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CDP1806ACE Datasheet(PDF) 6 Page - Intersil Corporation |
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CDP1806ACE Datasheet(HTML) 6 Page - Intersil Corporation |
6 / 30 page 6 Minimum Set-Up And Hold Times (Note 2) Data Bus Input Set-Up, tSU -100 0 ns Data Bus Input Hold, tH 125 225 ns DMA Set-Up, tSU -75 0 ns DMA Hold, tH 100 175 ns ME Set-Up, t SU 125 320 ns ME Hold, tH 050 ns Interrupt Set-Up, tSU -100 0 ns Interrupt Hold, tH 100 175 ns WAIT Set-Up, tSU 20 50 ns EF1-4 Set-Up, tSU -125 0 ns EF1 -4 Hold, tH 175 300 ns Minimum Pulse Width Times (Note 6) CLEAR Pulse Width, tWL 100 175 ns CLOCK Pulse Width, tW 75 100 ns NOTES: 5. Typical values are for TA = 25 o C and nominal V DD. 6. Maximum limits of minimum characteristics are the values above which all devices function. Timing Specifications as a function of T (T = 1/fCLOCK) at TA = -40 to +85oC, VDD = 5V, ±15% PARAMETER CDP1805AC, CDP1806AC UNITS TYP (NOTE 7) MAX High-Order Memory-Address Byte Set-Up to TPA Time, tSU 2T-275 2T -175 ns MRD to TPA Time, tSU T/2 -100 T/2 -75 ns High-Order Memory-Address Byte Hold after TPA Time, tH T/2 +75 T/2 +100 ns Low-Order Memory-Address Byte Hold after WR Time, tH T +180 T +240 ns CPU Data to Bus Hold after WR Time, tH T +110 T +150 ns Required Memory Access Time, tACC Address to Data 4.5T -440 4.5T -330 ns NOTE: 7. Typical values are for TA = +25 oC and nominal V DD. Dynamic Electrical Specifications at TA = -40o to +85oC; C L = 50pF; Input tR, tF = 10ns; Input Pulse Levels = 0.1V to VDD -0.1V; VDD = 5V, ±5%. (Continued) PARAMETER CDP1805AC CDP1806AC UNITS (NOTE 5) TYP MAX CDP1805AC, CDP1806AC |
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