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MPD784036 Datasheet(PDF) 63 Page - NEC |
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MPD784036 Datasheet(HTML) 63 Page - NEC |
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63 / 90 page ![]() µPD784031 63 AC CHARACTERISTICS (TA = -40 to +85 °C, VDD = AVDD = +2.7 to 5.5 V, VSS = AVSS = 0 V) (1) Read/write operation (1/2) Remarks T: TCYK (system clock cycle time) a: 1 (during address wait), otherwise, 0 n: Number of wait states (n ≥ 0) Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Parameter Address setup time ASTB high-level width Address hold time (to ASTB ↓) Address hold time (to RD ↑) Delay from address to RD ↓ Address float time (to RD ↓) Delay from address to data input Delay from ASTB ↓ to data input Delay from RD ↓ to data input Delay from ASTB ↓ to RD↓ Data hold time (to RD ↑) Delay from RD ↑ to address active Delay from RD ↑ to ASTB↑ RD low-level width Address hold time (to WR ↑) Delay from address to WR ↓ Delay from ASTB ↓ to data output Delay from WR ↓ to data output Delay from ASTB ↓ to WR↓ Symbol tSAST tWSTH tHSTLA tHRA tDAR tFRA tDAID tDSTID tDRID tDSTR tHRID tDRA tDRST tWRL tHWA tDAW tDSTOD tDWOD tDSTW MIN. (0.5 + a) T - 15 (0.5 + a) T - 31 (0.5 + a) T - 17 (0.5 + a) T - 40 0.5T - 24 0.5T - 34 0.5T - 14 (1 + a) T - 9 (1 + a) T - 15 0.5T - 9 0 0.5T - 8 0.5T - 12 1.5T - 8 1.5T - 12 0.5T - 17 (1.5 + n) T - 30 (1.5 + n) T - 40 0.5T - 14 (1 + a) T - 5 (1 + a) T - 15 0.5T - 9 MAX. 0 (2.5 + a + n) T - 37 (2.5 + a + n) T - 52 (2 + n) T - 40 (2 + n) T - 60 (1.5 + n) T - 50 (1.5 + n) T - 70 0.5T + 19 0.5T + 35 0.5T - 11 After program is read After data is read Conditions VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % VDD = +5.0 V ± 10 % |
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