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P87C552 Datasheet

  • P87C552

  • 80C51 8-bit microcontroller

  • 393.52KB

  • Philips

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Philips Semiconductors
Preliminary specification
80C51 8-bit microcontroller
8K/256 OTP, 8 channel 10 bit A/D, I
2
C, PWM,
capture/compare, high I/O, low voltage (2.7V鈥?.5V), low power
P87C552
Table 8.
STATUS
CODE
(S1STA)
A0H
Slave Receiver Mode
(Continued)
STATUS OF THE
I
2
C BUS AND
SIO1 HARDWARE
A STOP condition or
repeated START
di i has been
condition h b
received while still
addressed as
SLV/REC or SLV/TRX
APPLICATION SOFTWARE RESPONSE
TO/FROM S1DAT
STA
No STDAT action or
No STDAT action or
0
0
TO S1CON
STO
0
0
SI
0
0
AA
0
1
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
No STDAT action or
1
0
0
0
No STDAT action
1
0
0
1
Table 9.
STATUS
CODE
(S1STA)
A8H
Slave Transmitter Mode
STATUS OF THE
I
2
C BUS AND
SIO1 HARDWARE
Own SLA+R has
been received; ACK
h b
d
has been returned
Arbitration lost in
SLA+R/W as master;
Own SLA+R has
been received, ACK
has been returned
Data byte in S1DAT
has been transmitted;
ACK has been
received
Data byte in S1DAT
has been transmitted;
NOT ACK h b
has been
received
APPLICATION SOFTWARE RESPONSE
TO/FROM S1DAT
STA
Load data byte or
load data byte
Load data byte or
X
X
X
TO S1CON
STO
0
0
0
SI
0
0
0
AA
0
1
0
Last data byte will be transmitted and ACK bit will be
received
Data byte will be transmitted; ACK will be received
Last data byte will be transmitted and ACK bit will be
received
Data byte will be transmitted; ACK bit will be received
Last data byte will be transmitted and ACK bit will be
received
Data byte will be transmitted; ACK bit will be received
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.
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
B0H
load data byte
Load data byte or
load data byte
No S1DAT action or
no S1DAT action or
X
X
X
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
01
1
B8H
C0H
no S1DAT action or
1
0
0
0
no S1DAT action
1
0
0
1
C8H
Last data byte in
S1DAT has been
i d
0)
transmitted (AA = 0);
ACK has been
received
No S1DAT action or
no S1DAT action or
0
0
0
0
0
0
0
1
no S1DAT action or
1
0
0
0
no S1DAT action
1
0
0
1
1999 Mar 30
46

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