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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STCF04TBR датащи(PDF) 17 Page - STMicroelectronics |
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STCF04TBR датащи(HTML) 17 Page - STMicroelectronics |
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17 / 43 page  STCF04 Detailed description Doc ID 022927 Rev 3 17/43 8.1.7 READY pin This pin can be used to monitor the voltage on the SuperCap by the microprocessor. The status of this pin has different meanings according to the current mode of operation of the STCF04. - Idle, Monitoring, Torch mode with TCHV_H=1: The READY pin goes LOW when the SuperCap voltage reaches the threshold voltage set by the VDC register, otherwise the READY pin is HIGH when VSuperCap goes below VDC voltage - 0.2 V of hysteresis. When READY is HIGH it means that it is necessary to recharge the SuperCap in order to be able to make a flash. - Torch mode with TCHV_H=0: The READY pin goes LOW when the SuperCap reaches 4.2 V and is HIGH when the SuperCap is below 4.2 V and Torch mode is not active. - FLASH: The READY pin goes LOW as soon as the SuperCap voltage reaches the threshold voltage set by the VDC register. It stays LOW until the SuperCap voltage decreases below 4.2 V and Flash mode is not active. This feature allows the user to perform multiple flashes. See Figure 4 below for details. Figure 4. Behavior of the READY pin in different modes Table 7. I²C address table ADD pin A7A6 A5A4 A3A2 A1A0 GND 0 11 00 00 R/W VBAT 0 11 00 01 R/W SDA 0 11 00 10 R/W SCL 0 11 00 11 R/W |
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