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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L99LD02 데이터시트(PDF) 21 Page - STMicroelectronics |
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L99LD02 데이터시트(HTML) 21 Page - STMicroelectronics |
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21 / 66 page  DS12448 Rev 3 21/66 L99LD02 Functional description 64 4 Functional description 4.1 Operating modes Figure 9. Device state diagram Standby Mode V3V3<VPOR Low V_SPIconsumption Low VS consumption SPI Inactive Reset (transitionstate) Reset ofctrlregisters to default valueaccording to OTP settings Active Mode Device operates according to SPI ctrl register settings VDD Undervoltage or WD failure or EN = GOSTBY = 0 or SPI sequence: 1. UNLOCK = 1 2. EN = GOSTBY =1 Limp Home/ Standalone Mode Device operates according to OTP settings SPI active Note: ctrl registers can be written but are not active Dedicated SPI sequence: 1. WD_FAIL Read & Clear 2. UNLOCK = 1 3. EN = 1 and GOSTBY =0 Pre-Standby V3V3>VPOR Boost Disabled SPI Active CSN = High for more than tSTDBY tSTDBY tPRE-STDBY = tSTDBY tWAKEUP tTM_LOW = 200us |
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