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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST10F280 датащи(PDF) 179 Page - STMicroelectronics |
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ST10F280 датащи(HTML) 179 Page - STMicroelectronics |
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179 / 186 page  ST10F280 179/186 20.4.13 - External Bus Arbitration VDD = 5V ± 10%, VSS = 0V, TA = -40 to +125°C, CL = 50pF Note: 1. Partially tested, guaranteed by design characterization. Notes: 1. The ST10F280 will complete the currently running bus cycle before granting bus access. 2. This is the first possibility for BREQ to become active. 3. The CS outputs will be resistive high (pull-up) after t64. Symbol Parameter Maximum CPU Clock = 40MHz Variable CPU Clock 1/2 TCL = 1 to 40MHz Minimum Maximum Minimum Maximum t61 SR HOLD input setup time to CLKOUT 15 – 15 – ns t62 CC CLKOUT to HLDA high or BREQ low delay – 12.5 – 12.5 ns t63 CC CLKOUT to HLDA low or BREQ high delay – 12.5 – 12.5 ns t64 CC CSx release 1 – 15 – 15 ns t65 CC CSx drive -4 15 -4 15 ns t66 CC Other signals release 1 – 15 – 15 ns t67 CC Other signals drive -4 15 -4 15 ns Figure 89 : External Bus Arbitration, Releasing the Bus t61 t63 t66 1) t64 1) 2) t62 3) CLKOUT HOLD HLDA BREQ Others CSx (P6.x) |
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