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
RECEPTION OF THE
OWN SLAVE ADDRESS
AND TRANSMISSION
OF ONE OR MORE
DATA BYTES
S
SLA
R
A
DATA
A8H
A
ARBITRATION LOAST AS MST
AND ADDRESSED AS SLAVE
FROM MASTER TO SLAVE
B0H
LAST DATA BYTE TRANSMITTED.
SWITCHED TO NOT ADDRESSED
SLAVE (AA BIT IN S1CON = 鈥?鈥?/div>
A
All 鈥?鈥漵
FROM SLAVE TO MASTER
C8H
DATA
A
ANY NUMBER OF DATA BYTES AND THEIR ASSOCIATED ACKNOWLEDGE BITS
n
THIS NUMBER (CONTAINED IN S1STA) CORRESPONDS TO A DEFINED STATE OF THE I
2
C BUS. SEE TABLE 9.
Figure 42. Format and States of the Slave Transmitter Mode
1999 Mar 30
42
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A
DATA
A
P or S
B8H
C0H
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P or S
SU00974
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