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ST93C66 Datasheet(PDF) 4 Page - STMicroelectronics |
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ST93C66 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 13 page Symbol Alt Parameter Test Condition Min Max Unit tSHCH tCSS Chip Select High to Clock High 50 ns tCLSH tSKS Clock Low to Chip Select High 100 ns tDVCH tDIS Input Valid to Clock High 100 ns tCHDX tDIH Clock High to Input Transition Temp. Range: grade 1 100 ns Temp. Range: grades 3, 6 200 ns tCHQL tPD0 Clock High to Output Low 500 ns tCHQV tPD1 Clock High to Output Valid 500 ns tCLSL tCSH Clock Low to Chip Select Low 0 ns tSLCH Chip Select Low to Clock High 250 ns tSLSH tCS Chip Select Low to Chip Select High Note 1 250 ns tSHQV tSV Chip Select High to Output Valid 500 ns tSLQZ tDF Chip Select Low to Output Hi-Z 200 ns tCHCL tSKH Clock High to Clock Low Note 2 250 ns tCLCH tSKL Clock Low to Clock High Note 2 250 ns tW tWP Erase/Write Cycle time 10 ms fC fSK Clock Frequency 0 1 MHz Notes: 1. Chip Select must be brought low for a minimum of 250 ns (tSLSH) between consecutive instruction cycles. 2. The Clock frequency specification calls for a minimum clock period of 1 µs, therefore the sum of the timings tCHCL +tCLCH must be greater or equal to 1 µs. For example, if tCHCL is 250 ns, then tCLCH must be at least 750 ns. Table 5. AC Characteristics (TA = 0 to 70 °C or –40 to 85°C; VCC = 4.5V to 5.5V or 3V to 5.5V) AI01428 C OP CODE OP CODE START S D OP CODE INPUT START tDVCH tSHCH tCLSH tCHCL tCLCH tCHDX Figure 4. Synchronous Timing, Start and Op-Code Input 4/13 ST93C66, ST93C67 |
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