PCA9672PW,112 NXP Semiconductors, PCA9672PW,112 Datasheet - Page 12

IC I/O EXPANDER I2C 8B 16TSSOP

PCA9672PW,112

Manufacturer Part Number
PCA9672PW,112
Description
IC I/O EXPANDER I2C 8B 16TSSOP
Manufacturer
NXP Semiconductors
Datasheet

Specifications of PCA9672PW,112

Interface
I²C
Number Of I /o
8
Interrupt Output
Yes
Frequency - Clock
1MHz
Voltage - Supply
2.3 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP
Includes
POR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-4196-5
935282747112
PCA9672PW
NXP Semiconductors
9. Characteristics of the I
PCA9672_2
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 15. Bit transfer
Fig 16. 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
Remote 8-bit I/O expander for Fm+ I
Figure
C-bus
S
Rev. 02 — 6 July 2007
16.)
Figure
data valid
data line
stable;
17).
Figure
allowed
change
of data
15).
2
C-bus with interrupt and reset
STOP condition
mba607
P
PCA9672
© NXP B.V. 2007. All rights reserved.
mba608
SDA
SCL
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