Octal SMBus and I2C registered interface
參數(shù)資料
型號: PCA9556PW,118
廠商: NXP Semiconductors
文件頁數(shù): 12/13頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 8B 16TSSOP
標準包裝: 2,500
接口: I²C,SM 總線
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時鐘: 100kHz
電源電壓: 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: 16-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 16-TSSOP
包裝: 帶卷 (TR)
包括: POR
其它名稱: 935262899118
PCA9556PW-T
PCA9556PW-T-ND
Philips Semiconductors
Product data
PCA9556
Octal SMBus and I2C registered interface
2002 Mar 28
8
1
A2
A1 A0
0
1
A2
A1
A0
0
S0
A
COMMAND BYTE
acknowledge
from slave
R/W
acknowledge
from slave
A
P
NA
acknowledge
from slave
acknowledge
from master
S
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
slave address
Figure 9. READ from register via Read byte protocol
00
1
A2
A1
A0
READ FROM
PORT
DATA INTO
PORT
SDA
S1
A
DATA 1
DATA 4
slave address
data from port
start condition
R/W
acknowledge
from slave
acknowledge
from master
stop
condition
tps
DATA 4
DATA 2
P
DATA 3
tph
SW00799
no acknowledge
from master
NA
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. When this occurs, data present at the last acknowledge phase is valid
(output mode). Input data is lost.
Figure 10. READ input port register via Receive byte protocol
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