C8051F502-IMR Silicon Laboratories Inc, C8051F502-IMR Datasheet - Page 242

• Manufacturer Part Number: C8051F502-IMR
• Description: MCU 8-Bit C8051F50x 8051 CISC 64KB Flash 2.5V/3.3V/5V 32-Pin QFN EP T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F502-IMR

• Package: 32QFN EP
• Device Core: 8051
• Family Name: C8051F50x
• Maximum Speed: 50 MHz
• Ram Size: 4.25 KB
• Program Memory Size: 64 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 25
• Interface Type: I2C/SPI/UART
• On-chip Adc: 32-chx12-bit
• Operating Temperature: -40 to 125 °C
• Number Of Timers: 4

C8051F50x/F51x
242
Values Read
0100 0
0101 0
0010 1
0001 0
0000 1 0 X A slave byte was received;
0010 0
0001 0 1 X Lost arbitration due to a
0000 1 1 X Lost arbitration while transmit-
0 0
0
1 1
1
0 0 A slave byte was transmitted;
1
X X An illegal STOP or bus error
0 X A slave address + R/W was
0
1
1 X Lost arbitration while attempt-
1 A slave byte was transmitted;
X A Slave byte was transmitted;
X Lost arbitration as master;
X A STOP was detected while
X Lost arbitration while attempt-
Current SMbus State
NACK received.
ACK received.
error detected.
was detected while a Slave
Transmission was in progress.
received; ACK requested.
slave address + R/W received;
ACK requested.
addressed as a Slave Trans-
mitter or Slave Receiver.
ing a STOP.
ACK requested.
ing a repeated START.
detected STOP.
ting a data byte as master.
Table 23.4. SMBus Status Decoding
Rev. 1.2
Typical Response Options
No action required (expecting
STOP condition).
Load SMB0DAT with next data
byte to transmit.
No action required (expecting
Master to end transfer).
Clear STO.
If Write, Acknowledge received
address
If Read, Load SMB0DAT with
data byte; ACK received address
NACK received address.
If Write, Acknowledge received
address
If Read, Load SMB0DAT with
data byte; ACK received address
NACK received address.
Reschedule failed transfer;
NACK received address.
Clear STO.
No action required (transfer
complete/aborted).
Acknowledge received byte;
Read SMB0DAT.
NACK received byte.
Abort failed transfer.
Reschedule failed transfer.
Abort failed transfer.
Reschedule failed transfer.
Abort failed transfer.
Reschedule failed transfer.
Values to
Write
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
1
0 0 0
1
0 X 0001
0 X 0100
0 X 0001
0 X
0 1
0 1
0 0
0 1
0 1
0 0
0 0
0 X
0 0
0 1
0 0
0 X
0 X
0 X
0 X
0 0
0000
0100
0000
0100
0000
1110
1110
1110
1110
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