AT89C51ID2_05 Datasheet, PDF (92/157 Pages) ATMEL Corporation – 8-bit Flash Microcontroller

AT89C51ID2
Table 68. Status in Slave Receiver Mode (Continued)
Application Software Response
Status
Code
(SSCS)
Status of the 2-wire bus and
2-wire hardware
To/from SSDAT
To SSCON
STA STO SI
Read data byte or
0
0
0
Read data byte or
0
0
0
Previously addressed with
98h
general call; data has been
received; NOT ACK has been
Read data byte or
1
0
0
returned
Read data byte
1
0
0
No SSDAT action or 0
0
0
No SSDAT action or 0
0
0
A STOP condition or repeated
A0h
START condition has been
received while still addressed _{No SSDAT action or 1}
0
0
as slave
No SSDAT action
1
0
0
AA Next Action Taken By 2-wire Software
Switched to the not addressed slave mode; no
0 ^{recognition of own SLA or GCA}
Switched to the not addressed slave mode; own
1
SLA will be recognised; GCA will be recognised if
GC=logic 1
Switched to the not addressed slave mode; no
0
recognition of own SLA or GCA. A START
condition will be transmitted when the bus
becomes free
Switched to the not addressed slave mode; own
1
SLA will be recognised; GCA will be recognised if
GC=logic 1. A START condition will be
transmitted when the bus becomes free
Switched to the not addressed slave mode; no
0 ^{recognition of own SLA or GCA}
Switched to the not addressed slave mode; own
1
SLA will be recognised; GCA will be recognised if
GC=logic 1
Switched to the not addressed slave mode; no
0
recognition of own SLA or GCA. A START
condition will be transmitted when the bus
becomes free
Switched to the not addressed slave mode; own
1
SLA will be recognised; GCA will be recognised if
GC=logic 1. A START condition will be
transmitted when the bus becomes free
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