PCA9665PW/S911,118 NXP Semiconductors, PCA9665PW/S911,118 Datasheet - Page 66
PCA9665PW/S911,118
Manufacturer Part Number
PCA9665PW/S911,118
Description
IC CNTRLR PARALLEL/I2C 20TSSOP
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9665PWS911118.pdf
(90 pages)
Specifications of PCA9665PW/S911,118
Controller Type
I²C Bus Controller
Interface
I²C
Voltage - Supply
2.3 V ~ 3.6 V
Current - Supply
100µA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
935285487118
PCA9665PW/S911-T
PCA9665PW/S911-T
PCA9665PW/S911-T
PCA9665PW/S911-T
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NXP Semiconductors
9. Characteristics of the I
PCA9665_3
Product data sheet
9.1.1 START and STOP conditions
9.1 Bit transfer
9.2 System configuration
The I
lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be
connected to a positive supply via a pull-up resistor when connected to the output stages
of a device. Data transfer may be initiated only when the bus is not busy.
One data bit is transferred during each clock pulse. The data on the SDA line must remain
stable during the HIGH period of the clock pulse as changes in the data line at this time
will be interpreted as control signals (see
Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW
transition of the data line while the clock is HIGH is defined as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition (P) (see
A device generating a message is a ‘transmitter’; a device receiving is the ‘receiver’. The
device that controls the message is the ‘master’ and the devices which are controlled by
the master are the ‘slaves’ (see
Fig 29. Bit transfer
Fig 30. Definition of START and STOP conditions
2
C-bus is for 2-way, 2-line communication between different ICs or modules. The two
SDA
SCL
START condition
2
SDA
SCL
Figure
C-bus
S
Rev. 03 — 12 August 2008
30).
Figure
data valid
data line
stable;
31).
Figure
allowed
change
of data
29).
Fm+ parallel bus to I
STOP condition
mba607
P
PCA9665
© NXP B.V. 2008. All rights reserved.
2
C-bus controller
mba608
SDA
SCL
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