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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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P89LPC930FDH датащи(PDF) 48 Page - NXP Semiconductors |
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P89LPC930FDH датащи(HTML) 48 Page - NXP Semiconductors |
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48 / 55 page  Philips Semiconductors P89LPC930/931 8-bit microcontrollers with two-clock 80C51 core Product data Rev. 05 — 15 December 2004 48 of 55 9397 750 14472 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. [1] Parameters are valid over operating temperature range unless otherwise specified. Parts are tested to 2 MHz, but are guaranteed to operate down to 0 Hz. [2] When using an oscillator frequency above 12 MHz, the reset input function of P1.5 must be enabled. An external circuit is required to hold the device in reset at power-up until VDD has reached its specified level. When system power is removed VDD will fall below the minimum specified operating voltage. When using an oscillator frequency above 12 MHz, in some applications, an external brownout detect circuit may be required to hold the device in reset when VDD falls below the minimum specified operating voltage. tSPIF Fall time see Figures 15, 16, 17, 18 SPI outputs (SPICLK, MOSI, MISO) - 100 - 100 ns SPI inputs (SPICLK, MOSI, MISO, SS) - 2000 - 2000 ns Table 9: AC characteristics…continued VDD = 3.0 V to 3.6 V, unless otherwise specified. Tamb = −40 °Cto+85 °C for industrial, unless otherwise specified.[1] Symbol Parameter Conditions Variable clock fosc =18MHz Unit Min Max Min Max Fig 15. SPI master timing (CPHA = 0). tCLCL tSPICLKH tSPICLKL Master LSB/MSB out Master MSB/LSB out tSPIDH tSPIDSU tSPICLKL tSPICLKH tSPIF tSPIOH tSPIDV tSPIR tSPIDV tSPIF tSPIF tSPIR tSPIR SS SPICLK (CPOL = 0) (output) 002aaa156 SPICLK (CPOL = 1) (output) MISO (input) MOSI (output) LSB/MSB in MSB/LSB in |
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