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MCP4441 数据表(PDF) 13 Page - Microchip Technology |
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MCP4441 数据表(HTML) 13 Page - Microchip Technology |
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13 / 100 page  © 2010 Microchip Technology Inc. DS22265A-page 13 MCP444X/446X FIGURE 1-2: I2C Bus Start/Stop Bits Timing Waveforms. TABLE 1-2: I2C BUS START/STOP BITS REQUIREMENTS I2C AC Characteristics Standard Operating Conditions (unless otherwise specified) Operating Temperature –40 °C ≤ TA ≤ +125°C (Extended) Operating Voltage VDD range is described in AC/DC characteristics Param. No. Symbol Characteristic Min Max Units Conditions FSCL Standard Mode 0 100 kHz Cb = 400 pF, 1.8V - 5.5V Fast Mode 0 400 kHz Cb = 400 pF, 2.7V - 5.5V High-Speed 1.7 0 1.7 MHz Cb = 400 pF, 4.5V - 5.5V High-Speed 3.4 0 3.4 MHz Cb = 100 pF, 4.5V - 5.5V D102 Cb Bus capacitive loading 100 kHz mode — 400 pF 400 kHz mode — 400 pF 1.7 MHz mode — 400 pF 3.4 MHz mode — 100 pF 90 TSU:STA START condition 100 kHz mode 4700 — ns Only relevant for repeated START condition Setup time 400 kHz mode 600 — ns 1.7 MHz mode 160 — ns 3.4 MHz mode 160 — ns 91 THD:STA START condition 100 kHz mode 4000 — ns After this period the first clock pulse is generated Hold time 400 kHz mode 600 — ns 1.7 MHz mode 160 — ns 3.4 MHz mode 160 — ns 92 TSU:STO STOP condition 100 kHz mode 4000 — ns Setup time 400 kHz mode 600 — ns 1.7 MHz mode 160 — ns 3.4 MHz mode 160 — ns 93 THD:STO STOP condition 100 kHz mode 4000 — ns Hold time 400 kHz mode 600 — ns 1.7 MHz mode 160 — ns 3.4 MHz mode 160 — ns 94 THVCSU HVC to SCL Setup time 25 — uS High Voltage Commands 95 THVCHD SCL to HVC Hold time 25 — uS High Voltage Commands 91 93 SCL SDA START Condition STOP Condition 90 92 HVC/A0 VIH VIHH VIH or VIL or VIL 94 95 |
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