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MC44BC373C 数据表(PDF) 21 Page - Freescale Semiconductor, Inc |
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MC44BC373C 数据表(HTML) 21 Page - Freescale Semiconductor, Inc |
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21 / 30 page ![]() High Speed I2C Compatible Bus MC44BC373C/374C Technical Data 14 High Speed I2C Compatible Bus 14.1 Specification Conditions Unless otherwise specified, Vcc1 =5.0V, TA =25oC. 14.2 Timings Definition Electrical Characteristics Min Typ Max Unit Type SDA / SCL output current at 0V —— 10 µAA SDA / SCL low input level —— 1.5 V B SDA / SCL high input level 3.0 —— VB SDA/SCL input current for input level from 0.4V to 0.3Vcc –5 — 5 µAC SDA/SCL input level 0 — Vcc+0,3 V D SDA/SCL capacitance —— 10 pF C ACK low output level (sinking 3mA) — 0,3 1 V A ACK low output level (sinking 15mA) —— 1.5 V C Timing Characteristics Min Typ Max Unit Type Bus clock frequency 0 — 800 kHz C Bus free time between stop and start 200 —— ns C Setup time for start condition 500 —— ns C Hold time for start condition 500 —— ns C Data setup time 0 —— ns C Data hold time 0 —— ns C Setup time for stop condition 500 —— ns C Hold time for stop condition 500 —— ns C Acknowledge propagation delay —— 300 ns C SDA fall time at 3ma sink I and 130pF load —— 50 ns C SDA fall time at 3ma sink I and 400pF load —— 80 ns C SDA rise time SCL fall/rise time — — — — 300 300 ns ns C C Pulse width of spikes suppressed by the input filter —— 50 ns C Tbuf SSDA ... ... ACK Thd;dat Tsu;dat Tsu;sto Thd;sta Tack:low Start Stop SSCL SCL SDA Tsu;sta Chip Address SCL SDA Thd;sto Start Stop Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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