參數(shù)資料
型號: C8051F226-GQ
廠商: Silicon Laboratories Inc
文件頁數(shù): 22/146頁
文件大?。?/td> 0K
描述: IC 8051 MCU 8K FLASH 48TQFP
產(chǎn)品培訓(xùn)模塊: Serial Communication Overview
標(biāo)準(zhǔn)包裝: 250
系列: C8051F2xx
核心處理器: 8051
芯體尺寸: 8-位
速度: 25MHz
連通性: SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 32x8b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 48-TQFP
包裝: 托盤
產(chǎn)品目錄頁面: 623 (CN2011-ZH PDF)
配用: 336-1241-ND - DEV KIT F220/221/226/230/231/236
其它名稱: 336-1240
C8051F2xx
118
Rev. 1.6
16.1. UART Operational Modes
The UART provides four operating modes (one synchronous and three asynchronous) selected by setting
configuration bits in the SCON register. These four modes offer different baud rates and communication
protocols. The four modes are summarized in Table 16.1 below. Detailed descriptions follow.
16.1.1. Mode 0: Synchronous Mode
Mode 0 provides synchronous, half-duplex communication. Serial data is transmitted and received on the
RX pin. The TX pin provides the shift clock for both transmit and receive. The MCU must be the master
since it generates the shift clock for transmission in both directions (see the interconnect diagram in
Eight data bits are transmitted/received, LSB first (see the timing diagram in Figure 16.3). Data transmis-
sion begins when an instruction writes a data byte to the SBUF register. The TI Transmit Interrupt Flag
(SCON.1) is set at the end of the eighth bit time. Data reception begins when the REN Receive Enable bit
(SCON.4) is set to logic 1 and the RI Receive Interrupt Flag (SCON.0) is cleared. One cycle after the
eighth bit is shifted in, the RI flag is set and reception stops until software clears the RI bit. An interrupt will
occur if enabled when either TI or RI are set.
The Mode 0 baud rate is system clock frequency divided by twelve.
Figure 16.2. UART Mode 0 Interconnect
Figure 16.3. UART Mode 0 Timing Diagram
Table 16.1. UART Modes
Mode
Synchronization
Baud Clock
Data Bits
Start/Stop Bits
0
Synchronous
SYSCLK/12
8
None
1
Asynchronous
Timer 1 or Timer 2 Overflow
8
1 Start, 1 Stop
2
Asynchronous
SYSCLK/32 or SYSCLK/64
9
1 Start, 1 Stop
3
Asynchronous
Timer 1 or Timer 2 Overflow
9
1 Start, 1 Stop
Shift
Reg.
CLK
C8051Fxxx
RX
TX
DATA
8 Extra Outputs
D1
D0
D2
D3
D4
D5
D6
D7
RX (data out)
MODE 0 TRANSMIT
D0
MODE 0 RECEIVE
RX (data in)
D1
D2
D3
D4
D5
D6
D7
TX (clk out)
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C8051F226-GQR 功能描述:8位微控制器 -MCU 8KB 8ADC 1KRam 48Pin 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
C8051F226R 功能描述:8位微控制器 -MCU T-81280 Ram 48 Pin 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
C8051F226-TB 功能描述:插座和適配器 With C8051F226 MCU RoHS:否 制造商:Silicon Labs 產(chǎn)品:Adapter 用于:EM35x
C8051F23 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8K Flash, 256 RAM, 48-Pin MCU
C8051F230 功能描述:8位微控制器 -MCU 8KB 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