PCA9535ECDWR2G ON Semiconductor, PCA9535ECDWR2G Datasheet - Page 14
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PCA9535ECDWR2G
Manufacturer Part Number
PCA9535ECDWR2G
Description
Interface - I/O Expanders 16-BIT I/O EXPANDER
Manufacturer
ON Semiconductor
Datasheet
1.PCA9535ECDWR2G.pdf
(20 pages)
Specifications of PCA9535ECDWR2G
Rohs
yes
Logic Family
PCA9535
Number Of I/os
16
Maximum Operating Frequency
400 KHz
Operating Supply Voltage
1.65 V to 5.5 V
Operating Temperature Range
- 55 C to + 125 C
Mounting Style
SMD/SMT
Package / Case
SOIC-24
Interface Type
I2C, SMBus
Interrupt Output
Yes
Operating Current
1.65 V to 5.5 V
Output Current
50 mA
Power Dissipation
600 mW
Product Type
I/O Expanders
Characteristics of the I
between different ICs or modules. The two lines are the
serial data line (SDA) and the 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 only be initiated when the bus is not busy.
START and STOP conditions
not busy. A START condition (S) occurs when there is a
HIGH−to−LOW transition of the data line while the clock is
The I
Both data and clock lines remain HIGH when the bus is
Figure 12. High Value Resistor in Parallel
2
C−bus is meant for 2−way, 2−line communication
SDA
SCL
V
DD
LEDn
START condition
with the LED
2
SDA
SCL
C−bus
S
Figure 15. Definition of START and STOP Conditions
LED
100 kW
V
DD
data valid
data line
stable;
Figure 14. Bit Transfer
http://onsemi.com
14
allowed
change
of data
Bit transfer
data on the SDA line must remain stable during the HIGH
period of the clock pulse. Changes in the data line during the
HIGH period of the clock pulse will be interpreted as control
signals (see Figure 14).
HIGH. A STOP condition (P) occurs when there is a
LOW−to−HIGH transition of the data line while the clock is
HIGH (see Figure 15).
One data bit is transferred during each clock pulse. The
Figure 13. Device Supplied by a Lower Voltage
3.3 V
V
STOP condition
DD
LEDn
P
5 V
LED
SDA
SCL