參數(shù)資料
型號: C8051F012
廠商: Silicon Laboratories Inc
文件頁數(shù): 26/171頁
文件大?。?/td> 0K
描述: IC 8051 MCU 32K FLASH 32LQFP
標(biāo)準(zhǔn)包裝: 250
系列: C8051F01x
核心處理器: 8051
芯體尺寸: 8-位
速度: 20MHz
連通性: SMBus(2 線/I²C),SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 8
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b; D/A 2x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 32-LQFP
包裝: 托盤
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
16.6.5. Status Register
The SMB0STA Status register holds an 8-bit status code indicating the current state of the SMBus. There are 28
possible SMBus states, each with a corresponding unique status code. The five most significant bits of the status
code vary while the three least-significant bits of a valid status code are fixed at zero when SI = 1. Therefore, all
possible status codes are multiples of eight. This facilitates the use of status codes in software as an index used to
branch to appropriate service routines (allowing 8 bytes of code to service the state or jump to a more extensive
service routine).
For the purposes of user software, the contents of the SMB0STA register is only defined when the SI flag is logic 1.
Software should never write to the SMB0STA register. Doing so will yield indeterminate results. The 28 SMBus
states, along with their corresponding status codes, are given in Table 16.1.
Figure 16.8. SMB0STA: SMBus Status Register
R/W
Reset Value
STA7
STA6
STA5
STA4
STA3
STA2
STA1
STA0
11111000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
0xC1
Bits7-3: STA7-STA3: SMBus Status Code.
These bits contain the SMBus Status Code. There are 28 possible status codes. Each
status code corresponds to a single SMBus state. A valid status code is present in
SMB0STA when the SI flag (SMB0CN.3) is set. The content of SMB0STA is not defined
when the SI flag is logic 0. Writing to the SMB0STA register at any time will yield
indeterminate results.
Bits2-0: STA2-STA0: The three least significant bits of SMB0STA are always read as logic 0 when
the SI flag is logic 1.
121
Rev. 1.7
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參數(shù)描述
C8051F012/005 制造商:Silicon Laboratories Inc 功能描述:
C8051F012-GQ 功能描述:8位微控制器 -MCU 32KB 10ADC 32P MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
C8051F012-GQR 功能描述:8位微控制器 -MCU 32KB 10ADC 32Pin MCU Tape and Reel RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
C8051F012-PX0005GQ 制造商:Silicon Laboratories Inc 功能描述:
C8051F012R 功能描述:8位微控制器 -MCU C 10Bit 32Pin RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT