- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98146 > ST72T141K2MARE (STMICROELECTRONICS) 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34 PDF資料下載
參數(shù)資料
| 型號(hào)： | ST72T141K2MARE |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34 |
| 封裝： | 0.300 INCH, LEAD FREE, PLASTIC, SOP-34 |
| 文件頁數(shù)： | 87/131頁 |
| 文件大?。?/td> | 3096K |
| 代理商： | ST72T141K2MARE |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁當(dāng)前第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁
ST72141K2-Auto
59/131
MOTOR CONTROLLER (Cont’d)
8.1.4.3 PWM Manager
The PWM manager controls the motor via the six
output channels in voltage mode or current mode
depending on the V0C1 bit in the MCRA register.
A block diagram of this part is given in Figure 36.
Voltage Mode
In Voltage mode (V0C1 bit = ‘0’), the PWM is gen-
erated by the 16-bit A Timer.
Its duty cycle is programmed by software (refer to
Section 8.3 16-BIT TIMER) as required by the ap-
plication (speed regulation for example).
The current comparator is used for safety purpos-
es as a current limitation. For this feature, the de-
tected current must be present on the MCCFI pin
and the current limitation must be present on pin
OCP1A. This current limitation is fixed by a voltage
reference depending on the maximum current ac-
ceptable for the motor. This current limitation is
generated with the VDD voltage by means of an
external divider but can also be adjusted with an
external reference voltage (< 3.7 V). The external
components are adjusted by the user depending
on the application needs. In Voltage mode, it is
mandatory to set a current limitation.
In sensorless mode the BEMF zero crossing is
done during the PWM off time.
The PWM signal is directed to the channel manag-
er that connects it to the programmed outputs (see
Current Mode
In current mode, the PWM output signal is gener-
ated by a combination of the output of the meas-
urement window generator (see Figure 37) and
the output of the current comparator, and is direct-
ed to the output channel manager as well (Figure
The current reference is provided to the compara-
tor by the PWM output of the 16-bit Timer (0.25%
accuracy), filtered through a RC filter (external ca-
pacitor on pin OCP1A and an internal voltage di-
vider 30K and 70K).
The detected current input must be present on the
MCCFI pin.
To avoid spurious commutations due to parasitic
noise after switching on the PWM, a 2.5-s filter
can be applied on the comparator output by set-
ting the CFF bit in the MCRB register.
The On state of the resulting PWM starts at the
end of the measurement window (rising edge),
and ends either at the beginning of the next meas-
urement window (falling edge), or when the cur-
rent level is reached.
Figure 36. Current Feedback
MCCFI
2.5-s Filter
VCREF
R1
R2
16-bit Timer - PWM
OCP1A
CEXT
Common Mode = VDD - (1,4...1,0)V
VCREF MAX = VDD - 1,3 V
Power down mode
To Phase State
V0C1 bit
CFF bit
Sampling frequency
+
-
Control
MCRA Register
MCRA
(V)
R1ext
R2ext
VDD
(V)
(I)
Register
LEGEND:
(I): Current mode
(V): Voltage mode
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST7FL09Y0MATRE | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
| ST7FL09Y0MBE | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
| ST7FL05Y0MAE | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
| ST7FL05Y0MBTRE | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
| ST7FL05Y0MATRE | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST72T212G2B6 | 功能描述:8位微控制器 -MCU OTP EPROM 8K SPI 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 |
| ST72T212G2M6 | 功能描述:8位微控制器 -MCU OTP EPROM 8K SPI 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 |
| ST72T213G1B6 | 功能描述:8位微控制器 -MCU OTP EPROM 4K SPI 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 |
| ST72T213G1M6 | 功能描述:8位微控制器 -MCU OTP EPROM 4K SPI 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 |
| ST72T251G1B6 | 功能描述:8位微控制器 -MCU OTP EPROM 4K SPI/I2C 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。