 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
ST7MC1K2 数据表(PDF) 205 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
ST7MC1K2 数据表(HTML) 205 Page - STMicroelectronics |
|
|
205 / 371 page  Obsolete Product(s) - Obsolete Product(s) ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto On-chip peripherals 205/371 For complete flexibility, the possibility of sampling at fSCF high frequency during the ON time of the PWM signal is also available when the SPLG bit is set as if there is a delay value in the DS[3:0] bits. This means that when the sampling is to be performed, after the delay a sampling window at fSCF frequency is opened until the next OFF time of the PWM signal. The sampling out interrupt is generated if the delay added is longer than the duty cycle of the PWM signal. As the SPLG bit is set and a value has been put in the DS[3:0] bits, no minimum off time is required for the PWM signal and it is automatically set to 0µs in current mode. A true 100% duty cycle can be also set in the 12-bit Timer in voltage mode. Figure 87 shows in detail the sampling at fSCF high frequency during ON time. Figure 85. Adding the delay to sample during ON time for Z detection Figure 86. Sampling out interrupt generation In conclusion, there are four sampling types that are available for Z event detection in sensorless mode. 1. Sampling at the end of the OFF time of the PWM signal at the PWM frequency. 2. Sampling, at a programmable frequency independent of the PWM state (during ON time or OFF time of the signal). Sampling is done at fSCF (see Table 166). 3. Sampling during the ON time of the PWM signal by adding a delay at PWM frequency. 4. Sampling, at a programmable frequency during the ON time (addition of a programmable delay) of the PWM signal. Sampling is done at fSCF (see Table 166). Note: 1 The sampling type is applied only for Z event detection after the D event has occurred. Whatever the sampling type for Z event detection, the sampling of the signal for D event detection is always done at the selected fSCF frequency (see Table 166), independently of the PWM signal (either during ON or OFF time). Table 92 explains the different sampling types in sensorless and in sensor mode. 2 When the MOE bit in the MCRA register is reset (MCOx outputs in reset state), and the SR bit in the MCRA register is reset (sensorless mode) and the SPLG bit in the MCRC register PWM OFF time Current sample DS[3:0] New sample TSampling PWM signal DS[3:0] DS[3:0] TSampling PWM signal New sample during next OFF time. Sample not taken into account. SO interrupt generated. SO SO To interrupt generator PWM OFF time Current sample Obsolete Product(s) - Obsolete Product(s) |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
