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MSM80C49 Datasheet(PDF) 10 Page - OKI electronic componets |
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MSM80C49 Datasheet(HTML) 10 Page - OKI electronic componets |
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10 / 20 page  10/20 ¡ Semiconductor MSM80C48/49/50, MSM80C35/39/40 AC Characteristics Parameter Symbol VCC=5 V±10% 11 MHz Clock Variable clock 0 to 11 MHz Unit Min. Max. Min. Max. ALE Pulse Width tLL 150 — 3.5t–170 — ns Address Setup Time (up to ALE) tAL 70 — 2t–110 — ns Address Hold Time (from ALE) tLA 50 — t–40 — ns Bus Port Latch Data Setup Time (up to ALE Rising Edge) tBL 110 — 2.5t –115 — ns Bus Port Latch Data Hold Time (from ALE Rising Edge) tLB 90 — 1.5 t–45 — ns Control Pulse Width (RD, WR) tCC1 480 — 7t–155 — ns Data Setup Time (before WR) tDW 390 — 6t–155 — ns Data Hold after Time (after WR) tWD 40 — 2t–140 — ns Data Hold Time (after RD, PSEN) tDR 0 110 0 1.5t–30 ns PSEN to Data-in tRD2 — 190 — 5t–265 ns Address Setup to WR tAW 300 — 6t–245 — ns Address Setup to Data-in tAD1 — 730 — 12t–360 ns Address Float to PSEN tAFC2 10 — 10 — ns PROG to Input Data Valid tPR — 650 — 9t–170 ns Input Data Hold Time tPF 0 140 0 1.5t ns Output Data Setup Time tDP 250 — 6t–290 — ns Output Data Hold Time tPD 40 — 3t–230 — ns PROG Pulse Width tPP 700 — 10t–210 — ns Port 2 I/O Setup Time tPL 160 — 4.5–250 — ns Port 2 I/O Hold Time tLP 15 — 1.5t–120 — ns (VCC=2.5V to 6V (*1), Ta=–40 to +85°C) Control Pulse Width (PSEN) tCC2 350 — 6t–200 — ns RD to Data-in tRD1 — 350 — 5t–265 ns Address Setup to Instruction tAD2 — 460 — 8t–265 ns Address Float to RD, WR tAFC1 140 — 2t–40 — ns Port Control Setup Time (up to PROG Falling Edge) tCP 50 — 2t–130 — ns Control Pulse Setup Time from ALE (PSEN) tLAFC2 60 — t–30 — ns Control Pulse Setup Time from ALE (RD, WR) tLAFC1 200 — 3t–75 — ns Control Pulse up to ALE (RD, WR, PROG) tCA1 50 — 1.5t–85 — ns Control Pulse up to ALE (PSEN) tCA2 320 — 4.5t–90 — ns Port Control Hold Time (from PROG Falling Edge) tPC 100 — 4t–260 — ns Port Output Data (from ALE) tPV — 510 — 4t+145 ns T0 Cycle tOPRR 270 — 3t — ns Instruction Execution Time tCY 1.36 — 15t — ms Note : Control output : CL=80pF Bus output : CL=150pF [for 20 pF (tAL, tAFC1, tAFC2)] *1 Minimum operating voltage is dependent on frequency. |
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