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DS89C420-QCL Datasheet(PDF) 4 Page - Maxim Integrated Products |
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DS89C420-QCL Datasheet(HTML) 4 Page - Maxim Integrated Products |
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4 / 47 page  DS89C420 Ultra-High-Speed Microcontroller 4 of 47 AC CHARACTERISTICS (VCC = 4.5V to 5.5V; TA = -40°C to +85°C)* (Figure 1, Figure 2, and Figure 3) 1 CYCLE PAGE MODE 1 2 CYCLE PAGE MODE 1 4 CYCLE PAGE MODE 1 PAGE MODE 2 NON-PAGE MODE PARAMETER SYMBOL MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX UNITS 0 25 0 25 0 25 0 25 0 25 External Oscillator (25MHz, 33MHz) 0 33 0 33 0 33 0 33 0 33 1 25 1 25 1 25 1 25 1 25 External Crystal (25MHz, 33MHz) 1 / tCLCL 1 33 1 33 1 33 1 33 1 33 MHz ALE Pulse Width (Note 2) tLHLL 0.5tCLCL - 2 + tSTC3 tCLCL - 2 + tSTC3 2tCLCL - 4 + tSTC3 1.5tCLCL - 5 + tSTC3 1.5tCLCL - 5 + tSTC3 ns Port 0 Instruction Address Valid to ALE Low tAVLL tCLCL - 2 0.5tCLCL - 2 ns Port 2 Instruction Address Valid to ALE Low tAVLL2 0.5tCLCL - 4 0.5tCLCL - 4 1.5tCLCL - 5 0.5tCLCL - 2 tCLCL - 2 ns Port 0 Data AddressValid to ALE Low tAVLL3 tCLCL - 2 + tSTC3 0.5tCLCL - 2 + tSTC3 ns Program Address Hold After ALE Low tLLAX 0.5tCLCL - 8 1.5tCLCL - 8 2.5tCLCL - 8 0.5tCLCL - 8 0.5tCLCL - 8 ns Address Hold After ALE Low MOVX Write tLLAX2 0.5tCLCL - 8 + tSTC4 1.5tCLCL - 8 + tSTC4 2.5tCLCL - 8 + tSTC4 0.5tCLCL - 8 + tSTC4 0.5tCLCL - 8 + tSTC4 ns Address Hold After ALE Low MOVX Read tLLAX3 0.5tCLCL - 8 + tSTC4 1.5tCLCL - 8 + tSTC4 2.5tCLCL - 8 + tSTC4 0.5tCLCL - 8 + tSTC4 0.5tCLCL - 8 + tSTC4 ns ALE Low to Valid Instruction In tLLIV 2.5tCLCL - 20 2.5tCLCL - 20 ns ALE Low to PSEN Low tLLPL 1.5tCLCL - 6 0.5tCLCL - 6 ns PSEN Pulse Width for Program Fetch tPLPH tCLCL - 5 tCLCL - 5 2tCLCL - 5 tCLCL - 5 2tCLCL - 5 ns |
Similar Part No. - DS89C420-QCL |
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Similar Description - DS89C420-QCL |
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