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DS89C430-ENL Datasheet(PDF) 9 Page - Maxim Integrated Products |
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DS89C430-ENL Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 48 page DS89C430/DS89C440/DS89C450 Ultra-High-Speed Flash Microcontrollers 9 of 48 EXTERNAL CLOCK CHARACTERISTICS (VCC = 4.5V to 5.5V, TO = -40∞C to +85∞C.) PARAMETER SYMBOL MIN MAX UNITS Clock High Time tCHCX 10 ns Clock Low Time tCLCX 10 ns Clock Rise Time tCLCH 5 ns Clock Fall Time tCHCL 5 ns SERIAL PORT MODE 0 TIMING CHARACTERISTICS (VCC = 4.5V to 5.5V, TO = -40∞C to +85∞C.) (Figure 4) 33MHz VARIABLE PARAMETER SYMBOL CONDITIONS MIN MAX MIN MAX UNITS SM2 = 0 360 12tCLCL ns Clock Cycle Time tXLXL SM2 = 1 120 4tCLCL ns SM2 = 0 200 10tCLCL - 100 ns Output Data Setup to Clock Rising tQVXH SM2 = 1 40 3tCLCL - 10 ns SM2 = 0 50 2tCLCL - 10 ns Output Data Hold to Clock Rising tXHQX SM2 = 1 20 tCLCL - 100 SM2 = 0 0 0 ns Input Data Hold After Clock Rising tXHDX SM2 = 1 0 0 SM2 = 0 200 10tCLCL - 100 ns Clock Rising Edge to Input Data Valid tXHDV SM2 = 1 40 3tCLCL - 50 ns Note: SM2 is the serial port 0 mode bit 2. When serial port 0 is operating in mode 0 (SM0 = SM1 = 0), SM2 determines the number of crystal clocks in a serial port clock cycle. |
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