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參數(shù)資料
| 型號(hào)： | ST72F60E1M1 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO24 |
| 封裝： | 0.300 INCH, LEAD FREE, PLASTIC, SOP-24 |
| 文件頁(yè)數(shù)： | 119/139頁(yè) |
| 文件大?。?/td> | 1993K |
| 代理商： | ST72F60E1M1 |
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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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST72F60K2DIE1 | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, UUC |
| ST72F60K2DIE6 | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, UUC |
| ST72F651AR6T1 | 8-BIT, FLASH, MICROCONTROLLER, PQFP64 |
| ST72P60E2M1 | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 |
| ST7260E2M1/XXX | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 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 |
| 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 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 |
| 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 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 |
| 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 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 |
| 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 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 |
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