参数资料
| 型号： | PCA9501PW,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 3/28页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 20TSSOP |
| 标准包装： | 2,500 |
| 接口： | I²C，SM 总线 |
| 输入/输出数： | 8 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 2.5 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
| 包括： | EEPROM |
| 配用： | 568-4002-ND - DEMO BOARD I2C |
| 其它名称： | 935271535118 PCA9501PW-T PCA9501PW-T-ND |
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PCA9501_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 10 February 2009
11 of 28
NXP Semiconductors
PCA9501
8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM
8.
Characteristics of the I2C-bus
The I2C-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.
8.1 Bit transfer
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 Figure 17).
8.1.1 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 dened as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is dened as the STOP
condition (P) (see Figure 18).
8.2 System conguration
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 19).
Fig 17. Bit transfer
mba607
data line
stable;
data valid
change
of data
allowed
SDA
SCL
Fig 18. Denition of START and STOP conditions
mba608
SDA
SCL
P
STOP condition
S
START condition
相关PDF资料 |
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| PCA9535PW,112 | IC I/O EXPANDER I2C 16B 24TSSOP |
| PCA9535PW,118 | IC I/O EXPANDER I2C 16B 24TSSOP |
| PCA9535D,112 | IC I/O EXPANDER I2C 16B 24SOIC |
| PCA9500PW,112 | IC I/O EXPANDER I2C 8B 16TSSOP |
| PCA9554PW/Q900,118 | IC I/O EXPANDER I2C 8B 16TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9501PW-T | 制造商:NXP Semiconductors 功能描述:I2C and SMBus I/O Port 20-Pin TSSOP T/R 制造商:NXP Semiconductors 功能描述:8-BIT I2C-BUS AND SMBUS I/O PORT WITH INTERRUPT, 2-KBIT EEPROM AND 6 ADDRESS PINS |
| PCA9502 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit I/O expander with I2C-bus/SPI interface |
| PCA9502BS | 功能描述:接口-I/O扩展器 8-BITI/O EXPDR W/I2C-SPI INTRF RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| PCA9502BS,128 | 功能描述:接口-I/O扩展器 8-BITI/O EXPDR RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| PCA9502BS,151 | 功能描述:接口-I/O扩展器 I/O EXPANDER I2C RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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