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T89C51RD2-RDTIL Datasheet(PDF) 92 Page - ATMEL Corporation |
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T89C51RD2-RDTIL Datasheet(HTML) 92 Page - ATMEL Corporation |
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92 / 104 page ![]() 92 T89C51RD2 4243G–8051–05/03 Flash EEPROM Programming and Verification Waveforms External Clock Drive Characteristics (XTAL1) External Clock Drive Waveforms AC Testing Input/Output Waveforms T EHAZ ALE/PROG T AVGL T DVGL P0 P1.0-P1.7 P2.0-P2.4 P3.4-P3.5 CONTROL SIGNALS (ENABLE) ADDRESS DATA IN T GHAX T GHDX T GLGH ADDRESS DATA OUT T AVQV TELQV T EHQZ PROGRAMMING VERIFICATION Table 54. AC Parameters 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 5ns T CHCL Fall Time 5ns T CHCX/TCLCX Cyclic ratio in X2 mode 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 V CC + 0.9 0.2 V CC - 0.1 V CC -0.5 V 0.45 V |
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