參數(shù)資料
型號(hào): PCA9555N
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 16-bit I2C and SMBus I/O port with interrupt
中文描述: 16 I/O, PIA-GENERAL PURPOSE, PDIP24
封裝: 0.600 INCH, PLASTIC, MO-015, SOT101-1, DIP-24
文件頁數(shù): 10/22頁
文件大?。?/td> 185K
代理商: PCA9555N
P
P
P
1
2
C
2
1
2
3
4
5
6
7
8
9
S
0
1
0
0
A2
A1
A0
1
A
A
I0.x
A
I1.x
A
I0.x
1
I1.x
P
R/W
ACKNOWLEDGE
FROM SLAVE
SCL
SDA
ACKNOWLEDGE
FROM MASTER
ACKNOWLEDGE
FROM MASTER
ACKNOWLEDGE
FROM MASTER
NON ACKNOWLEDGE
FROM MASTER
READ FROM PORT 0
DATA INTO PORT 0
READ FROM PORT 1
DATA INTO PORT 1
INT
t
IR
t
IV
SU01651
t
ph
DATA 00
DATA 10
DATA 03
DATA 12
DATA 00
DATA 01
DATA 02
DATA 03
t
ps
t
ph
t
ps
DATA 10
DATA 11
DATA 12
NOTES:
Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the latest acknowledge phase is valid (output mode).
It is assumed that the command byte has previously been set to 00 (read input port port register).
Figure 10.
READ input port register — scenario 2
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PDF描述
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