参数资料
型号: PCA9554PW/Q900,118
厂商: NXP Semiconductors
文件页数: 2/35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
其它名称: 568-6667-6
PCA9554_9554A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 9 — 19 March 2013
10 of 35
NXP Semiconductors
PCA9554; PCA9554A
8-bit I2C-bus and SMBus I/O port with interrupt
6.5 Device address
6.6 Bus transactions
Data is transmitted to the PCA9554/PCA9554A registers using the Write mode as shown
in Figure 11 and Figure 12. Data is read from the PCA9554/PCA9554A registers using the
Read mode as shown in Figure 13 and Figure 14. 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.
Fig 9.
PCA9554 device address
Fig 10. PCA9554A device address
002aac494
0
1
0
A2
A1
A0 R/W
fixed
slave address
hardware
selectable
002aac495
0
1
A2
A1
A0 R/W
fixed
slave address
hardware
selectable
Fig 11. Write to Output Port register
1
0
A2 A1 A0
0
A
S0
START condition
R/W
acknowledge
from slave
002aac472
A
acknowledge
from slave
SCL
SDA
A
write to port
data out
from port
P
tv(Q)
9
8
7
6
5
4
3
2
1
command byte
acknowledge
from slave
data to port
DATA 1
slave address
0000001
0
STOP
condition
data 1 valid
Fig 12. Write to Configuration register or Polarity Inversion register
1
0
A2 A1 A0
0
A
S0
START condition
R/W
acknowledge
from slave
002aac473
A
acknowledge
from slave
SCL
SDA
A
data to
register
P
9
8
7
6
5
4
3
2
1
command byte
acknowledge
from slave
data to register
DATA
slave address
000001 1/0
0
STOP
condition
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PCA9554PWRG4 功能描述:接口-I/O扩展器 Rem 8B I2C & SMBus 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
PCA9554PW-T 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit I2C-bus and SMBus I/O port with interrupt
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PCA9554RGVR 制造商:TI 制造商全称:Texas Instruments 功能描述:REMOTE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS