C8051F330 Silicon Laboratories Inc, C8051F330 Datasheet - Page 141

• Manufacturer Part Number: C8051F330
• Description: IC 8051 MCU 8K FLASH 20MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F33xr

Specifications of C8051F330

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

15.6. SMBus Status Decoding
The current SMBus status can be easily decoded using the SMB0CN register. In the table below, STATUS
VECTOR refers to the four upper bits of SMB0CN: MASTER, TXMODE, STA, and STO. Note that the
shown response options are only the typical responses; application-specific procedures are allowed as
long as they conform to the SMBus specification. Highlighted responses are allowed but do not conform to
the SMBus specification.
Table 15.4. SMBus Status Decoding
1100
1110
Values Read
0
0
0
0
0
0
X
0
1
Current SMbus State
was transmitted; NACK received.
A master START was generated.
was transmitted; ACK received.
A master data or address byte
A master data or address byte
C8051F330/1, C8051F330D
Rev. 1.2
Typical Response Options
End transfer with STOP and
ing new data to SMB0DAT).
Mode (clear SI without writ-
Load slave address + R/W
Set STA to restart transfer.
Switch to Master Receiver
Load next data byte into
End transfer with STOP.
Send repeated START.
start another transfer.
into SMB0DAT.
Abort transfer.
SMB0DAT.
0
1
0
0
0
1
1
0
Written
Values
0
0
1
0
1
1
0
0
141
X
X
X
X
X
X
X
X