OM13285,598 NXP Semiconductors, OM13285,598 Datasheet - Page 2

• Manufacturer Part Number: OM13285,598
• Description: Power Management IC Development Tools PCA9629 I2C demoboard & kit
• Manufacturer: NXP Semiconductors
• Type: Motor / Motion Controllers & Driversr

Specifications of OM13285,598

• Product: Demonstration Boards
• Tool Is For Evaluation Of: PCA9629

Write data
Read data
By replacing complex parallel interfaces with a straightforward yet powerful serial
structure, the I
Invented by NXP (Philips) more than 30 years ago, the I
format to carry data one bit at a time. It performs inter-chip addressing, selection,
control, and data transfer. Speeds are up to 400 kHz (Fast-mode), 1 MHz (Fast-mode
Plus), 3.4 MHz (High Speed-mode), or 5 MHz (Ultra Fast-mode).
The I
copper traces are needed, it enables a smaller PCB, reduces design complexity, and
lowers system cost.
I
address pins set high (1) or low (0). Information is transmitted byte by byte, and each byte is acknowledged by the receiver.
There can be multiple devices on the same bus, and more than one IC can act as master. The master role is typically played by a
microcontroller.
S = Start condition
A = Acknowledge
2
C-bus devices are available in a wide range of functions. Each slave device has its own I
S
S
2
C-bus shrinks the IC footprint and leads to lower IC costs. Plus, since far fewer
slave address
slave address
2
C-bus revolutionized chip-to-chip communications.
R/W = read/write
A = Not acknowledge P = Stop condition
MCU
W
R
A
A
<
< n data >
I
data
data
2
I/O
bytes
C-bus: The serial revolution
n data bytes
A
A
data
data
last data byte
A/D
D/A
A
A
2
>
C-bus uses a simple two-wire
P
P
LCD
Master
New function address
1010A
transmitter
receiver
2
A
1
A
0
R/W
RTC
The master always sends the clock
A
A
A
2
C-bus address, selectable using
0
1
2
Parallel Interface
function
SDA
SCL
SDA
SCL
New
Slave
New function address
1010011 R/W
transmitter
as assigned
MCU
receiver
I
2
uC
C Serial Interface
SDA
SCL