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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DSPIC30F3012AT20E/ML датащи(PDF) 176 Page - Microchip Technology |
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DSPIC30F3012AT20E/ML датащи(HTML) 176 Page - Microchip Technology |
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176 / 205 page  dsPIC30F2011/2012/3012/3013 DS70139E-page 174 © 2006 Microchip Technology Inc. I TABLE 20-33: I2C™ BUS DATA TIMING REQUIREMENTS (MASTER MODE) AC CHARACTERISTICS Standard Operating Conditions: 2.5V to 5.5V (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +85°C for Industrial -40°C ≤ TA ≤ +125°C for Extended Param No. Symbol Characteristic Min(1) Max Units Conditions IM10 TLO:SCL Clock Low Time 100 kHz mode TCY/2 (BRG + 1) — μs— 400 kHz mode TCY/2 (BRG + 1) — μs— 1 MHz mode(2) TCY/2 (BRG + 1) — μs— IM11 THI:SCL Clock High Time 100 kHz mode TCY/2 (BRG + 1) — μs— 400 kHz mode TCY/2 (BRG + 1) — μs— 1 MHz mode(2) TCY/2 (BRG + 1) — μs— IM20 TF:SCL SDA and SCL Fall Time 100 kHz mode — 300 ns CB is specified to be from 10 to 400 pF 400 kHz mode 20 + 0.1 CB 300 ns 1 MHz mode(2) — 100 ns IM21 TR:SCL SDA and SCL Rise Time 100 kHz mode — 1000 ns CB is specified to be from 10 to 400 pF 400 kHz mode 20 + 0.1 CB 300 ns 1 MHz mode(2) — 300 ns IM25 TSU:DAT Data Input Setup Time 100 kHz mode 250 — ns — 400 kHz mode 100 — ns 1 MHz mode(2) TBD — ns IM26 THD:DAT Data Input Hold Time 100 kHz mode 0 — ns — 400 kHz mode 0 0.9 μs 1 MHz mode(2) TBD — ns IM30 TSU:STA Start Condition Setup Time 100 kHz mode TCY/2 (BRG + 1) — μs Only relevant for Repeated Start condition 400 kHz mode TCY/2 (BRG + 1) — μs 1 MHz mode(2) TCY/2 (BRG + 1) — μs IM31 THD:STA Start Condition Hold Time 100 kHz mode TCY/2 (BRG + 1) — μs After this period the first clock pulse is generated 400 kHz mode TCY/2 (BRG + 1) — μs 1 MHz mode(2) TCY/2 (BRG + 1) — μs IM33 TSU:STO Stop Condition Setup Time 100 kHz mode TCY/2 (BRG + 1) — μs— 400 kHz mode TCY/2 (BRG + 1) — μs 1 MHz mode(2) TCY/2 (BRG + 1) — μs IM34 THD:STO Stop Condition 100 kHz mode TCY/2 (BRG + 1) — ns — Hold Time 400 kHz mode TCY/2 (BRG + 1) — ns 1 MHz mode(2) TCY/2 (BRG + 1) — ns IM40 TAA:SCL Output Valid From Clock 100 kHz mode — 3500 ns — 400 kHz mode — 1000 ns — 1 MHz mode(2) —— ns — IM45 TBF:SDA Bus Free Time 100 kHz mode 4.7 — μs Time the bus must be free before a new transmission can start 400 kHz mode 1.3 — μs 1 MHz mode(2) TBD — μs IM50 CB Bus Capacitive Loading — 400 pF Note 1: BRG is the value of the I2C Baud Rate Generator. Refer to Section 21 “Inter-Integrated Circuit™ (I2C)” in the “dsPIC30F Family Reference Manual” (DS70046). 2: Maximum pin capacitance = 10 pF for all I2C™ pins (for 1 MHz mode only). |
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