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| 型号： | PCA9535PW,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 25/26页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24TSSOP |
| 产品培训模块： | I²C Bus Fundamentals |
| 特色产品： | NXP - I2C Interface |
| 标准包装： | 63 |
| 接口： | I²C，SM 总线 |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 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-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
| 包括： | POR |
| 产品目录页面： | 825 (CN2011-ZH PDF) |
| 其它名称： | 568-1041-5 935273946112 PCA9535PW |
PCA9535_PCA9535C_5
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 15 September 2008
8 of 31
NXP Semiconductors
PCA9535; PCA9535C
16-bit I2C-bus and SMBus, low power I/O port with interrupt
6.2.5 Registers 6 and 7: Conguration registers
This register congures the directions of the I/O pins. If a bit in this register is set (written
with ‘1’), the corresponding port pin is enabled as an input with high-impedance output
driver. If a bit in this register is cleared (written with ‘0’), the corresponding port pin is
enabled as an output. At reset, the device's ports are inputs.
6.3 Power-on reset
When power is applied to VDD, an internal power-on reset holds the PCA9535/PCA9535C
in a reset condition until VDD has reached VPOR. At that point, the reset condition is
released and the PCA9535/PCA9535C registers and SMBus state machine will initialize
to their default states. Thereafter, VDD must be lowered below 0.2 V to reset the device.
For a power reset cycle, VDD must be lowered below 0.2 V and then restored to the
operating voltage.
6.4 I/O port
When an I/O is congured as an input on PCA9535, FETs Q1 and Q2 are off, creating a
high impedance input. The input voltage may be raised above VDD to a maximum of 5.5 V.
In the case of PCA9535C, FET Q1 has been removed and the open-drain FET Q2 will
function the same as PCA9535.
If the I/O is congured as an output, then on PCA9535 either Q1 or Q2 is on, depending
on the state of the Output Port register. Care should be exercised if an external voltage is
applied to an I/O congured as an output because of the low-impedance path that exists
between the pin and either VDD or VSS.
Table 11.
Conguration port 0 register
Bit
7
6
5
4
3
2
1
0
Symbol
C0.7
C0.6
C0.5
C0.4
C0.3
C0.2
C0.1
C0.0
Default
11111111
Table 12.
Conguration port 1 register
Bit
7
6
5
4
3
2
1
0
Symbol
C1.7
C1.6
C1.5
C1.4
C1.3
C1.2
C1.1
C1.0
Default
11111111
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| PCA9535PW,118 | IC I/O EXPANDER I2C 16B 24TSSOP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9535PWE4 | 功能描述:接口-I/O扩展器 16-Bit I2C & SMBus 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 |
| PCA9535PWG4 | 功能描述:接口-I/O扩展器 Rem 16B I2C & SMBus Low-Pwr I/O Exp 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 |
| PCA9535PWR | 功能描述:接口-I/O扩展器 16-Bit I2C & SMBus 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 |
| PCA9535PWR | 制造商:Texas Instruments 功能描述:I/O Expander IC |
| PCA9535PWRE4 | 功能描述:接口-I/O扩展器 16-Bit I2C & SMBus 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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