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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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MB90437LPF Scheda tecnica(PDF) 44 Page - Cypress Semiconductor |
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MB90437LPF Scheda tecnica(HTML) 44 Page - Cypress Semiconductor |
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44 / 61 page  MB90435 Series DS07-13727-2E 43 (8) Hold Timing (MB90F438L (S) /437L (S) /438L (S) : VCC = 3.5 V to 5.5 V, VSS = AVSS = 0.0 V, TA = −40 °C to +105 °C) (MB90F439 (S) /439 (S) /V540G : VCC = 5.0 V ± 10%, VSS = AVSS = 0.0 V, TA = −40 °C to +105 °C) Note : There is more than 1 cycle from the time HRQ is read to the time the HAK is changed. (9) UART0/1, Serial I/O Timing (MB90F438L (S) /437L (S) /438L (S) : VCC = 3.5 V to 5.5 V, VSS = AVSS = 0.0 V, TA = −40 °C to +105 °C) (MB90F439 (S) /439 (S) /V540G : VCC = 5.0 V ± 10%, VSS = AVSS = 0.0 V, TA = −40 °C to +105 °C) Notes : • AC characteristic in CLK synchronized mode. • CL is load capacity value of pins when testing. • For tCP (Machine clock cycle time) , refer to “ (1) Clock Timing”. Parameter Symbol Pin name Condition Value Units Remarks Min Max Pin floating →HAK↓time tXHAL HAK ⎯ 30 tCP ns HAK ↑time→Pin valid time tHAHV HAK tCP 2 tCP ns Parameter Symbol Pin name Condition Value Units Remarks Min Max Serial clock cycle time tSCYC SCK0 to SCK2 Internal clock opera- tion output pins are CL = 80 pF + 1 TTL. 8 tCP ⎯ ns SCK ↓→SOT delay time tSLOV SCK0 to SCK2, SOT0 to SOT2 −80 80 ns Valid SIN →SCK↑ tIVSH SCK0 to SCK2, SIN0 to SIN2 100 ⎯ ns SCK ↑→Valid SIN hold time tSHIX SCK0 to SCK2, SIN0 to SIN2 60 ⎯ ns Serial clock “H” pulse width tSHSL SCK0 to SCK2 External clock oper- ation output pins are CL = 80 pF + 1 TTL. 4 tCP ⎯ ns Serial clock “L” pulse width tSLSH SCK0 to SCK2 4 tCP ⎯ ns SCK ↓→SOT delay time tSLOV SCK0 to SCK2, SOT0 to SOT2 ⎯ 150 ns Valid SIN →SCK↑ tIVSH SCK0 to SCK2, SIN0 to SIN2 60 ⎯ ns SCK ↑→Valid SIN hold time tSHIX SCK0 to SCK2, SIN0 to SIN2 60 ⎯ ns HAK tXHAL tHAHV 2.4 V 0.8 V 2.4 V 2.4 V 0.8 V 0.8 V Each pin High impedance • Hold Timing |
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