參數(shù)資料
型號(hào)： PCA9557
廠商： NXP Semiconductors N.V.
英文描述： 8-bit I2C and SMBus I/0 port with reset
中文描述： 8位I2C和SMBus I / 0端口復(fù)位
文件頁(yè)數(shù)： 9/16頁(yè)
文件大小： 127K
代理商： PCA9557
Philips Semiconductors
Product data
PCA9557
8-bit I
2
C and SMBus I/0 port with reset
2001 Dec 12
9
Bus Transactions
Data is transmitted to the PCA9557 registers using Write Byte transfers (see Figures 12 and 13). Data is read from the PCA9557 registers using
Read and Receive Byte transfers (see Figures 14 and 15).
1
2
SCL
WRITE TO
PORT
DATA OUT
FROM PORT
3
4
5
6
7
8
SDA
S
0
A
A
A
0
0
1
1
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
SW00797
9
1
0
0
0
0
0
0
0
command byte
P
Figure 12. WRITE to output port register
1
2
SCL
3
4
5
6
7
8
SDA
S
0
A
A
A
0
0
1
1
A2
A1
A0
DATA
slave address
data to register
start condition
R/W
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
SW00798
9
0
0
0
0
0
0
1
command byte
1/0
P
Figure 13. WRITE to I/O configuration or polarity inversion registers
1
1
A2
A1 A0
0
0
1
1
A2
A1
A0
0
0
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
su01052
no acknowledge
from master
1
slave address
data from register
data from register
slave address
Figure 14. READ from register
相關(guān)PDF資料
PDF描述
PCA9558 8-bit I2C and SMBus I/O port with 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM and 2 k bit EEPROM
PCA9559 5-bit multiplexed/1-bit latched 6-bit I I C EEPROM(5位多路的/1位鎖存的6位IIC EEPROM)
PCA9564 Parallel bus to I2C-bus controller
PCA9665 Fm+ parallel bus to I2C-bus controller
PCA9665N Fm+ parallel bus to I2C-bus controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9557BS 制造商:NXP Semiconductors 功能描述:
PCA9557BS,118 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM TP GPIO RST 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
PCA9557D 功能描述:接口-I/O擴(kuò)展器 Remote 8B I2C & SMBus I/O Expander 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
PCA9557D,112 功能描述:接口-I/O擴(kuò)展器 OCT SMBUS/I2C INTRFC 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
PCA9557D,118 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM TP GPIO 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
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