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DAC1282 датащи(PDF) 7 Page - Texas Instruments |
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DAC1282 датащи(HTML) 7 Page - Texas Instruments |
7 / 43 page SCLK CS DIN DOUT t SCLK t CSSC t DIHD t CSH t CSDOD t DIST t SPWH t SPWL t CSDOZ t DOHD t DOPD B7 B6 B5 B4 B3 B2 B1 B0 B7 t SCCS DAC1282 www.ti.com SBAS490 – DECEMBER 2011 SPI TIMING CHARACTERISTICS Figure 1. Serial Interface Timing TIMING REQUIREMENTS: SERIAL INTERFACE TIMING At TA = –40°C to +85°C and DVDD = 1.65 V to 3.6 V, unless otherwise noted. SYMBOL DESCRIPTION MIN MAX UNIT tCSSC CS low to first SCLK: setup time(1) 30 ns tSCLK SCLK period 120 ns tSPWH SCLK pulse width: high 50 ns 50 ns tSPWL SCLK pulse width: low(2) 218 tCLK tDIST Valid DIN to SCLK high: setup time 40 ns tDIHD Valid DIN to SCLK high: hold time 20 ns tDOPD SCLK low to valid new DOUT: propagation delay(3) 40 ns tDOHD SCLK low to DOUT invalid: hold time 0 ns tCSDOD CS low to DOUT driven: propagation delay(3) 40 ns tCSDOZ CS high to DOUT Hi-Z: propagation delay 20 ns tCSH CS high pulse 50 ns tSCCS Last SCLK falling edge to CS high 0 ns (1) CS can be tied low. (2) Holding SCLK low longer than 218 fCLK cycles resets the SPI interface. (3) DOUT load = 20 pF || 100 k Ω to DGND. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): DAC1282 |
Аналогичный номер детали - DAC1282 |
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Аналогичное описание - DAC1282 |
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