參數(shù)資料
型號(hào)： P83C654X2FA
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 16 kB OTP/ROM, 256B RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHz)
中文描述： 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, MS-018, SOT-187-2, LCC-44
文件頁(yè)數(shù)： 43/88頁(yè)
文件大?。?/td> 497K
代理商： P83C654X2FA
Philips Semiconductors
Product data
P83C654X2/P87C654X2
80C51 8-bit microcontroller family
16 kB OTP/ROM,
256B RAM, low voltage (2.7 to 5.5 V), low power, high speed
(30/33 MHz)
2004 Apr 20
43
Table 9.
Master Transmitter Mode
STATUS
CODE
(S1STA)
STATUS OF THE
I
2
C BUS AND
HARDWARE
APPLICATION SOFTWARE RESPONSE
TO/FROM S1DAT
TO S1CON
NEXT ACTION TAKEN BY AND
I
2
C
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;
I
2
C 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
b
h
i
d
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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