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參數資料
| 型號： | SAF-C515A-LM |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 18 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | METRIC, PLASTIC, QFP-80 |
| 文件頁數： | 22/58頁 |
| 文件大?。?/td> | 634K |
| 代理商： | SAF-C515A-LM |
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Semiconductor Group
29
1997-10-01
C515A
Serial Interface (USART)
The serial port is full duplex and can operate in four modes (one synchronous mode, three
asynchronous modes) as illustrated in table 5. The possible baudrates can be calculated using the
formulas given in table 5.
For clarification some terms regarding the difference between “baud rate clock” and “baud rate”
should be mentioned. In the asynchronous modes the serial interfaces require a clock rate which is
16 times the baud rate for internal synchronization. Therefore, the baud rate generators/timers have
to provide a “baud rate clock” (output signal in figure 13 to the serial interface which - there divided
by 16 - results in the actual “baud rate”. Further, the abbreviation fOSC refers to the oscillator
frequency (crystal or external clock operation).
The variable baud rates for modes 1 and 3 of the serial interface can be derived from either timer 1
or a dedicated baud rate generator (see figure 13).
Table 5
USART Operating Modes
Mode
SCON
Description
SM0
SM1
0
Shift register mode
Serial data enters and exits through R
×D/ T×D outputs the shift
clock; 8-bit are transmitted/received (LSB first); fixed baud rate
1
0
1
8-bit UART, variable baud rate
10 bits are transmitted (through T
×D) or received (at R×D)
2
1
0
9-bit UART, fixed baud rate
11 bits are transmitted (through T
×D) or received (at R×D)
3
1
9-bit UART, variable baud rate
Like mode 2
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相關代理商/技術參數 |
參數描述 |
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| SAFC515C8EM | 制造商:Infineon Technologies AG 功能描述:8bit microcontrollerSAF-C515C-8EM MQFP80 |
| SAF-C515C-8EM | 制造商:Infineon Technologies AG 功能描述:IC 8BIT MCU OTP SMD 制造商:Infineon Technologies AG 功能描述:IC, 8BIT MCU OTP, SMD |
| SAFC515C-8EM | 制造商:Infineon Technologies AG 功能描述:IC 8BIT CPU SMD MQFP80 515 |
| SAF-C515C-8EM CA | 功能描述:8位微控制器 -MCU 8 BIT OTP 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 |
| SAFC515C8EM-BC | 制造商:Infineon Technologies AG 功能描述:MCU 8-Bit C500 8051 CISC 64KB EPROM 5V 80-Pin MQFP |
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