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参数资料
| 型号： | PCA9534APWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8 I/O, PIA-GENERAL PURPOSE, PDSO16 |
| 封装： | GREEN, PLASTIC, TSSOP-16 |
| 文件页数： | 39/41页 |
| 文件大小： | 985K |
| 代理商： | PCA9534APWR |
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0
1
A1
A2
A0
Slave Address
R/W
Fixed
Hardware
Selectable
0
B1
B0
0
www.ti.com
SCPS141F – SEPTEMBER 2006 – REVISED JUNE 2010
Table 3. Interface Definition
BIT
BYTE
7 (MSB)
6
5
4
3
2
1
0 (LSB)
I2C slave address
L
H
A2
A1
A0
R/W
Px I/O data bus
P7
P6
P5
P4
P3
P2
P1
P0
Device Address
Figure 4 shows the address byte of the PCA9534A.
Figure 4. PCA9534A Address
Table 4. Address Reference
INPUTS
I2C BUS SLAVE ADDRESS
A2
A1
A0
L
56 (decimal), 38 (hexadecimal)
L
H
57 (decimal), 39 (hexadecimal)
L
H
L
58 (decimal), 3A (hexadecimal)
L
H
59 (decimal), 3B (hexadecimal)
H
L
60 (decimal), 3C (hexadecimal)
H
L
H
61 (decimal), 3D (hexadecimal)
H
L
62 (decimal), 3E (hexadecimal)
H
63 (decimal), 3F (hexadecimal)
The last bit of the slave address defines the operation (read or write) to be performed. When it is high (1), a read
is selected, while a low (0) selects a write operation.
Control Register and Command Byte
Following the successful acknowledgment of the address byte, the bus master sends a command byte which is
stored in the control register in the PCA9534A. Two bits of this command byte state the operation (read or write)
and the internal register (input, output, polarity inversion or configuration) that will be affected. This register can
be written or read through the I2C bus. The command byte is sent only during a write transmission.
Once a command byte has been sent, the register that was addressed continues to be accessed by reads until a
new command byte has been sent.
Figure 5. Control Register Bits
Copyright 2006–2010, Texas Instruments Incorporated
7
Product Folder Link(s): PCA9534A
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相关代理商/技术参数 |
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| PCA9534APWR | 制造商:Texas Instruments 功能描述:I2CLogicInterfaceDeviceICs |
| PCA9534APWRG4 | 功能描述:接口-I/O扩展器 Remote 8B I2C & Lo- Pwr I/O Expander 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 |
| PCA9534ARGTR | 功能描述:接口-I/O扩展器 Remote 8B I2C and Lo-Pwr I/O Expander 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 |
| PCA9534ARGTRG4 | 功能描述:接口-I/O扩展器 Remote 8B I2C and Lo-Pwr I/O Expander 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 |
| PCA9534ARGVR | 功能描述:接口-I/O扩展器 Remote 8B I2C & Lo- Pwr I/O Expander 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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