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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M41T81S датащи(PDF) 25 Page - STMicroelectronics |
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M41T81S датащи(HTML) 25 Page - STMicroelectronics |
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25 / 31 page  M41T81S DC and AC parameters 25/31 Table 11. Power down/up AC characteristics Table 12. Power down/up trip points DC characteristics Figure 17. Bus timing requirements sequence Symbol Parameter(1)and(2) 1. VCC fall time should not exceed 5mV/µs. 2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.7 to 5.5V (except where noted). Min Typ Max Unit tPD SCL and SDA at VIH before Power Down 0 nS trec SCL and SDA at VIH after Power Up 10 µS Sym Parameter(1)and(2) 1. All voltages referenced to VSS. 2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.7 to 5.5V (except where noted). Min Typ Max Unit VPFD Power-fail Deselect 2.5 2.6 2.7 V Hysteresis 25 mV VSO Battery Back-up Switchover Voltage (VCC < VBAT; VCC < VPFD) VBAT < VPFD VBAT V VBAT > VPFD VPFD V Hysteresis 40 mV AI00589 SDA P tSU:STO tSU:STA tHD:STA SR SCL tSU:DAT tF tHD:DAT tR tHIGH tLOW tHD:STA tBUF S P |
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