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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SPEAR1340 датащи(PDF) 143 Page - STMicroelectronics |
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SPEAR1340 датащи(HTML) 143 Page - STMicroelectronics |
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143 / 200 page  SPEAr1340 Electrical characteristics Doc ID 023063 Rev 4 143/200 AC characteristics Table 50 shows the AC characteristics of IOTYPE4 buffers. Figure 11. IOTYPE4 input test setup Figure 12. IOTYPE4 output test setup 1. Parasitic capacitance and inductance are not shown here, but taken into account with measurement setup. For values of L and C, please refer to Table 49: IOTYPE4 DC characteristics. Table 50. Input (I/O) pin capacitance Symbol Parameter Conditions Min Typ Max Unit Receiver characteristics Cz Capacitive load at ZI – – – 1 pF Duty cycle Duty cycle at ZI (1) 1. With input duty cycle of 50% at I/O. 45 – 55 % Driver characteristics CL Capacitive load at I/O – – – 40 pF Frequency Operating frequency (2) 2. Output swing from 2.4V to 0.4 V is guaranteed for this operating frequency range. – – 100 MHz Duty cycle Duty cycle at I/O (3) 3. With input duty cycle of 50% at A. 45 – 55 % IO pad ZI CZ A IO pad CL |
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