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ST52T440FMPY Datasheet(PDF) 77 Page - STMicroelectronics |
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ST52T440FMPY Datasheet(HTML) 77 Page - STMicroelectronics |
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77 / 94 page  ST52T400/T440/E440/T441 77/94 11.6 Clock and Timing Characteristics Operating Conditions: VDD=5V ±5%, TA=0/125 °C, unless otherwise specified Figure 11.7 I/O Rise and Fall Timing Table 11.8 General Timing Parameters Symbol Parameters Test Condition Min Typ. Max Unit fosc Oscillator Frequency 1 20 MHz tCLH Clock High 25 250 nS tCLL Clock Low 25 250 tSET Setup See Fig. 11.6 5 tHLD Hold See Fig. 11.6 5 tWRESET Minimum Reset Pulse fosc=20MHz 100 tWINT Minimum External fosc=20MHz 100 tIR Input Rise Time See Fig. 11.7 15 tIF Input Fall Time See Fig. 11.7 15 tOR Output Rise Time CLOAD=10pF 10 tOF Output Fall CLOAD=10pF 10 Figure 11.6 Data Input Timing tCLL tCLH 50% 50% 50% tSET tHLD Clock Data CP t |
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