- 您现在的位置：买卖IC网 > PDF目录299624 > PCA9534APWR (TEXAS INSTRUMENTS INC) 8 I/O, PIA-GENERAL PURPOSE, PDSO16 PDF资料下载
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： | 40/41页 |
| 文件大小： | 985K |
| 代理商： | PCA9534APWR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页当前第40页第41页
SCPS141F – SEPTEMBER 2006 – REVISED JUNE 2010
www.ti.com
Table 5. Command Byte
CONTROL
COMMAND
POWER-UP
REGISTER BITS
REGISTER
PROTOCOL
BYTE (HEX)
DEFAULT
B1
B0
0
0x00
Input Port
Read byte
xxxx xxxx
0
1
0x01
Output Port
Read/write byte
1111 1111
1
0
0x02
Polarity Inversion
Read/write byte
0000 0000
1
0x03
Configuration
Read/write byte
1111 1111
Register Descriptions
The input port register (register 0) reflects the incoming logic levels of the pins, regardless of whether the pin is
defined as an input or an output by the configuration register. It only acts on read operation. Writes to these
registers have no effect. The default value, X, is determined by the externally applied logic level.
Before a read operation, a write transmission is sent with the command byte to let the I2C device know that the
input port register will be accessed next.
Table 6. Register 0 (Input Port Register)
BIT
I7
I6
I5
I4
I3
I2
I1
I0
DEFAULT
X
The output port register (register 1) shows the outgoing logic levels of the pins defined as outputs by the
configuration register. Bit values in this register have no effect on pins defined as inputs. In turn, reads from this
register reflect the value that is in the flip-flop controlling the output selection, not the actual pin value.
Table 7. Register 1 (Output Port Register)
BIT
O7
O6
O5
O4
O3
O2
O1
O0
DEFAULT
1
The polarity inversion register (register 2) allows polarity inversion of pins defined as inputs by the configuration
register. If a bit in this register is set (written with 1), the corresponding port pin polarity is inverted. If a bit in this
register is cleared (written with a 0), the corresponding port pin original polarity is retained.
Table 8. Register 2 (Polarity Inversion Register)
BIT
N7
N6
N5
N4
N3
N2
N1
N0
DEFAULT
0
The configuration register (register 3) configures the directions of the I/O pins. If a bit in this register is set to 1,
the corresponding port pin is enabled as an input with high-impedance output driver. If a bit in this register is
cleared to 0, the corresponding port pin is enabled as an output.
Table 9. Register 3 (Configuration Register)
BIT
C7
C6
C5
C4
C3
C2
C1
C0
DEFAULT
1
Power-On Reset
When power (from 0 V) is applied to VCC, an internal power-on reset holds the PCA9534A in a reset condition
until VCC has reached VPOR. At that point, the reset condition is released and the PCA9534A registers and
I2C/SMBus state machine initialize to their default states. After that, VCC must be lowered to below 0.2 V and
then back up to the operating voltage for a power-reset cycle.
8
Copyright 2006–2010, Texas Instruments Incorporated
Product Folder Link(s): PCA9534A
相关PDF资料 |
PDF描述 |
|---|---|
| PCA9554ADBRG4 | 8 I/O, PIA-GENERAL PURPOSE, PDSO16 |
| PCB1A24S | 24 CONTACT(S), FEMALE, STRAIGHT SINGLE PART CARD EDGE CONN, SCREW |
| PCD25F98S0T20 | 25 CONTACT(S), FEMALE, D SUBMINIATURE CONNECTOR, PRESS FIT |
| PCFMB150E6 | 150 A, 600 V, N-CHANNEL IGBT |
| PCH-27-823 | 1 ELEMENT, 82 uH, GENERAL PURPOSE INDUCTOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
发布紧急采购，3分钟左右您将得到回复。