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参数资料
型号： ST72F60E1M1
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO24
封装： 0.300 INCH, LEAD FREE, PLASTIC, SOP-24
文件页数： 119/139页
文件大小： 1993K
代理商： ST72F60E1M1
Serial communications interface (SCI)
ST7260xx
80/139
clock occurs just before the pin value changes, the samples would then be out of sync by
~4 s. This means the entire bit length must be at least 40 s (36s for the 10th sample +
4 s for synchronization with the internal sampling clock).
Clock deviation causes
The causes which contribute to the total deviation are:
●
DTRA: Deviation due to transmitter error (Local oscillator error of the transmitter or the
transmitter is transmitting at a different baud rate).
●
DQUANT: Error due to the baud rate quantisation of the receiver.
●
DREC: Deviation of the local oscillator of the receiver: This deviation can occur during
the reception of one complete SCI message assuming that the deviation has been
compensated at the beginning of the message.
●
DTCL: Deviation due to the transmission line (generally due to the transceivers)
All the deviations of the system should be added and compared to the SCI clock tolerance:
DTRA + DQUANT + DREC + DTCL < 3.75%
Noise error causes
See also description of Noise error in Receiver on page 76.
Start bit
The noise flag (NF) is set during start bit reception if one of the following conditions occurs:
Note:
1
A valid falling edge is not detected. A falling edge is considered to be valid if the 3
consecutive samples before the falling edge occurs are detected as '1' and, after the falling
edge occurs, during the sampling of the 16 samples, if one of the samples numbered 3, 5 or
7 is detected as a “1”.
2
During sampling of the 16 samples, if one of the samples numbered 8, 9 or 10 is detected as
a “1”.
Therefore, a valid Start Bit must satisfy both the above conditions to prevent the Noise Flag
getting set.
Data bits
The noise flag (NF) is set during normal data bit reception if the following condition occurs:
●
During the sampling of 16 samples, if all three samples numbered 8, 9 and10 are not
the same. The majority of the 8th, 9th and 10th samples is considered as the bit value.
Therefore, a valid Data Bit must have samples 8, 9 and 10 at the same value to prevent the
Noise Flag getting set.
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相关代理商/技术参数
参数描述
ST72F60E2M1 功能描述:8位微控制器 -MCU ST7262 Lo Spd USB 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F60K1U1 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F60K1U1TR 功能描述:8位微控制器 -MCU ST7262 Lo Spd USB 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F60K2B1 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F60K2U1TR 功能描述:8位微控制器 -MCU ST7262 Lo Spd USB 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
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