| 전자부품 데이터시트 검색엔진 |
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AT83SND1CXXX-ROTIL 데이터시트(PDF) 195 Page - ATMEL Corporation |
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AT83SND1CXXX-ROTIL 데이터시트(HTML) 195 Page - ATMEL Corporation |
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195 / 212 page ![]() 195 4109J–8051–10/06 AT8xC51SND1C V DD = 2.7 to 3.3 V, TA = -40 to +85°C Notes: 1. At 100 kbit/s. At other bit-rates this value is inversely proportional to the bit-rate of 100 kbit/s. 2. Determined by the external bus-line capacitance and the external bus-line pull-up resistor, this must be < 1 μs. 3. Spikes on the SDA and SCL lines with a duration of less than 3·TCLCL will be filtered out. Maxi- mum capacitance on bus-lines SDA and SCL= 400 pF. 4. TCLCL= TOSC= one oscillator clock period. 22.4.1.2 Waveforms Figure 22-17. Two Wire Waveforms Symbol Parameter INPUT Min Max OUTPUT Min Max THD; STA Start condition hold time 14·TCLCL (4) 4.0 μs(1) TLOW SCL low time 16·TCLCL (4) 4.7 μs(1) THIGH SCL high time 14·TCLCL (4) 4.0 μs(1) TRC SCL rise time 1 μs-(2) TFC SCL fall time 0.3 μs0.3 μs(3) TSU; DAT1 Data set-up time 250 ns 20·TCLCL (4)- TRD TSU; DAT2 SDA set-up time (before repeated START condition) 250 ns 1 μs(1) TSU; DAT3 SDA set-up time (before STOP condition) 250 ns 8·TCLCL (4) THD; DAT Data hold time 0 ns 8·TCLCL (4) - TFC TSU; STA Repeated START set-up time 14·TCLCL (4) 4.7 μs(1) TSU; STO STOP condition set-up time 14·TCLCL (4) 4.0 μs(1) TBUF Bus free time 14·TCLCL (4) 4.7 μs(1) TRD SDA rise time 1 μs - (2) TFD SDA fall time 0.3 μs0.3 μs(3) Tsu;DAT1 Tsu;STA Tsu;DAT2 Thd;STA T high Tlow SDA (INPUT/OUTPUT) 0.3 VDD 0.7 V DD T buf T su;STO 0.7 V DD 0.3 V DD Trd T fd T rc T fc SCL (INPUT/OUTPUT) T hd;DAT Tsu;DAT3 START or Repeated START condition START condition STOP condition Repeated START condition |
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