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HT1620 Datasheet(PDF) 8 Page - Holtek Semiconductor Inc |
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HT1620 Datasheet(HTML) 8 Page - Holtek Semiconductor Inc |
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8 / 17 page  Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions tCS Serial Interface Reset Pulse Width (Figure 3) ¾ CS ¾ 250 ¾ ns tCLK WR,RD Input Pulse Width (Figure 1) 3V Write mode 3.34 ¾¾ ms Read mode 6.67 ¾¾ tr,tf Rise/Fall Time Serial Data Clock Width (Figure 1) 3V ¾¾ 120 ¾ ns tsu Setup Time for DATA to WR,RD Clock Width (Figure 2) 3V ¾¾ 120 ¾ ns th Hold Time for DATA to WR,RD Clock Width (Figure 2) 3V ¾¾ 120 ¾ ns tsu1 Setup Time for CS to WR,RD Clock Width (Figure 3) 3V ¾¾ 100 ¾ ns th1 Hold Time for CS to WR,RD Clock Width (Figure 3) 3V ¾¾ 100 ¾ ns HT1620 8 July 26, 1999 90% 50% 10% GN D WR , R D Cl o c k t f t r t CL K t CL K V DD Figure 1 50% VA L I D D A T A 50% DB W R , R D Cl o c k GN D t su t h V DD V DD GN D Figure 2 CS GN D 50 % 50 % FI R S T Cl o c k LA S T Cl o c k GN D WR , R D Cl o c k t su 1 t h1 t CS V DD V DD Figure 3 |
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