P87C654X2 PHILIPS [NXP Semiconductors], P87C654X2 Datasheet - Page 44

• Manufacturer Part Number: P87C654X2
• Description: 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)
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 10.
2004 Apr 20
STATUS
STATUS
(S1STA)
(S1STA)
80C51 8-bit microcontroller family
256B RAM, low voltage (2.7 to 5.5 V), low power, high speed
(30/33 MHz)
CODE
08H
10H
38H
40H
48H
50H
58H
A START condition has
been transmitted
A repeated START
condition has been
transmitted
Arbitration lost in
NOT ACK bit
SLA+R has been
transmitted; ACK has
b
been received
SLA+R has been
t
transmitted; NOT ACK
has been received
Data byte has been
received; ACK has been
returned
Data byte has been
received; NOT ACK has
been returned
Master Receiver Mode
diti
STATUS OF THE
STATUS OF THE
i
I
HARDWARE
HARDWARE
2
itt d NOT ACK
C-BUS AND
d
d NOT ACK h
h
i
d
b
Load SLA+R
Load SLA+R or
Load SLA+W
No S1DAT action or
No S1DAT action
No S1DAT action or
no S1DAT action
No S1DAT action or
no S1DAT action or
no S1DAT action
Read data byte or
read data byte
Read data byte or
read data byte or
read data byte
TO/FROM S1DAT
TO/FROM S1DAT
APPLICATION SOFTWARE RESPONSE
16 kB OTP/ROM,
STA
X
X
X
0
1
0
0
1
0
1
0
0
1
0
1
44
STO
TO S1CON
0
0
0
0
0
0
0
0
1
1
0
0
0
1
1
SI
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
AA
X
X
X
X
X
0
1
X
X
X
0
1
X
X
X
SLA+R will be transmitted;
ACK bit will be received
As above
SLA+W will be transmitted;
I
I
I
A START condition will be transmitted when the
bus becomes free
Data byte will be received;
NOT ACK bit will be returned
Data byte will be received;
ACK bit will be returned
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
Data byte will be received;
NOT ACK bit will be returned
Data byte will be received;
ACK bit will be returned
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
2
2
2
NEXT ACTION TAKEN BY I
C will be switched to MST/TRX mode
C-bus will be released;
C will enter a slave mode
P83C654X2/P87C654X2
2
2
C HARDWARE
Product data