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參數(shù)資料
| 型號： | 8XC552 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 80C51 FAMILY DERIVATIVES |
| 中文描述： | 80C51系列衍生物 |
| 文件頁數(shù)： | 24/60頁 |
| 文件大小： | 382K |
| 代理商： | 8XC552 |
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Philips Semiconductors
80C51 Family Derivatives
8XC552/562 overview
1996 Aug 06
24
Table 4.
Master Receiver Mode
STATUS
STATUS OF THE
I
2
C BUS AND
APPLICATION SOFTWARE RESPONSE
CODE
TO/FROM S1DAT
TO S1CON
NEXT ACTION TAKEN BY SIO1 HARDWARE
(S1STA)
SIO1 HARDWARE
STA
STO
SI
AA
08H
A START condition has
been transmitted
Load SLA+R
X
0
0
X
SLA+R will be transmitted;
ACK bit will be received
10H
A repeated START
condition has been
transmitted
Load SLA+R or
Load SLA+W
X
X
0
0
0
0
X
X
As above
SLA+W will be transmitted;
SIO1 will be switched to MST/TRX mode
38H
Arbitration lost in
NOT ACK bit
No S1DAT action or
No S1DAT action
0
1
0
0
0
0
X
X
I
2
C bus will be released;
SIO1 will enter a slave mode
A START condition will be transmitted when the
bus becomes free
40H
SLA+R has been
transmitted; ACK has
been received
No S1DAT action or
no S1DAT action
0
0
0
0
0
0
0
1
Data byte will be received;
NOT ACK bit will be returned
Data byte will be received;
ACK bit will be returned
48H
SLA+R has been
transmitted; NOT ACK
has been received
No S1DAT action or
no S1DAT action or
no S1DAT action
1
0
1
0
1
1
0
0
0
X
X
X
Repeated START condition will be transmitted
STOP condition will be transmitted;
STO flag will be reset
STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
50H
Data byte has been
received; ACK has been
returned
Read data byte or
read data byte
0
0
0
0
0
0
0
1
Data byte will be received;
NOT ACK bit will be returned
Data byte will be received;
ACK bit will be returned
58H
Data byte has been
received; NOT ACK has
been returned
Read data byte or
read data byte or
read data byte
1
0
1
0
1
1
0
0
0
X
X
X
Repeated START condition will be transmitted
STOP condition will be transmitted;
STO flag will be reset
STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
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