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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM1403ASOQ6F датащи(PDF) 11 Page - STMicroelectronics |
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STM1403ASOQ6F датащи(HTML) 11 Page - STMicroelectronics |
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11 / 34 page  STM1403 Pin descriptions 11/35 2 Pin descriptions See Figure 1: Logic diagram and Table 2: Signal names for a brief overview of the signals connected to this device. 2.1 SAL, security alarm output (open drain) This signal can be generated when ANY of the following conditions occur: ● VINT > VHV, where VHV = upper voltage trip limit (4.2 V typ); and where VINT = VCC or VBAT; ● VINT < VLV, where VLV = lower voltage trip limit (2.0 V typ); and where VINT = VCC or VBAT; or ● When any of the physical tamper inputs, TP1 to TP4, change from their normal states to the opposite (i.e., intrusion of a physical enclosure). Note: 1 The default state of the SAL output during initial power-up is undetermined. 2 The alarm function will operate either with VCC on or when the part is internally switched from VCC to VBAT. 2.1.1 TP1, TP3 Physical tamper detect pin set normally to high (NH). They are connected externally through a closed switch or a high-impedance resistor to VOUT (in the case of STM1403A) or VTPU (in the case of STM1403B/C. A tamper condition will be detected when the input pin is pulled low (see Figure 5 and Figure 6). If not used, tie the pin to VOUT (for STM1403A) or VTPU (for STM1403B/C). 2.1.2 TP2, TP4 Physical tamper detect pin set normally to low (NL). They are connected externally through a high-impedance resistor or a closed switch to VSS. A tamper condition will be detected when the input pin is pulled high (see Figure 7 and Figure 8). If not used, tie the pin to VSS. 2.1.3 Vccsw, VCC switch output This output is low when VOUT (see Section 2.1.10: VOUT on page 13) is internally switched to VCC; in this mode it may be used to turn on an external p-channel MOSFET switch which can source an external device directly from VCC for currents greater than 80 mA (bypassing the STM1403). This pin goes high when VOUT is internally switched to VBAT and may be used as a “BATT ON” indicator. If a security alarm (SAL) is issued on tamper, then the state of the Vccsw pin is as follows: |
Аналогичный номер детали - STM1403ASOQ6F |
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Аналогичное описание - STM1403ASOQ6F |
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