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DAC7716SPFBR датащи(PDF) 11 Page - Texas Instruments |
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DAC7716SPFBR датащи(HTML) 11 Page - Texas Instruments |
11 / 41 page Case5:ReadbackforStand-alonemode. t 8 t 4 t 1 t 2 t 7 t 3 t 6 t 5 BIT23 BIT22 InputWordSpecifiesRegistertobeRead WriteNOPCommand DatafromtheSelectedRegister BIT0 BIT23 BIT23 BIT22 BIT22 BIT1 BIT1 BIT0 BIT0 InputDataRegisterUpdated CS SCLK SDI SDO LDAC t F t R Low =Don’tCare Bit23=MSB Bit0=LSB t 11 t 12 t 13 TIMING CHARACTERISTICS For Figure 2 to Figure 3 (1) (2) (3) DAC7716 www.ti.com ........................................................................................................................................... SBAS463A – AUGUST 2009 – REVISED SEPTEMBER 2009 Figure 3. SPI Timing for Readback Operation in Stand-Alone Mode At TA = –40°C to +105°C, unless otherwise noted. 2.7V ≤ DVDD ≤ 5.5V, 2.7V ≤ DVDD ≤ 3.6V, 3.6V < DVDD ≤ 5.5V, IOVDD = 1.8V 2.7V ≤ IOVDD ≤ DVDD 2.7V ≤ IOVDD ≤ DVDD PARAMETER MIN MAX MIN MAX MIN MAX UNIT fSCLK Clock frequency 15 20 25 MHz t1 SCLK cycle time 66 50 40 ns t2 SCLK high time 33 25 20 ns t3 SCLK low time 33 25 20 ns t4 CS falling edge to SCLK falling edge(4) 25 22 17 ns t5 Input data setup time 5 5 5 ns t6 Input data hold time 5 5 5 ns t7 SCLK falling edge to CS rising edge 15 12 10 ns t8 CS high time 60 50 30 ns t9 CS rising edge to LDAC falling edge 30 25 20 ns t10 LDAC pulse width 25 20 15 ns t11 SDO data valid from SCLK rising edge 25 20 15 ns SDO data hold time from SCLK falling t12 30 25 20 ns edge t13 SDO data valid from CS falling edge 20 17 12 ns RST pulse width 25 20 15 ns (1) Specified by design and characterization. (2) Sample tested during the initial release and after any redesign or process changes that may affect these parameters. (3) All input signals are specified with tR = tF = 2ns (10% to 90% of IOVDD) and timed from a voltage level of IOVDD/2. (4) The first SCLK edge after CS goes low must be a falling edge. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): DAC7716 |
Аналогичный номер детали - DAC7716SPFBR |
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Аналогичное описание - DAC7716SPFBR |
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