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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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33989 датащи(PDF) 12 Page - Freescale Semiconductor, Inc |
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33989 датащи(HTML) 12 Page - Freescale Semiconductor, Inc |
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12 / 66 page  Analog Integrated Circuit Device Data 12 Freescale Semiconductor 33989 ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 4. Dynamic Electrical Characteristics Characteristics noted under conditions 7.0 V ≤ V SUP ≤ 18 V, - 40°C ≤ T A ≤ 125°C, GND = 0 V unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted. Characteristic Symbol Min Typ Max Unit DIGITAL INTERFACE TIMING (SCLK, CS, MOSI, MISO) SPI Operation Frequency FREQ 0.25 — 4.0 MHz SCLK Clock Period tPCLK 250 — N/A ns SCLK Clock High Time tWSCLKH 125 — N/A ns SCLK Clock Low Time tWSCLKH 125 — N/A ns Falling Edge of CS to Rising Edge of SCLK tLEAD 100 — N/A ns Falling Edge of SCLK to Rising Edge of CS tLAG 100 — N/A ns MOSI to Falling Edge of SCLK tSISU 40 — N/A ns Falling Edge of SCLK to MOSI tSIH 40 — N/A ns MISO Rise Time (CL = 220 pF) tRSO — 25 50 ns MISO Fall Time (CL = 220 pF) tFSO — 25 50 ns Time from Falling or Rising Edges of CS to: MISO Low Impedance MISO High Impedance tSOEN tSODIS — — — — 50 50 ns Time from Rising Edge of SCLK to MISO Data Valid 0.2 V1 = <MISO> = 0.8 V1, CL = 200 pF tVALID — — 50 ns STATE MACHINE TIMING (CS, SCLK, MOSI, MISO, WD, INT) Delay Between CS Low to High Transition (End of SPI Stop Command) and Stop Mode Activation Detected by V2 OFF (24) tCSSTOP 18 — 34 µs Interrupt Low Level Duration SBC in Stop Mode tINT 7.0 10 13 µs Internal Oscillator Frequency All Modes Except Sleep and Stop (24) OSCF1 — 100 — kHz Internal Low Power Oscillator Frequency Sleep and Stop Modes (24) OSCF2 — 100 — kHz Watchdog Period 1 Normal and Standby Modes WD1 8.58 9.75 10.92 ms Watchdog Period 2 Normal and Standby Modes WD2 39.6 45 50.4 ms Watchdog Period 3 Normal and Standby Modes WD3 88 100 112 ms Watchdog Period 4 Normal and Standby Modes WD4 308 350 392 ms Watchdog Period Accuracy Normal and Standby Modes f1ACC -12 — 12 % Notes 24. Guaranteed by design; however it is not production tested. |
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