I2C-bus: The serial revolution By replacing complex parallel interfaces with a s" />
參數(shù)資料
型號: PCF2116AU/10,005
廠商: NXP Semiconductors
文件頁數(shù): 2/8頁
文件大?。?/td> 0K
描述: IC LCD CTLR/DRIVER UNCASED FFC
標(biāo)準(zhǔn)包裝: 375
系列: *
I2C-bus: The serial revolution
By replacing complex parallel interfaces with a straightforward yet powerful serial
structure, the I2C-bus revolutionized chip-to-chip communications.
Invented by NXP (Philips) more than 30 years ago, the I2C-bus uses a simple two-wire
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 I2C-bus shrinks the IC footprint and leads to lower IC costs. Plus, since far fewer
copper traces are needed, it enables a smaller PCB, reduces design complexity, and
lowers system cost.
SDA
SCL
uC
A0
A1
1010A2A1A0R/W
A2
New function address
1010011 R/W
New function address
as assigned
New
function
MCU
RTC
LCD
I/O
A/D
D/A
I2C-bus devices are available in a wide range of functions. Each slave device has its own I2C-bus address, selectable using
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.
Parallel Interface
I2C Serial Interface
Master
Write data
Slave
SDA
SCL
transmitter
P
W
S
data
slave address
data
A
receiver
SDA
SCL
transmitter
receiver
Read data
P
R
S
data
slave address
data
A
<
n data bytes
>
last data byte
S = Start condition
R/W = read/write
A = Acknowledge
A = Not acknowledge P = Stop condition
The master always sends the clock
< n data >
bytes
相關(guān)PDF資料
PDF描述
LD6806CX4/36P,315 IC REG LDO 200MA 3.6V 4WLCSP
AB11AV SWITCH PUSH SPST-NO 0.4VA 28V
CPPT8-HZ0RT OSC 5.0V PROG TTL TRI ST 25PPM
MB2411E1W40-FA SWITCH PUSHBUTTON SPDT 3A 125V
LD6806CX4/33P,315 IC REG LDO 200MA 3.3V 4WLCSP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF2116CHZ 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:LCD controller/drivers
PCF2116CU 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
PCF2116CU/10 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:LCD controller/drivers
PCF2116CU/10/F1,00 功能描述:IC LCD CTLR/DRIVER UNCASED RoHS:是 類別:未定義的類別 >> 其它 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* 其它名稱:MS305720A
PCF2116CU/10/F1,005 制造商:NXP Semiconductors 功能描述: