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ST10F269ZX датащи(PDF) 169 Page - STMicroelectronics |
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ST10F269ZX датащи(HTML) 169 Page - STMicroelectronics |
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169 / 184 page ![]() ST10F269 169/184 VDD = 5V ± 10%, VSS = 0V, TA = -40 to + 125°C, CL = 50pF, TQFP144 devices Notes: 1. These timings are given for test purposes only, in order to assure recognition at a specific clock edge. Note 2. Demultiplexed bus is the worst case. For multiplexed bus 2TCL are to be added to the maximum values. This adds even more time for deactivating READY. The 2tA and tC refer to the next following bus cycle, tF refers to the current bus cycle. Table 51 : CLKOUT and READY Characteristics (TQFP144 devices) Symbol Parameter Maximum CPU Clock = 32MHz Variable CPU Clock 1/2TCL = 1 to 32MHz Minimum Maximum Minimum Maximum t29 CC CLKOUT cycle time 31.25 31.25 2TCL 2TCL ns t30 CC CLKOUT high time 9.625 – TCL – 6 – ns t31 CC CLKOUT low time 5.625 – TCL – 10 – ns t32 CC CLKOUT rise time – 4 – 4 ns t33 CC CLKOUT fall time – 4 – 4 ns t34 CC CLKOUT rising edge to ALE falling edge -3 + tA +7 + tA -3 + tA +7 + tA ns t35 SR Synchronous READY setup time to CLKOUT 14 – 14 – ns t36 SR Synchronous READY hold time after CLKOUT 4– 4 – ns t37 SR Asynchronous READY low time 45.25 – 2TCL + 14 – ns t58 SR Asynchronous READY setup time 1) 14 – 14 – ns t59 SR Asynchronous READY hold time 1) 4– 4 – ns t60 SR Async. READY hold time after RD, WR high (Demultiplexed Bus) 2) 00 + 2tA + tC + tF 2 0 TCL - 15.625 + 2tA + tC + tF 2 ns |
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