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ST7558 Datasheet(PDF) 39 Page - Sitronix Technology Co., Ltd. |
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ST7558 Datasheet(HTML) 39 Page - Sitronix Technology Co., Ltd. |
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39 / 56 page ![]() ST7558 Ver 2.3 39/56 2005/10/05 13. TIMING CHARACTERISTICS System Bus Read/Write Characteristics 1 (For the 8080 Series MPU) tAH8 tAW8 tCYC8 tCCLR,tCCLW tCCHR,tCCHW tDS8 tACC8 tOH8 tDH8 /CS WR,RD A0 D0 to D7 (Write) D0 to D7 (Read) Fig 24. (VDD = 3.3V , Ta =-30~85°C) Rating Item Signal Symbol Condition Min. Max. Units Address hold time tAH8 10 — Address setup time tAW8 0 — System cycle time A0 tCYC8 240 — Enable L pulse width (WRITE) tCCLW 80 — Enable H pulse width (WRITE) WR tCCHW 80 — Enable L pulse width (READ) tCCLR 140 — Enable H pulse width (READ) RD tCCHR 80 WRITE Data setup time tDS8 40 — WRITE Address hold time tDH8 0 — READ access time tACC8 CL = 100 pF — 70 READ Output disable time D0 to D7 tOH8 CL = 100 pF 5 50 ns |
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