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参数资料
| 型号： | SAF-C505C-L20M |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 20 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | PLASTIC, MQFP-44 |
| 文件页数： | 31/88页 |
| 文件大小： | 1013K |
| 代理商： | SAF-C505C-L20M |
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C505/C505C/C505A/C505CA
Data Sheet
33
12.00
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 7.
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 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 either from timer 1
or from a decdicated baud rate generator (see Figure 14).
Table 7
USART Operating Modes
Mode
SCON
Description
SM0
SM1
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)
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
相关PDF资料 |
PDF描述 |
|---|---|
| SAF-C505CA-L16M | 8-BIT, 16 MHz, MICROCONTROLLER, PQFP44 |
| SAH-C505-2R16M | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP44 |
| SAH-C505A-2R20M | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44 |
| SAH-C505A-4E20M | 8-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PQFP44 |
| SAH-C505C-L16M | 8-BIT, 16 MHz, MICROCONTROLLER, PQFP44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SAF-C505C-LM | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C505L | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-bit CMOS Microcontroller |
| SAF-C505L-4EM | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-bit CMOS Microcontroller |
| SAF-C505-LM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAFC5084EM | 制造商:Infineon Technologies AG 功能描述:MCU 8-bit C500 8051 CISC 32KB EPROM 5V 64-Pin MQFP |
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