参数资料
型号: PCA9675D,118
厂商: NXP Semiconductors
文件页数: 26/29页
文件大小: 0K
描述: IC I/O EXPANDER I2C 16B 24SOIC
产品培训模块: LED Controllers
标准包装: 1
接口: I²C
输入/输出数: 16
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: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SO
包装: 标准包装
包括: POR
其它名称: 568-4204-6
PCA9675
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 3 October 2011
6 of 34
NXP Semiconductors
PCA9675
Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
7.
Functional description
7.1 Device address
Following a START condition, the bus master must send the address of the slave it is
accessing and the operation it wants to perform (read or write). The address of the
PCA9675 is shown in Figure 7. Slave address pins AD2, AD1, and AD0 choose 1 of
64 slave addresses. To conserve power, no internal pull-up resistors are incorporated on
AD2, AD1, and AD0. Address values depending on AD2, AD1, and AD0 can be found in
Remark: The General Call address (0000 0000b) and the Device ID address
(1111 100Xb) are reserved and cannot be used as device address. Failure to follow this
requirement will cause the PCA9675 not to acknowledge.
Remark: Reserved I2C-bus addresses must be used with caution since they can interfere
with:
“reserved for future use” I2C-bus addresses (0000 011, 1111 101, 1111 110, 1111 111)
slave devices that use the 10-bit addressing scheme (1111 0xx)
High speed mode (Hs-mode) master code (0000 1xx)
The last bit of the first byte defines the operation to be performed. When set to logic 1 a
read is selected, while a logic 0 selects a write operation.
When AD2, AD1 and AD0 are held to VDD or VSS, the same address as the PCF8575 is
applied.
7.1.1 Address maps
Fig 7.
PCA9675 address
R/W
002aab636
A6
A5
A4
A3
A2
A1
A0
programmable
slave address
Table 3.
PCA9675 address map
AD2
AD1
AD0
A6
A5
A4
A3
A2
A1
A0
Address (hex)
VSS
SCL
VSS
0
01000
020h
VSS
SCL
VDD
0
01000
122h
VSS
SDA
VSS
0
01001
024h
VSS
SDA
VDD
0
01001
126h
VDD
SCL
VSS
0
01010
028h
VDD
SCL
VDD
0
01010
12Ah
VDD
SDA
VSS
0
01011
02Ch
VDD
SDA
VDD
0
01011
12Eh
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PCA9675DB 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
PCA9675DB,112 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
PCA9675DB,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
PCA9675DB-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
PCA9675DK,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