參數(shù)資料
型號： PCA9554ATS,112
廠商： NXP Semiconductors
文件頁數(shù)： 2/35頁
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 8B 20SSOP
標(biāo)準(zhǔn)包裝： 75
接口： I²C，SM 總線
輸入/輸出數(shù)： 8
中斷輸出： 是
頻率 - 時(shí)鐘： 400kHz
電源電壓： 2.3 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-LSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-SSOP
包裝： 管件
包括： POR
其它名稱： 935276772112
PCA9554ATS
PCA9554ATS-ND
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9554ATS-T 功能描述:I2C 接口集成電路 I2C I/O EXPANDER GP RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16
PCA9554B 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up
PCA9554BBS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up
PCA9554BBSHP 功能描述:接口-I/O擴(kuò)展器 8b I2C/SMBus IO Port I2C Fixed Address RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9554BPW 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up
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