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AT83C5136-RDTUL 数据表(PDF) 154 Page - ATMEL Corporation |
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AT83C5136-RDTUL 数据表(HTML) 154 Page - ATMEL Corporation |
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154 / 171 page ![]() 154 AT83C5134/35/36 7683B–USB–03/07 Shift Register Timing Waveform External Clock Drive Characteristics (XTAL1) Table 114. AC Parameters External Clock Drive Waveforms AC Testing Input/Output Waveforms AC inputs during testing are driven at VCC - 0.5 for a logic “1” and 0.45V for a logic “0”. Timing measurement are made at VIH min for a logic “1” and VIL max for a logic “0”. Float Waveforms VALID VALID VALID VALID VALID VALID INPUT DATA VALID 0 1 2 3 4 5 6 8 7 ALE CLOCK OUTPUT DATA WRITE to SBUF CLEAR RI T XLXL T QVXH T XHQX TXHDV T XHDX SET TI SET RI INSTRUCTION 0 1 2 3 4 5 6 7 VALID Symbol Parameter Min Max Units T CLCL Oscillator Period 21 ns T CHCX High Time 5 ns T CLCX Low Time 5 ns T CLCH Rise Time 5 ns T CHCL Fall Time 5 ns T CHCX/TCLCX Cyclic ratio in X2 mode 40 60 % VCC-0.5V 0.45V 0.7V CC 0.2VCC-0.1 T CHCL T CLCX T CLCL T CLCH T CHCX INPUT/OUTPUT 0.2 V CC + 0.9 0.2 VCC - 0.1 V CC -0.5V 0.45V FLOAT V OH - 0.1 V V OL + 0.1 V V LOAD V LOAD + 0.1 V V LOAD - 0.1 V |
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