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Z86L7208FSC датащи(PDF) 15 Page - Zilog, Inc. |
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Z86L7208FSC датащи(HTML) 15 Page - Zilog, Inc. |
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15 / 71 page ![]() Z86C72/C92/L72/L92 Zilog IR Microcontroller DS97LVO0900 P R E L I M I N A R Y 6-15 1 AC CHARACTERISTICS (Z86C72/C92 SPECIFICATIONS) Preliminary External I/O or Memory Read and Write Timing Table TA = 0°C to +70°C 16.0 MHz No Symbol Parameter VCC Min Max Units Notes 1 TdA(AS) Address Valid to /AS Rising Delay 4.5V 5.5V 25 25 ns ns 2 2 TdAS(A) /AS Rising to Address Float Delay 4.5V 5.5V 35 35 ns ns 2 3 TdAS(DR) /AS Rising to Read Data Required Valid 4.5V 5.5V 180 180 ns ns 1,2 4 TwAS /AS Low Width 4.5V 5.5V 40 40 ns ns 2 5 Td Address Float to /DS Falling 4.5V 5.5V 0 0 ns ns 6 TwDSR /DS (Read) Low Width 4.5V 5.5V 135 135 ns ns 1,2 7 TwDSW /DS (Write) Low Width 4.5V 5.5V 80 80 ns ns 1,2 8 TdDSR(DR) /DS Falling to Read Data Required Valid 4.5V 5.5V 75 75 ns ns 1,2 9 ThDR(DS) Read Data to /DS Rising Hold Time 4.5V 5.5V 0 0 ns ns 2 10 TdDS(A) /DS Rising to Address Active Delay 4.5V 5.5V 50 50 ns ns 2 11 TdDS(AS) /DS Rising to /AS 4.5V 5.5V 35 35 ns ns 2 12 TdR/W(AS) R//W Valid to /AS Rising Delay 4.5V 5.5V 25 25 ns ns 2 13 TdDS(R/W) /DS Rising to R//W Not Valid 4.5V 5.5V 35 35 ns ns 2 14 TdDW(DSW) Write Data Valid to /DS Falling (Write) Delay 4.5V 5.5V 25 25 ns ns 2 15 TdDS(DW) /DS Rising to Write Data Not Valid Delay 4.5V 5.5V 35 35 ns ns 2 16 TdA(DR) Address Valid to Read Data Required Valid 4.5V 5.5V 230 230 ns ns 1,2 17 TdAS(DS) /AS Rising to /DS Falling Delay 4.5V 5.5V 45 45 ns ns 2 18 TdM(AS) /DM Valid to /AS Falling Delay 4.5V 5.5V 30 30 ns ns 2 19 TdDS(DM) /DS Rise to /DM Valid Delay 4.5V 5.5V 70 70 ns ns 20 ThDS(A) /DS Rise to Address Valid Hold Time 4.5V 5.5V 70 70 ns ns Notes: 1. When using extended memory timing add 2 TpC. 2. Timing numbers given are for minimum TpC. Standard Test Load All timing references use 0.9 VCC for a logic 1 and 0.1 VCC for a logic 0. |
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