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ENC28J60-C/SP 数据表(PDF) 84 Page - Microchip Technology |
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ENC28J60-C/SP 数据表(HTML) 84 Page - Microchip Technology |
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84 / 96 page ![]() ENC28J60 DS39662B-page 82 Preliminary © 2006 Microchip Technology Inc. FIGURE 16-1: SPI INPUT TIMING FIGURE 16-2: SPI OUTPUT TIMING TABLE 16-6: SPI INTERFACE AC CHARACTERISTICS Param. No. Sym Characteristic Min Max Units Conditions FSCK Clock Frequency DC 20 MHz 1TCSS CS Setup Time 50 — ns 2TCSH CS Hold Time 10 — ns ETH registers and memory buffer 210 — ns MAC and MII registers 3TCSD CS Disable Time 50 — ns 4TSU Data Setup Time 10 — ns 5THD Data Hold Time 10 — ns 6TV Output Valid from Clock Low — 10 ns SO Load = 30 pF 7TDIS Output Disable Time — 10 ns SO Load = 30 pF TCSS CS SCK SI SO TSU THD 1/FSCK MSb In LSb In High-Impedance TCSH TCSD CS SCK SI SO 1/FSCK LSb In Don’t Care MSb Out TV TV LSb Out TDIS |
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