參數資料
型號： C8051F300-TB
廠商： Silicon Laboratories Inc
文件頁數： 25/178頁
文件大?。?/td> 0K
描述： BOARD PROTOTYPING W/C8051F300
標準包裝： 1
類型： MCU
適用于相關產品： C8051F300
所含物品： 板
C8051F300/1/2/3/4/5
120
Rev. 2.9
SFR Definition 13.2.
Bit7:
MASTER: SMBus Master/Slave Indicator.
This read-only bit indicates when the SMBus is operating as a master.
0: SMBus operating in Slave Mode.
1: SMBus operating in Master Mode.
Bit6:
TXMODE: SMBus Transmit Mode Indicator.
This read-only bit indicates when the SMBus is operating as a transmitter.
0: SMBus in Receiver Mode.
1: SMBus in Transmitter Mode.
Bit5:
STA: SMBus Start Flag.
Write:
0: No Start generated.
1: When operating as a master, a START condition is transmitted if the bus is free (If the bus
is not free, the START is transmitted after a STOP is received or a free timeout is detected).
If STA is set by software as an active Master, a repeated START will be generated after the
next ACK cycle.
Read:
0: No Start or repeated Start detected.
1: Start or repeated Start detected.
Bit4:
STO: SMBus Stop Flag.
Write:
As a master, setting this bit to ‘1’ causes a STOP condition to be transmitted after the next
ACK cycle. STO is cleared to ‘0’ by hardware when the STOP is generated.
As a slave, software manages this bit when switching from Slave Receiver to Slave Trans-
mitter mode. See Section 13.5.4 for details.
Read:
0: No Stop condition detected.
1: Stop condition detected (if in Slave Mode) or pending (if in Master Mode).
Bit3:
ACKRQ: SMBus Acknowledge Request.
This read-only bit is set to logic 1 when the SMBus has received a byte and needs the ACK
bit to be written with the correct ACK response value.
Bit2:
ARBLOST: SMBus Arbitration Lost Indicator.
This read-only bit is set to logic 1 when the SMBus loses arbitration while operating as a
transmitter. A lost arbitration while a slave indicates a bus error condition.
Bit1:
ACK: SMBus Acknowledge Flag.
This bit defines the outgoing ACK level and records incoming ACK levels. It should be writ-
ten each time a byte is received (when ACKRQ=1), or read after each byte is transmitted.
0: A "not acknowledge" has been received (if in Transmitter Mode) OR will be transmitted (if
in Receiver Mode).
1: An "acknowledge" has been received (if in Transmitter Mode) OR will be transmitted (if in
Receiver Mode).
Bit0:
SI: SMBus Interrupt Flag.
This bit is set by hardware under the conditions listed in Table 13.3. SI must be cleared by
software. While SI is set, SCL is held low and the SMBus is stalled.
R
R/W
R
R/W
Reset Value
MASTER TXMODE
STA
STO
ACKRQ ARBLOST
ACK
SI
00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
(bit addressable)
0xC0
SMB0CN: SMBus Control
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相關代理商/技術參數
參數描述
C8051F300-TB-K 功能描述:BOARD PROTOTYPING W/C8051F300 制造商:silicon labs 系列:- 零件狀態(tài):在售 板類型:評估平臺 類型:MCU 8-位 核心處理器:8051 操作系統(tǒng):- 平臺:- 配套使用產品/相關產品:C8051F30x 安裝類型:固定 內容:板 標準包裝:1
C8051F301 功能描述:8位微控制器 -MCU 8KB 2%osc RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
C8051F301-GM 功能描述:8位微控制器 -MCU 8KB 11P MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
C8051F301-GMR 功能描述:8位微控制器 -MCU 8KB 11P MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
C8051F301-GS 功能描述:8位微控制器 -MCU 8KB Flash 2%osc RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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