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| P89V660_08 Datasheet, PDF (33/89 Pages) NXP Semiconductors – 8-bit 80C51 5 V low power 16 kB/32 kB/64 kB flash microcontroller with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI | |||
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NXP Semiconductors
P89V660/662/664
80C51 with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI
Table 22. Master transmitter mode
Status code
(S1STA)
Status of the
Application software response
I2C-bus hardware to/from S1DAT to S1CON
STA STO SI
08H
A START
Load SLA+W
x
0
0
condition has
been transmitted.
10H
A repeat START Load SLA+W or x
0
0
condition has
Load SLA+R
been transmitted.
18H
SLA+W has been Load data byte or 0
0
0
transmitted; ACK
has been
received.
no S1DAT action 1
0
0
or
no S1DAT action 0
1
0
or
no S1DAT action 1
1
0
20H
SLA+W has been Load data byte or 0
0
0
transmitted;
NOT-ACK has
no S1DAT action 1
0
0
been received. or
no S1DAT action 0
1
0
or
no S1DAT action 1
1
0
28H
Data byte in
Load data byte or 0
0
0
S1DAT has been
transmitted; ACK
has been
no S1DAT action 1
0
0
received.
or
no S1DAT action 0
1
0
or
no S1DAT action 1
1
0
Next action taken by I2C-bus
hardware
AA
x
SLA+W will be transmitted;
ACK bit will be received.
x
As above; SLA+W will be
transmitted; I2C-bus switches
to Master Receiver mode.
x
Data byte will be transmitted;
ACK bit will be received.
x
Repeated START will be
transmitted.
x
STOP condition will be
transmitted;
STO ï¬ag will be reset.
x
STOP condition followed by a
START condition will be
transmitted; STO ï¬ag will be
reset.
x
Data byte will be transmitted;
ACK bit will be received.
x
Repeated START will be
transmitted.
x
STOP condition will be
transmitted; STO ï¬ag will be
reset.
x
STOP condition followed by a
START condition will be
transmitted; STO ï¬ag will be
reset.
x
Data byte will be transmitted;
ACK bit will be received.
x
Repeated START will be
transmitted.
x
STOP condition will be
transmitted; STO ï¬ag will be
reset.
x
STOP condition followed by a
START condition will be
transmitted; STO ï¬ag will be
reset.
P89V660_662_664_2
Product data sheet
Rev. 02 â 29 January 2008
© NXP B.V. 2008. All rights reserved.
33 of 89
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