參數(shù)資料
型號: P83C661X2BBD
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 80C51 8-bit microcontroller family
中文描述: 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-389-1, LQFP-44
文件頁數(shù): 46/102頁
文件大?。?/td> 584K
代理商: P83C661X2BBD
Philips Semiconductors
Product data
P8xC660X2/661X2
80C51 8-bit microcontroller family
16 KB OTP/ROM, 512B
RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33
MHz), two 400KB I
2
C interfaces
2003 Oct 02
46
Table 9.
Master Transmitter Mode
STATUS
CODE
(S1STA)
STATUS OF THE
I
2
C BUS AND
SIO1 HARDWARE
APPLICATION SOFTWARE RESPONSE
TO/FROM S1DAT
TO S1CON
NEXT ACTION TAKEN BY SIO1 HARDWARE
STA
STO
SI
AA
08H
A START condition has
been transmitted
Load SLA+W
X
0
0
X
SLA+W will be transmitted;
ACK bit will be received
10H
A repeated START
condition h
transmitted
b
Load SLA+W or
Load SLA+R
X
X
0
0
0
0
X
X
As above
SLA+W will be transmitted;
SIO1 will be switched to MST/REC mode
18H
SLA+W has been
transmitted; ACK has
been received
Load data byte or
0
0
0
X
Data byte will be transmitted;
ACK bit will be received
Repeated START 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
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
20H
SLA+W has been
transmitted; NOT ACK
has been received
Load data byte or
0
0
0
X
Data byte will be transmitted;
ACK bit will be received
Repeated START 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
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
28H
Data byte in S1DAT has
been transmitted; ACK
has been received
Load data byte or
0
0
0
X
Data byte will be transmitted;
ACK bit will be received
Repeated START 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
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
30H
Data byte in S1DAT has
been transmitted; NOT
ACK has been received
Load data byte or
0
0
0
X
Data byte will be transmitted;
ACK bit will be received
Repeated START 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
I
2
C bus will be released;
not addressed slave will be entered
A START condition will be transmitted when the
bus becomes free
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
38H
Arbitration lost in
SLA+R/W or
Data bytes
No S1DAT action or
0
0
0
X
No S1DAT action
1
0
0
X
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