- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382378 > PCA9501 (NXP Semiconductors N.V.) 8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins PDF資料下載
參數(shù)資料
| 型號(hào)： | PCA9501 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins |
| 中文描述： | 8位I2C和SMBus I / O口的中斷，2千比特的EEPROM和6個(gè)地址引腳 |
| 文件頁數(shù)： | 11/22頁 |
| 文件大?。?/td> | 146K |
| 代理商： | PCA9501 |
Philips Semiconductors
8-bit I
2
C and SMBus I/O port with interrupt,
2-kbit EEPROM and 6 address pins
Product data
PCA9501
2003 Sep 12
11
CHARACTERISTICS OF THE I
2
C-BUS
The I
2
C-bus is for 2-way, 2-line communication between different ICs
or modules. The two 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.
Bit transfer
One data bit is transferred during each clock phase. 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 Figure 16).
Start and stop conditions
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 Figure 17).
System configuration
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 Figure 18).
SDA
SCL
SW00542
DATA LINE
STABLE;
DATA VALID
CHANGE
OF DATA
ALLOWED
Figure 16. Bit transfer
SDA
SCL
P
SDA
SCL
S
SW00543
START CONDITION
STOP CONDITION
Figure 17. Definition of start and stop conditions
SDA
SCL
SW00544
MASTER
TRANSMITTER/
RECEIVER
SLAVE
RECEIVER
SLAVE
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER
MASTER
TRANSMITTER/
RECEIVER
Figure 18. System configuration
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9513DP | Hot swappable IC and SMBus bus buffer |
| PCA9514D | Hot swappable IC and SMBus bus buffer |
| PCA9514DP | Hot swappable IC and SMBus bus buffer |
| PCA9513 | Hot swappable IC and SMBus bus buffer |
| PCA9513D | Hot swappable IC and SMBus bus buffer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9501A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart, simple solutions for the 12 most common design concerns |
| PCA9501BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins |
| PCA9501BS,118 | 功能描述:接口-I/O擴(kuò)展器 8BIT I2C FMQB GPIONT RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9501BS,118-CUT TAPE | 制造商:NXP 功能描述:8-bit 8 I/O I2C-bus Expander On Board 2 kb EEPROM Surface Mount - HVQFN-20 |
| PCA9501BS-T | 功能描述:接口-I/O擴(kuò)展器 8BIT I2C FMQB GPIONT PU2K EPR RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。