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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MC44CC373CAS датащи(PDF) 13 Page - Freescale Semiconductor, Inc |
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MC44CC373CAS датащи(HTML) 13 Page - Freescale Semiconductor, Inc |
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13 / 28 page  Digital Home Freescale Semiconductor 13 MC44CC373 INTER-IC (I2C) INTERFACE TIMING Figure 5. I2C Timing Diagram Table 12. I2C Interface Bus Specifications Parameter Symbol Min. Max. Units Low Level Output Voltage VOL 0 0.4 V High Level Input Voltage VIH 0.7VCC VCCmax+0.5 V Low Level Input Voltage VIL −0.5 0.3 VCC V Absolute Max Input Voltage — — 5.5 V Hysteresis of Schmitt trigger inputs Vhys 0.05VCC — V Capacitance for each I/O pin(1) 1. Cb = total capacitance of one bus line in pF. CIN — 10 pF Pulse width of spikes filtered out tSP 0 50 nS SCL Frequency fSCLK 0 800 kHz Hold time Start condition tHD;STA 500 — nS Set-up time for repeated start tSU;STA 500 — nS Data Set-up time tSU;DAT 100 — nS Data Hold time tHD;DAT 0 — nS Set-up time for Stop condition tSU;STO 500 — nS Low period of the SCL clock tLOW 0.6 — uS High period of the SCL clock tHIGH 0.6 — uS Rise time of both SDA and SCL tr 20+ 0.1Cb 300 nS Fall time of both SDA and SCL tf 20+ 0.1Cb 300 nS Bus free time between Stop and Start tBUF 200 — nS SDA Sample SCL tHD;STA tf tr tLOW tHIGH AD7 AD1 R15 R8 0 R7 R0 R15 R8 R7 tBUF Byte 2 IC Address R/W Byte 1 Additional Control Bytes S P S tSU;DAT tHD;DAT tSU;STO Stop Condition Start Condition MSB LSB Master Writes to Slave Input SDA SCL tSP AD7 AD1 D7 D6 1 D4 D3 D1 D0 Master Not Ack Status Byte IC Address R/W S P Stop Condition Start Condition MSB LSB Master Reads from Slave Slave Ack Slave Ack Slave Ack Slave Ack Slave Ack D5 D2 |
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