Philips Semiconductors
Preliminary specification
80C51 8-bit microcontroller
8K/256 OTP, 8 channel 10 bit A/D, I2C, PWM,
capture/compare, high I/O, low voltage (2.7V–5.5V), low power
P87C552
MT
SUCCESSFUL TRANSMISSION
TO A SLAVE RECEIVER
S
SLA
W
A
DATA
A
P
28H
08H
18H
NEXT TRANSFER STARTED WITH A REPEATED START CONDITION
NOT ACKNOWLEDGE RECEIVED AFTER THE SLAVE ADDRESS
S
SLA
W
R
10H
A
P
20H
TO MST/REC MODE
ENTRY = MR
NOT ACKNOWLEDGE RECEIVED AFTER A DATA BYTE
A
P
30H
ARBITRATION LOST IN SLAVE ADDRESS OR DATA BYTE
OTHER MST
CONTINUES
OTHER MST
CONTINUES
A or A
38H
A or A
38H
ARBITRATION LOST AND ADDRESSED AS SLAVE
OTHER MST
CONTINUES
A
TO CORRESPONDING
STATES IN SLAVE MODE
68H
78H
80H
FROM MASTER TO SLAVE
FROM SLAVE TO MASTER
Data
n
A
ANY NUMBER OF DATA BYTES AND THEIR ASSOCIATED ACKNOWLEDGE BITS
2
THIS NUMBER (CONTAINED IN S1STA) CORRESPONDS TO A DEFINED STATE OF THE I C BUS. SEE TABLE 6.
SU00971
Figure 39. Format and States in the Master Transmitter Mode
39
1999 Mar 30
NXP [ NXP ]
