參數(shù)資料
型號(hào)： PTN3500
廠商： NXP Semiconductors N.V.
英文描述： Maintenance and control device
中文描述： 維護(hù)和控制裝置
文件頁(yè)數(shù)： 4/15頁(yè)
文件大?。?/td> 115K
代理商： PTN3500
Philips Semiconductors
Product specification
PTN3500
Maintenance and control device
2001 Jan 17
4
Acknowledge (see Figure 6)
The number of data bytes transferred between the start and the stop
conditions from transmitter to receiver is not limited. Each byte of
eight bits is followed by one acknowledge bit. The acknowledge bit
is a HIGH level put on the bus by the transmitter whereas the
master generates an extra acknowledge related clock pulse.
A slave receiver which is addressed must generate an acknowledge
after the reception of each byte. Also a master must generate an
acknowledge after the reception of each byte that has been clocked
out of the slave transmitter. The device that acknowledges has to
pull down the SDA line during the acknowledge clock pulse, so that
the SDA line is stable LOW during the HIGH period of the
acknowledge related clock pulse, set–up and hold times must be
taken into account.
A master receiver must signal an end of data to the transmitter by
not generating an acknowledge on the last byte that has been
clocked out of the slave. In this event the transmitter must leave the
data line HIGH to enable the master to generate a stop condition.
S
9
8
2
1
SW00545
DATA OUTPUT
BY TRANSMITTER
DATA OUTPUT
BY RECEIVER
SCL FROM
MASTER
ACKNOWLEDGE
NOT ACKNOWLEDGE
CLOCK PULSE FOR
ACKNOWLEDGEMENT
START
CONDITION
Figure 6. Acknowledgment on the I
2
C-bus
FUNCTIONAL DESCRIPTION
SW00546
WRITE PULSE
DATA FROM
SHIFT REGISTER
POWER-ON
RESET
READ PULSE
DATA TO
SHIFT REGISTER
V
DD
P0 TO P7
V
SS
100
μ
A
C
I
S
D
Q
FF
C
I
S
D
Q
FF
Figure 7. Simplified schematic diagram of each I/O
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參數(shù)描述
PTN3500D 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Maintenance and control device
PTN3500DH 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Maintenance and control device
PTN3501 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Maintenance and control device
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