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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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STM1404CSNDQ6F Arkusz danych(PDF) 9 Page - STMicroelectronics |
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STM1404CSNDQ6F Arkusz danych(HTML) 9 Page - STMicroelectronics |
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9 / 35 page  STM1404 Description 9/36 Figure 4. Hardware hookup 1. Normal mode: low when VOUT is internally switched to VCC and high when VOUT is internally switched to battery. 2. Capacitor (C) is typically ≥ 10 µF. 3. Open drain 4. Diode is required for battery reverse charge protection. 5. VREF only for STM1404A; VTPU for STM1404B/C Figure 5. Tamper pin (TP1 or TP3) normally high (NH) external hookup (switch closed) 1. R typical is 10 M Ω. Resistors must be protected against conductive materials. VCC AI09690a VCC MR VOUT VREF (5) or VTPU VCCSW (1) VCC LPSRAM PFI C (2) 0.1 μF 1.0 μF STM1404 PFO (3) RST (3) BLD (3) To Microprocessor Reset Unregulated Voltage Regulator VCC VIN R1 R2 Push-Button From Actuator Device (e.g., Switches, Wire Mesh) BAT54J (4) VBAT TP1 TP2 TP3 TP4 To Microprocessor NMI To Microprocessor SAL (3) To Physical Tamper Pins TPX To ADC AI09698a VOUT (STM1404A) or VTPU (STM1404B/C) R (1) Switch Normally Closed; Tamper Detection on Open TP1 or TP3 |
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