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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST7571 датащи(PDF) 59 Page - Sitronix Technology Co., Ltd. |
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ST7571 датащи(HTML) 59 Page - Sitronix Technology Co., Ltd. |
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59 / 76 page  ST7571 Ver 1.5a 59/76 2009/7/21 13. TIMING CHARACTERISTICS System Bus Write Characteristics 8080 Series MPU Fig. 31 (VDD1 = 1.8V~3.3V, Ta =-30~85 °C ) Rating Item Signal Symbol Condition Min. Max. Units Address hold time tAH8 0 — Address setup time A0 tAW8 0 — System cycle time tCYC8 500 — Write L pulse width tCCLW 250 — Write H pulse width /WR tCCHW 250 — WRITE Data setup time tDS8 80 — WRITE Data hold time DB[7:0] tDH8 30 — ns l The input signal rise time and fall time (tr, tf) is specified at 15 ns or less. When the system cycle time is extremely fast, (tr + tf) ≤ (tCYC8 – tCCLW – tCCHW) is specified. l All timing is specified using 20% and 80% of VDD1 as the reference. l tCCLW is specified as the overlap between CSB being “L” and /WR being at the “L” level. |
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