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Z86C34 датащи(PDF) 14 Page - Zilog, Inc. |
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Z86C34 датащи(HTML) 14 Page - Zilog, Inc. |
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14 / 70 page ![]() Z86C34/C35/C36/C44/C45/C46 CMOS Z8® MCUs with ASCI UART ZiLOG 14 P R E L I M I N A R Y DS007601-Z8X0499 AC ELECTRICAL CHARACTERISTICS (Continued) Table 6. External I/O or Memory READ and WRITE Timing (C44/C45/C46 Only) (SCLK/TCLK = XTAL/2) TA = –0ºC to 70ºC TA = –40ºC to +105ºC 12 MHz 16 MHz 12 MHz 16 MHz No Symbol Parameter VCC 1 Min Max Min Max Min Max Min Max Units Notes 1 TdA(AS) Address Valid to AS Rise Delay 3.0 35 25 35 25 ns 2 5.5 35 25 35 25 ns 2 2 TdAS(A) AS Rise to Address Float Delay 3.0 45 35 45 35 ns 2 5.5 45 35 45 35 ns 2 3 TdAS(DR) AS Rise to Read Data Req’d Valid 3.0 250 180 250 180 ns 2,3 5.5 250 180 250 180 ns 2 4TwAS AS Low Width 3.0 55 40 55 40 ns 2 5.5 55 40 55 40 ns 2 5 TdAS(DS) Address Float to DS Fall 3.0 0000 ns 5.5 0000 ns 6 TwDSR DS (Read) Low Width 3.0 200 135 200 135 ns 2,3 5.5 200 135 200 135 ns 2,3 7 TwDSW DS (WRITE) Low Width 3.0 110 80 110 80 ns 2,3 5.5 110 80 110 80 ns 2,3 8 TdDSR(DR) DS Fall to Read Data Req’d Valid 3.0 150 75 150 75 ns 2,3 5.5 150 75 150 75 ns 2,3 9 ThDR(DS) Read Data to DS Rise Hold Time 3.0 0000 ns 2 5.5 0000 ns 2 10 TdDS(A) DS Rise to Address Active Delay 3.0 45 50 45 50 ns 2 5.5 55 50 55 50 ns 2 11 TdDS(AS) DS Rise to AS Fall Delay 3.0 30 35 30 35 ns 2 5.5 45 35 45 55 ns 2 12 TdR/W(AS) R/W Valid to AS Rise Delay 3.0 45 25 45 25 ns 2 5.5 45 25 45 25 ns 2 13 TdDS(R/W) DS Rise to R/W Not Valid 3.0 45 35 45 35 ns 2 5.5 45 35 45 35 ns 2 14 TdDW(DSW) WRITE Data Valid to DS Fall (WRITE) Delay 3.0 55 25 55 25 ns 2 5.5 55 25 55 25 ns 2 15 TdDS(DW) DS Rise to WRITE Data Not Valid Delay 3.0 45 35 45 35 ns 2 5.5 45 35 45 35 ns 2 16 TdA(DR) Address Valid to Read Data Req’d Valid 3.0 310 230 310 230 ns 2,3 5.5 310 230 310 230 ns 2,3 Notes: 1. The VCC voltage specification of 3.0V guarantees 3.3V ± 0.3V, and the VCC voltage specification of 5.5V guarantees 5.0V ± 0.5V. 2. Timing numbers provided are for minimum TpC. 3. When using extended memory timing add 2 TpC. |
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