参数资料
型号: PCA9674PW,118
厂商: NXP Semiconductors
文件页数: 5/40页
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 16TSSOP
产品培训模块: LED Controllers
I²C Bus Fundamentals
特色产品: NXP - I2C Interface
标准包装: 1
接口: I²C
输入/输出数: 8
中断输出:
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: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 标准包装
包括: POR
产品目录页面: 826 (CN2011-ZH PDF)
其它名称: 568-4077-6
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
13 of 40
NXP Semiconductors
PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
Remark: The reading of the Device ID can be stopped anytime by sending a NACK
command.
Remark: If the master continues to ACK the bytes after the third byte, the PCA9674;
PCA9674A rolls back to the first byte and keeps sending the Device ID sequence until
a NACK has been detected.
For the PCA9674; PCA9674A, the Device ID is as shown in Figure 10.
Simple code for reading Device ID:
<S> <F8h> <ACK> <slave address> <ACK> <SR> <F8h + R> <ACK> <DATA1>
<ACK> <DATA2> <ACK> <DATA3> <NACK> <P>
Fig 10. PCA9674; PCA9674A Device ID field
0
002aah724
0
revision
1
0
1
0
1
0
1
0
part identification
0
00
manufacturer
If more than 2 bytes are read, the slave device loops back to the first byte (manufacturer byte) and keeps sending data until the
master generates a ‘no acknowledge’.
Fig 11. Device ID field reading
002aac119
A6 A5 A4 A3 A2 A1 A0
I2C-bus slave address
of the device to be identified
A
no acknowledge
from master
P
STOP condition
M
11
M
10
M9 M8 M7 M6 M5 M4
Sr
repeated START
condition
1 A
R/W
S
1
0
Device ID address
START condition
0 A
R/W
acknowledge from
one or several slaves
0 A
don’t care
acknowledge from
slave to be identified
1
0
Device ID address
acknowledge from
slave to be identified
A M3 M2 M1 M0
acknowledge
from master
manufacturer name = 000000000000
P8 P7 P6 P5 A
acknowledge
from master
P4 P3 P2 P1 P0 R2 R1 R0
part identification = 001001011
revision = 000
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PCA9674PW-T 功能描述:接口-I/O扩展器 8-BIT I2C FM+ QB GPIO INT 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
PCA9674TS 功能描述:接口-I/O扩展器 8-BIT I2C FM+ QB GPIO INT 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
PCA9674TS,112 功能描述:接口-I/O扩展器 8-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
PCA9674TS,118 功能描述:接口-I/O扩展器 8-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
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