 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
ST7538Q 데이터시트(PDF) 37 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
ST7538Q 데이터시트(HTML) 37 Page - STMicroelectronics |
|
|
37 / 44 page  ST7538Q Auxiliary analog and digital functions 37/44 Figure 21. Reset and watchdog timing 6.4 Zero crossing detection The Mains Voltage Zero Crossing can be detected, through a proper connection of ZCIN to the Mains. ZCIN comparator has a threshold fixed at SGND. ZCOUT is a TTL Output forced High after a positive zero-crossing transition, and low after a negative one. Setting the Bit 11 inside the Control Register to “1” the transmission is automatically synchronized to the mains positive zero-crossing transition. This function is achieved turning on the PLI when RX/TX is low and delaying the CLR/T first transition until the first zero- crossing event. The automatic synchronization procedure can work only if the synchronous interface is programmed. If asynchronous interface is in use the Zero Crossing synchronization can be achieved managing the ZCOUT line. Figure 22. Synchronous zero-crossing transmission TWO TRSTO TWD TWM TRSTO RSTO WD D03IN1410 t ZCIN RxTx CLR/T TxD ZCOUT ZCDEL D03IN1423 |
|
링크 URL |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크 투 데이터시트 | 링크교환 | 제조사별 검색 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 |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
