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ATSAM3703 数据表(PDF) 17 Page - ATMEL Corporation |
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ATSAM3703 数据表(HTML) 17 Page - ATMEL Corporation |
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17 / 36 page ![]() 17 6237A–DRMSD–29-May-06 ATSAM3703 8.2.1.2 SDRAM OR GPIO OPERATION When using the SSTL_2 pad as SDRAM or GPIO signals, it is recommended to use the sche- matic in Figure 8-2. Figure 8-2. SSTL_2 in SDRAM or GPIO Operation Schematic Notes: 1. VC25 = 3.3V 2. VREF = 1.75V Table 8-3. Parameters Symbol Parameter Min Typ Max Unit VC25 Supply voltage 3 3.3 3.6 V VREF Reference voltage VC25/2 - 0.04 1.75 VC25/2 + 0.04 V Output Buffer GND VOUT VIN VREF VC25 Receiver |
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