4 D3 D2 D1 D0
DATA
8
Subaddress
, and each of them is composed of 8 bits. The data to be set
D6
1
1
A
C
K
D5
0
0
S
P
T
D4
0
0
Slave address
ACK
D3
D7
0
0
D6 D5 D4 D3 D2 D1 D0
D2
1
1
Data
D1
1
0
D0
0
0
ACK
PC1853
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