参数资料
| 型号： | PCA9674TS,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 3/40页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 20SSOP |
| 产品培训模块： | LED Controllers |
| 标准包装： | 1 |
| 接口： | I²C |
| 输入/输出数： | 8 |
| 中断输出： | 是 |
| 频率 - 时钟： | 1MHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-LSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 标准包装 |
| 包括： | POR |
| 其它名称： | 568-4078-6 |
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PCA9674_PCA9674A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 7 — 30 May 2013
11 of 40
NXP Semiconductors
PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
7.2 Software Reset Call, and device ID addresses
Two other different addresses can be sent to the PCA9674; PCA9674A.
General Call address: allows to reset the PCA9674; PCA9674A through the I2C-bus
more information.
Device ID address: allows to read ID information from the device (manufacturer, part
identification, revision). See Section 7.2.2 “Device ID (PCA9674; PCA9674A ID field)”
for more information.
7.2.1 Software Reset
The Software Reset Call allows all the devices in the I2C-bus to be reset to the power-up
state value through a specific formatted I2C-bus command. To be performed correctly, it
implies that the I2C-bus is functional and that there is no device hanging the bus.
The Software Reset sequence is defined as following:
1. A START command is sent by the I2C-bus master.
2. The reserved General Call I2C-bus address ‘0000 000’ with the R/W bit set to 0 (write)
is sent by the I2C-bus master.
3. The PCA9674; PCA9674A device(s) acknowledge(s) after seeing the General Call
address ‘0000 0000’ (00h) only. If the R/W bit is set to 1 (read), no acknowledge is
returned to the I2C-bus master.
4. Once the General Call address has been sent and acknowledged, the master sends
1 byte. The value of the byte must be equal to 06h.
a. The PCA9674; PCA9674A acknowledges this value only. If the byte is not equal to
06h, the PCA9674; PCA9674A does not acknowledge it.
If more than 1 byte of data is sent, the PCA9674; PCA9674A does not acknowledge
any more.
5. Once the right byte has been sent and correctly acknowledged, the master sends a
STOP command to end the Software Reset sequence: the PCA9674; PCA9674A
then resets to the default value (power-up value) and is ready to be addressed again
within the specified bus free time. If the master sends a Repeated START instead, no
reset is performed.
Fig 7.
General Call address
Fig 8.
Device ID address
0
002aac115
0
R/W
002aac116
1
0
相关PDF资料 |
PDF描述 |
|---|---|
| PCA9674ATS,118 | IC I/O EXPANDER I2C 8B 20SSOP |
| PCA9674PW,112 | IC I/O EXPANDER I2C 8B 16TSSOP |
| PCA9554D,118 | IC I/O EXPANDER I2C 8B 16SOIC |
| PCA9554ATS,112 | IC I/O EXPANDER I2C 8B 20SSOP |
| PCA9554AD,118 | IC I/O EXPANDER I2C 8B 16SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9674TS-T | 功能描述:接口-I/O扩展器 8-BIT I2C FM+ QB GPIO RST PU 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 |
| PCA9675BQ,118 | 功能描述:接口-I/O扩展器 REMOTE 16BIT GPIO 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 |
| PCA9675BQ-T | 功能描述:接口-I/O扩展器 REMOTE 16BIT GPIO FM+I2C-INTER 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 |
| PCA9675BS,118 | 功能描述:接口-I/O扩展器 16-BIT I2C FM+ QB 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 |
| PCA9675BS-T | 功能描述:接口-I/O扩展器 16-BIT I2C FM+ QB GPIO RST PU 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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