AT89LP51RD2 Atmel Corporation, AT89LP51RD2 Datasheet - Page 150

• Manufacturer Part Number: AT89LP51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89LP51RD2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 42
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 7
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 4
• Isp: SPI/OCD/UART
• Watchdog: Yes

Figure 19-11. Format and States in Master Transmitter Mode
150
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
AT89LP51RD2/ED2/ID2 Preliminary
From master to slave
From slave to master
08h
S
SLA
W
MT
A or A
DATA
18h
20h
38h
68h
A
A
A
78h
Other master
Other master
n
continues
continues
P
B0h
DATA
A
Any number of data bytes
and their associated acknowledge bits
This number (contained in TWSR) corresponds
to a defined state of the Two-wire Serial Bus. The
prescaler bits are zero or masked to zero
A or A
28h
30h
38h
To corresponding
states in slave mode
A
A
Other master
10h
continues
P
R
P
S
SLA
W
R
3714A–MICRO–7/11
MR