AT89C51IC2 Atmel Corporation, AT89C51IC2 Datasheet - Page 90

• Manufacturer Part Number: AT89C51IC2
• Manufacturer: Atmel Corporation

Specifications of AT89C51IC2

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Figure 38. Format and State in the Master Transmitter Mode
90
Successfull
transmission
to a slave
receiver
Next transfer
started with a
repeated start
condition
Not acknowledge
received after the
slave address
Not acknowledge
received after a data
byte
Arbitration lost in slave
address or data byte
Arbitration lost and
addressed as slave
AT89C51IC2
From master to slave
From slave to master
08h
S
SLA
W
A or A
Data
MT
18h
A
A
20h
38h
A
68h
n
Other master
Other master
78h
continues
continues
P
A
Data
B0h
Any number of data bytes and their associated
acknowledge bits
This number (contained in SSCS) corresponds
to a defined state of the 2-wire bus
A or A
28h
A
A
38h
30h
To corresponding
states in slave mode
Other master
continues
P
S
10h
P
SLA
W
R
4301D–8051–02/08
MR