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參數資料
| 型號： | PCA9554 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit I2C and SMBus I/O port with interrupt |
| 中文描述： | 8位I2C和SMBus I / O端口的中斷 |
| 文件頁數： | 7/20頁 |
| 文件大?。?/td> | 183K |
| 代理商： | PCA9554 |
Philips Semiconductors
Product data sheet
PCA9554/PCA9554A
8-bit I
2
C and SMBus I/O port with interrupt
2004 Sep 30
7
Device address
0
1
0
0
A2
A1
A0
SLAVE ADDRESS
su01669
FIXED
HARDWARE SELECTABLE
R/W
Figure 5. PCA9554 address
0
1
1
1
A2
A1
A0
slave address
su01418
fixed
programmable
R/W
Figure 6. PCA9554A address
Bus transactions
Data is transmitted to the PCA9554/PCA9554A registers using the write mode as shown in Figures 7 and 8. Data is read from the
PCA9554/PCA9554A registers using the read mode as shown in Figures 9 and 10. 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.
1
2
SCL
WRITE TO
PORT
DATA OUT
FROM PORT
3
4
5
6
7
8
SDA
S
0
A
A
A
0
1
0
0
A2
A1
A0
DATA 1
slave address
data to port
start condition
R/W
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
t
pv
DATA 1 VALID
su01421
9
1
0
0
0
0
0
0
0
command byte
P
Figure 7. WRITE to output port register
1
2
SCL
3
4
5
6
7
8
SDA
S
0
A
A
A
0
1
0
0
A2
A1
A0
DATA
slave address
data to register
start condition
R/W
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
su01422
9
0
0
0
0
0
0
1
command byte
1/0
DATA TO
REGISTER
P
Figure 8. WRITE to configuration or polarity inversion registers
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| PCA9554AN | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9554N | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9559PWDH | 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCA9554A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C and SMBus I/O port with interrupt |
| PCA9554ABS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C and SMBus I/O port with interrupt |
| PCA9554ABS,115 | 制造商:NXP Semiconductors 功能描述: |
| PCA9554ABS,118 | 功能描述:接口-I/O擴展器 I2C I/O EXPANDER GP RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數量: 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9554ABS118 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
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