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PDF ( 数据手册 , 数据表 ) 9535

零件编号 9535
描述 16-bit I2C and SMBus/ low power I/O port with interrupt
制造商 NXP Semiconductors
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9535 数据手册, 描述, 功能
INTEGRATED CIRCUITS
PCA9535
16-bit I2C and SMBus, low power I/O port
with interrupt
Product data
2003 Jun 27
Philips
Semiconductors







9535 pdf, 数据表
slave address
acknowledge
from slave
acknowledge
from slave
slave address
acknowledge
from slave
data from lower
or upper byte
of register
acknowledge
from master
S 0 1 0 0 A2 A1 A0 0 A
R/W
COMMAND BYTE
A S 0 0 1 0 A2 A1 A0 1 A MSB
DATA
LSB A
at this moment master-transmitter
becomes master-receiver and
slave-receiver becomes
slave-transmitter
R/W
first byte
data from upper
or lower byte of
register
no acknowledge
from master
NOTE: Transfer can be stopped at any time by a STOP condition.
Figure 8. READ from register
MSB
DATA
last byte
LSB NA P
SU01463
SCL
123456789
I0.x I1.x I0.x
I1.x
SDA S 0 1 0 0 A2 A1 A0 1 A 7 6 5 4 3 2 1 0 A 7 6 5 4 3 2 1 0 A 7 6 5 4 3 2 1 0 A 7 6 5 4 3 2 1 0 1 P
READ FROM PORT 0
R/W ACKNOWLEDGE
FROM SLAVE
ACKNOWLEDGE
FROM MASTER
ACKNOWLEDGE
FROM MASTER
ACKNOWLEDGE
FROM MASTER
NON ACKNOWLEDGE
FROM MASTER
DATA INTO PORT 0
READ FROM PORT 1
DATA INTO PORT 1
INT
tIV tIR
SU01464
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 9. READ input port register scenario 1







9535 equivalent, schematic
Philips Semiconductors
16-bit I2C and SMBus, low power I/O port with interrupt
Product data
PCA9535
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm
SOT355-1
2003 Jun 27
16










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