PCF8591_03 PHILIPS [NXP Semiconductors], PCF8591_03 Datasheet - Page 14

• Manufacturer Part Number: PCF8591_03
• Description: 8-bit A/D and D/A converter
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
8.5
After a start condition a valid hardware address has to be sent to a PCF8591 device. The read/write bit defines the
direction of the following single or multiple byte data transfer. For the format and the timing of the start condition (S), the
stop condition (P) and the acknowledge bit (A) refer to the I
terminated by sending either a stop condition or the start condition of the next data transfer.
2003 Jan 27
handbook, full pagewidth
handbook, full pagewidth
8-bit A/D and D/A converter
I
2
C-bus protocol
S
S
ADDRESS
ADDRESS
Fig.17 Bus protocol for read mode, A/D conversion.
Fig.16 Bus protocol for write mode, D/A conversion.
0
1
from PCF8591
from PCF8591
acknowledge
acknowledge
A
A
CONTROL BYTE
DATA BYTE
N = 0 to M
data bytes
14
2
from PCF8591
C-bus characteristics. In the write mode a data transfer is
acknowledge
acknowledge
from master
A
A
DATA BYTE
LAST DATA BYTE
N = 0 to M
data bytes
from PCF8591
acknowledge
A
no acknowledge
P/S
1
MBL833
MBL834
Product specification
P
PCF8591