P87C554 NXP Semiconductors, P87C554 Datasheet - Page 47

• Manufacturer Part Number: P87C554
• Description: The P87C554 Single-Chip 8-Bit Microcontroller is manufactured inan advanced CMOS process and is a derivative of the 80C51microcontroller family
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 8.
2002 Mar 25
STATUS
STATUS
(S1STA)
(S1STA)
CODE
80C51 8-bit microcontroller – 12 clock operation
16K/512 OTP/RAM, 8 channel 10-bit A/D, I
capture/compare, high I/O
60H
68H
70H
78H
80H
88H
90H
98H
Own SLA+W has
been received; ACK
h
has been returned
Arbitration lost in
SLA+R/W as master;
Own SLA+W has
b
been received, ACK
returned
General call address
(00H) has been
received; ACK has
received ACK has
been returned
Arbitration lost in
SLA+R/W as master;
General call address
has been received
has been received,
ACK has been
returned
Previously addressed
with own SLV
address; DATA has
b
been received; ACK
has been returned
Previously addressed
with own SLA; DATA
b
byte has been
received; NOT ACK
has been returned
Previously addressed
with General Call;
DATA byte has been
received; ACK has
been returned
Previously addressed
with General Call;
DATA b
DATA byte has been
received; NOT ACK
has been returned
SIO1 HARDWARE
SIO1 HARDWARE
STATUS OF THE
STATUS OF THE
Slave Receiver Mode
I
b
i
2
h
C BUS AND
d ACK h
b
i
i
h
d ACK
d ACK
b
d
No S1DAT action or
no S1DAT action
No S1DAT action or
no S1DAT action
No S1DAT action or
no S1DAT action
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 or
read data byte
Read data byte or
read data byte
Read data byte or
read data byte or
read data byte or
read data byte
TO/FROM S1DAT
TO/FROM S1DAT
APPLICATION SOFTWARE RESPONSE
STA
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
0
0
1
1
2
C, PWM,
TO S1CON
STO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
45
SI
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
AA
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
Switched to not addressed SLV mode; no recognition
of own SLA or General call address
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1
Switched to not addressed SLV mode; no recognition
of own SLA or General call address. A START
condition will be transmitted when the bus becomes
free
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1. A START condition
will be transmitted when the bus becomes free.
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
Switched to not addressed SLV mode; no recognition
of own SLA or General call address
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1
Switched to not addressed SLV mode; no recognition
of own SLA or General call address. A START
condition will be transmitted when the bus becomes
free
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1. A START condition
will be transmitted when the bus becomes free.
NEXT ACTION TAKEN BY SIO1 HARDWARE
P87C554
Product data