参数资料
型号: PCA9534PW,118
厂商: NXP Semiconductors
文件页数: 23/25页
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 16TSSOP
产品培训模块: I²C Bus Fundamentals
特色产品: NXP - I2C Interface
标准包装: 1
接口: I²C,SM 总线
输入/输出数: 8
中断输出:
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: 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: 825 (CN2011-ZH PDF)
其它名称: 568-1834-6
PCA9534_3
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 6 November 2006
7 of 25
NXP Semiconductors
PCA9534
8-bit I2C-bus and SMBus low power I/O port with interrupt
6.5 Device address
6.6 Bus transactions
Data is transmitted to the PCA9534 registers using the Write mode as shown in Figure 8
and Figure 9. Data is read from the PCA9534 registers using the Read mode as shown in
Figure 10 and Figure 11. These devices do not implement an auto-increment function, so
once a command byte has been sent, the register which was addressed will continue to
be accessed by reads until a new command byte has been sent.
Remark: At power-on reset, all registers return to default values.
Fig 6.
Simplied schematic of IO0 to IO7
VDD
IO0 to IO7
output port
register data
configuration
register
DQ
CK
Q
data from
shift register
write configuration
pulse
output port
register
DQ
CK
write pulse
polarity inversion
register
DQ
CK
data from
shift register
write polarity
pulse
input port
register
DQ
CK
read pulse
input port
register data
polarity inversion
register data
002aac470
FF
data from
shift register
FF
Q1
Q2
VSS
to INT
Fig 7.
PCA9534 device address
002aac471
0
1
0
A2
A1
A0 R/W
fixed
slave address
hardware
selectable
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