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參數(shù)資料
| 型號(hào)： | SAB-C505A-4EM |
| 廠商： | SIEMENS A G |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, MQFP-44 |
| 文件頁(yè)數(shù)： | 35/85頁(yè) |
| 文件大?。?/td> | 335K |
| 代理商： | SAB-C505A-4EM |
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Semiconductor Group
35
1997-12-01
C505 / C505C
C505A / C505CA
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 8
.
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 14
to the serial interface which - there divided
by 16 - results in the actual "baud rate". Further, the abbrevation f
OSC
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 either from timer 1
or from a decdicated baud rate generator (see
figure 14
).
Table 8
USART Operating Modes
Mode
SCON
Description
SM0
SM1
0
0
0
Shift register mode, fixed baud rate
Serial data enters and exits through R
×
D; T
×
D outputs the shift
clock; 8-bit are transmitted/received (LSB first)
1
0
1
8-bit UART, variable baud rate
10 bits are transmitted (through T
×
D) or received (at R
×
D)
9-bit UART, fixed baud rate
11 bits are transmitted (through T
×
D) or received (at R
×
D)
9-bit UART, variable baud rate
Like mode 2
2
1
0
3
1
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAF-C505A-4EM | 8-Bit CMOS Microcontroller |
| SAF-C505-2RM | 8-Bit CMOS Microcontroller |
| SAB-C505-2RM | 8-Bit CMOS Microcontroller |
| SAB-C513AO | 8-bit CMOS Microcontroller |
| SAF-C513AO | 8-bit CMOS Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB-C505A-4EM-BA | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAB-C505C-2RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C505CA-4EM | 制造商:Infineon Technologies 功能描述:Bulk |
| SAB-C505CA-4EM 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(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)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 |
| SAB-C505CA-4EM CATR | 制造商:Infineon Technologies AG 功能描述: |
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