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T89C5115 Datasheet(PDF) 96 Page - ATMEL Corporation |
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T89C5115 Datasheet(HTML) 96 Page - ATMEL Corporation |
96 / 105 page 96 T89C5115 4128A–8051–04/02 Table 72. AC Parameters for a Variable Clock Shift Register Timing Waveforms External Clock Drive Characteristics (XTAL1) Table 73. 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”. Symbol Type Standard Clock X2 Clock X parameter for -M range Units T XLXL Min 12T 6T ns T QVHX Min 10 T -x 5 T -x 50 ns T XHQX Min 2 T - x T - x 20 ns T XHDX Min x x 0 ns T XHDV Max 10 T - x 5 T- x 133 ns VALID VALID VALID VALID VALID VALID INPUT DATA VALID 01 234 5 6 8 7 ALE CLOCK OUTPUT DATA WRITE to SBUF CLEAR RI TXLXL TQVXH TXHQX TXHDV TXHDX SET TI SET RI INSTRUCTION 012 34 567 VALID Symbol Parameter Min Max Units T CLCL Oscillator Period 25 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 ratioinX2mode 40 60 % V CC-0.5V 0.45V 0.7VCC 0.2V CC-0.1 TCHCL T CLCX T CLCL TCLCH T CHCX INPUT/OUTPUT 0.2 VCC +0.9 0.2 V CC -0.1 VCC -0.5V 0.45 V |
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