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參數(shù)資料
| 型號： | PCA9538 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit I2C and SMBus low power I/O port with interrupt and reset |
| 中文描述： | 8位I2C和SMBus低功率的I / O端口中斷和復(fù)位 |
| 文件頁數(shù)： | 7/18頁 |
| 文件大小： | 197K |
| 代理商： | PCA9538 |
Philips Semiconductors
8-bit I
2
C and SMBus low power I/O port
with interrupt and reset
Product data sheet
PCA9538
2004 Oct 05
7
1
0
0
A1 A0
1
1
1
0
0
A1
A0
1
1
S
0
A
A
A
COMMAND BYTE
acknowledge
from slave
R/W
acknowledge
from slave
A
P
NA
acknowledge
from slave
acknowledge
from master
S
DATA
DATA
R/W
first byte
at this moment master-transmitter
becomes master-receiver and
slave-receiver becomes
slave-transmitter
last byte
SW02178
no acknowledge
from master
1
slave address
data from register
data from register
slave address
Figure 8. READ from register
1
1
1
0
0
A1
A0
READ FROM
PORT
DATA INTO
PORT
SDA
S
1
A
A
DATA 1
DATA 4
slave address
data from port
data from port
start condition
R/W
acknowledge
from slave
acknowledge
from master
stop
condition
t
ps
DATA 4
DATA 2
P
DATA 3
t
ph
SW02179
no acknowledge
from master
NA
INT
t
ir
t
iv
1
2
SCL
3
4
5
6
7
8
9
NOTES:
1. This figure assumes the command byte has previously been programmed with 00h.
2. Transfer of data can be stopped at any moment by a stop condition.
Figure 9. READ input port register
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| PCA9545 | 4-channel I2C switch with interrupt logic and reset |
| PCA9545D | 4-channel I2C switch with interrupt logic and reset |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9538_1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS |
| PCA9538A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus I/O port with interrupt and reset |
| PCA9538ABS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus I/O port with interrupt and reset |
| PCA9538ABSHP | 功能描述:接口-I/O擴(kuò)展器 8bit I2C IO Port 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 |
| PCA9538APW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus I/O port with interrupt and reset |
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