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MSM66577 데이터시트(PDF) 14 Page - OKI electronic componets |
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MSM66577 데이터시트(HTML) 14 Page - OKI electronic componets |
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14 / 34 page ![]() PEDL66577-01 1Semiconductor MSM66577 Family 14/34 AC Characteristics 1 (V DD = 4.5 to 5.5 V) (1) Separate Bus Type External program memory control (V DD = 4.5 to 5.5 V, Ta = –30 to +70°C) Parameter Symbol Condition Min. Max. Unit Cycle time t cyc f OSC = 30 MHz 33.3 — Clock pulse width (HIGH level) tφWH 13 — Clock pulse width (LOW level) tφWL 13 — PSEN pulse width t PW 2 t φ – 15 — PSEN pulse delay time t PD —45 Address setup time t AS t φ – 25 — Address hold time t AH 0— Instruction setup time t IS 25 — Instruction hold time t IH 0— Read data access time t ACC C L = 50 pF —3 t φ – 65 ns Note: t φ = t cyc/2 INST0 to 7 PC0 to 19 Bus timing during no wait cycle time t cyc tφ WH CPUCLK PSEN A0 to A19 D0 to D7 tφ WL t PD t PW t AS t ACC t IS t IH t AH |
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